Unraid max cache drives. Be part of the solution.

Unraid max cache drives If you have an account, sign in now to post with your account. I can't think of any reason why formatting a drive or mounting a drive should be impossible in unRAID without adding it to the array. More posts you may like r/unRAID. much as cache_dirs gives perceived real world speed improvements). Followers 0. How close can I get to the max? If 70C is ok I’ll adjust unraid system warnings for that drive to increase temp. The cache pool is strictly for transfer to the array. These drives are hit with light To assign devices tothe array and/or cache, first login to the server's webGui. I've been monitoring the drive that spins up from the dashboard, it gets very few reads/writes, like less than 100 counts/day, it also triggers write to the parity drive as well. Dumped some large groups of files off and on to the cache pool for a while and was quite pleased with performance and of course lack of issues. This topic is now archived and is If I have 2 drives of different sizes, the pool will just become the size of the smaller drive yeah? How does unraid know which disk to build the array from? i've pre-cleared the drive that i will be adding just to be sure its empty. Members; 14 ata1: SATA max UDMA/133 abar m2048@0xf6d00000 port 0xf6d00100 irq 61 Sep 15 20:41:06 BIG-BOSS kernel: ahci 0000:0c:00. I do know that I’m not doing any transfers or downloads, but I had to disable Plex just to make it stop. Now replace your cache drive and power back up. JorgeB. It will work with Hikvision cameras well. I might be pulling down a 4 season TV series from usenet I'm not sure what you plan on running besides Plex, but if thats it, you'd probably be fine with 2 x 500GB cache drives, running in a RAID 1 for redundancy (If you do BTRFS, I believe it defaults to RAID 1 with 2 cache drives). There is nothing that I can see that has to be moved to the array. The cache pools are purely BTRFS RAID for multiple disks, so a RAID 0 is completely broken with no recovery if a drive fails. If you want more space the easiest thing would be to remove the second disk from the pool, add a new cache pool and add the new disk only to this 2nd pool. That same section also has a more detailed explanation of the "Use cache" options. when i had the issue from the previous post the 'missing devices' warning happened overnight with the machine running. Started to get an issue similar in scope to the issues users were having here, more specifically the issue i am having started with large writes to the cache drive started to slow down to a crawl or near stop and cause dockers and vm's to become unresponsive (the unraid ui often still works) Everything was working fine for a week or two after one of the last changes i Yeah you could do 1 cache drive with appdata and system files, then another cache drive could handle bit torrent stuff, and so on. I have a 2TB ssd Cache pool and 1TB ssd Data pool. ) You can use as many disks as you want there's no limitation for drive pools, unlike the 28+2 limit for the array. As of unRAID 6. I then added a cache drive and bingo! I have the get spin up/spin down and temp readings. I also have too many files for unRaid 5 (32bit) to cache all files, hence the motivation for my changes. What i'm trying to work out is the best cache settings to use, whilst also minimizing HDD drive-spin up, and SSD write usage too (obviously depends on the apps at play). This recently started happening to one drive. divvy it up anyway you like. My shares are set to prefer cache. Cache pools are NOT covered by the main array parity. Thanks! However, transfers to the drives is very slow (~50 MBps) even between the Win10 VM and the server itself. I will look at moving all the unRAID drives from the on-board SATA ports to the SASLP-MV8. if i set the 128GB Cache 2 drive to (no device) and i start the array the Cache 1 disk is unmountable. I was working with the server, and then I noticed that dockers were not available anymore ("Docker service failed to start"). I think it largely depends on what you use the cache for => if you use it for the traditional function of caching all the writes to your array, then I'd personally want those to be fault-tolerant from the instant I wrote them to the server, so I'd Unraid needs direct hardware access to the drives to work properly, hardware raid cards mostly emulate those functions, but you can't guarantee everything unraid tries to do directly on the drive will work 100% as unraid expects. Parity checks average between 199. Quote; Link to comment. 0 and 199. I do have a 1tb m. installable capacity 32 GB) Network: eth0: 1000Mb/s - Full Duplex. testdasi. The down side was the size was always small and the drive was prone to failure. I would not want to have less than 1. Best option for more than 30 drives is to move to a second server, or use an OS designed for large arrays. brin6thepayne. My Unassigned Devices drive wasn't coming up default because I had to re MOUNT the drive. Hopefully this serves as a record for the future. For comparison, disk to disk transfer via Krusader is ~150 MBps, Preclear/parity was ~190 MBps. x only allows for up to 25 total assignable devices between the array and the cache (1 parity, 23 data, and 1 cache device). I am trying to set up different disk temperature warning thresholds for my SSD cache drives. Reactions: TubaMT. For 1TB under $150 is tough, search for used intel DC drives, consumer drives are generally rated for well under 1 write per day paying more for the enterprise drive is cheaper in the long run. All good suggestions when SSDs were expensive smaller, and PCIe Unraid cannot pull files onto the cache dynamically for read caching like storage-tiering file systems such as ZFS or Storage Spaces. 2 is now available with multiple bug fixes, details in the release notes (search the page for '-rc. Found it. Oct 19, 2023 · The suggestion for two cache drives comes because of data protection. Then later in the process you set them to cache-prefer so mover will move from array to cache. 7 with one parity drive, 23 data drives, and one cache drive. (Granted fixable but why add the potential for a problem when it serves no purpose. So I have a slighty odd cache setup. If a share has its primary storage on a Pool (cache) and you write to /mnt/user/ShareX it goes to the Pool (instead of the Array). I had a used Samsung 850 EVO ssd that I used for cache, and I am seeing that I am having pre-failure warnings now from too much writing. ) But if the disks are new, I would throughly test them to avoid the infant mortality issue while the disk is still under warranty. T. Additional devices can still be utilized directly with other Hi, Today i merged my unassigned SSD/data back into the main pool, and now have 2x 1Tb drives in a SSD cache pool for a 3x 4Tb HDD array. Top 2% Rank by size . However, I did have a few noob questions on the use of the cache pool. When it's done put your appdata share to cache only . 8MB/s. Each additional disk is another point of failure. 3k 4,220 Posted August 13, 2017. So nice to have a cache that can max out 10gbe. Posted November 13. I have NOT tried this on UnRAID, but as long as the controllers are operating in AHCI mode, they SHOULD support hot swap -- so if, for example, you added a drive I'd expect UnRAID to "see" it without requiring a reboot. BUT with 4 different drives? If, each night, I were to image a . Kartoshka. Array shows Aug 9, 2018 · TL;DR-my cache drive failed and I lost a bunch of data. In simple terms, with a cache I write anywhere from 90-110MB/s over the network. I've tried breaking the pool, reformatting a single NVME drive as XFS and re-adding as a cache drive - Crashed Unraid Edited November 11, 2019 by dis3as3d. So it comes down to the specific use case. So for the simple minded like me: Copy the scrpt to notepad++, change the "MAX_SIZE" to 3. This way it seems about a RAID10 but spanning instead of striping (similar to unRAID data disks that are about a RAID4 but without striping too). So the max array size I can have is 30 disk with 2 parity. Note: Your post will require moderator approval before it will be visible. action My 12TB library has a 5GB data folder which resides on my unRAID cache drive. Be the solution you want to see in the world. My question is do I need a cache drive for unraid if i’m not connecting to the server from my main pc? I’m only planning on storing my media library on the server and don’t plan on transferring data from my pc to unraid. Posted March 30, 2020. As a NAS, it works wonderfully. Members; 204 Author That's a phenominal rate. I monitored the cache drive temp in Just add the second SSD to your cache pool. its definately a docker. 1. Light Mode Dark Mode. Moderators; 69. Format all unmountable disks. The drive on my Windows computer is an EVO 850 250gb ssd. Set new drive to be a cache, set all shares back to use cache: yes. I had scan users folder=false. I followed the above instructions and it seemed to work well (BTRFS copy was successful) but instead of simply unassigning the drive (and keep the slots to 2) to let unraid rebuild the cache, I changed the the slots to 1, which caused some issues. 50C is perfectly normal and I have (had) a pool of 4 cache drives on BTRFS. Currently I'm moving my HDD's over one at at time and I have a 2 SSD drives (one at 1TB, the other at 500GM, see second point below) that I set as a cache pool. Done right this would give the user access to both real and perceived speed improvements (i. Mar 11, 2022 · So if you largest data disk now is only 4 tb the parity drive also will only be used up to this point, 4Tb. Ive attached a screenshot. I downloaded Diagnostics from this point. I have (and had on unRaid 5) 16GB ram. I have set default settings for the other disks in the "Disk Settings" under the Settings tab but every time I try to set a new value for the SSD drives in the Cache Settings on the Main tab, the default settings override what I type. Posted March 12, 2010. You could do that with your two 500Gb drives, but I think that eats into your data storage too much. I believe the unassigned devices addon does exactly this - mounts and shares drives outside the array. Reply to this topic; Start new topic; Recommended Posts. However, you can build a cache with multiple drives both to increase your cache capacity as well as to add protection for that data. drops to lower speed occur, when the I have been testing the VFS settings fairly extensively for the past few months on the betas. SirSwagsalot. The mini-itx motherboard I'll be using only has only 1 m. I'm going to be adding 2 more 10TB disks. is there any way i can get details as to what is causing all the reads on Disk 6 27million currently in 48 hours. as i not video recording using it to show the issues This would be similar in nature to user shares that are currently allowed to use the cache drive but on a longer term basis maintaining array RAID protection at all times. Then set max level to 4, to get a quick test, spun down a disk, and accessed share from windows. CACHE drives were connected direct to the motherboard M. Posted September 15, 2020. 12. I then was planning on picking up a 1TB nvme ssd as the cache drive. Shut down the server, remove the drive. conf, added "options zfs zfs_arc_max=64000000000" to the file, saved and uploaded to the Any drive connected to the server counts towards this drive limit, but this is only checked on when the array is started, so if you mount your drive in unassigned devices after the array is started, you are good to go. While I don’t currently have the budget to replace Back in the day when I upgrade an array drive the old pull, that old drive I'd repurpose as a cache drive. Moderators; Stay informed about all things Unraid by signing up for our monthly newsletter. 2, that limit is increased to support up to 30 array devices (28 data and 2 parity) and up to 24 cache devices for a grand total of up to 54 assignable devices. Reply reply More replies More replies. 2 slot, and therefore I will only have one nvme drive as a cache drive. I am building an unraid server right now and I am trying to figure out how to setup my Cache Pools. Benchmarks of that drive show max read/write speeds of about 90/80 on the very outer cylinders, with an average across the drive of 71/66. I have one problem that, writing to the share and the mover job can happen at the same time, if I put a large cache drive say 500GB or 1TB into the box, and have a writing job say 2TB in the progress keeps hammering the cache drive for long time, then the mover kicks in to read, this situation could bring the . adgilcan. Now here's the problem: Hi, Today i merged my unassigned SSD/data back into the main pool, and now have 2x 1Tb drives in a SSD cache pool for a 3x 4Tb HDD array. the cache drive is pretty full - has about 70GB left. @hammondses states, that he achieves full 10gbe speed, when using a ram-disk on unRAIDs side as destination for the writes. One of the NVMe devices is dropping offline, hardware problem Quote; Thanks for linking to this from the movertuning page. 1). What am I missing? I've been running Unraid for a handful of months now, and I can't for the life of me figure out why it is that my cache drives randomly go offline/unresponsive after a period of time. GaryMaster. no restart or shutdown. other than having the vm drive stored on the cache drives, do cache drives help for plex or downloading files? Also can the cache drives be m. Always pick the largest storage device available to act as yourparity device(s). Is reverting to 1 cache drive possible and if so can i have a step by step guide on the safest way to do this. If you can't see my sig, go to the upper right of this Join the conversation. The 2 that are showing errors are the cache drives 1 and 2 if that matters at all. For UnRaid array I rebooted and when the system came back up I only see one cache drive now and there is a BTRFS operation Jump to content. I have since added an apps cache only folder and plugins live on the cache drive. unRAID 6. At this point, I see no reason to get anything less than 500gb anymore as the cost difference between 500gb and Jul 16, 2018 · These drives were split across two servers so my assumption is that this was set on the drives themselves at some point and that this has nothing to do with unRAID. Since then, approximately every 2 days the dockers and VMs lock up and trying to write to the cache drive returns a message that the file system is read only. , but will generally be slower than write to a single disk. Click onthe Maintab and select the devices to assign to slots for parity,data, and cache disks. Kernel: Linux 4. i have moved all I stopped the array and the cache disappeared again, but on a full shutdown and then starting back up it re-appeared and i got this it auto-mounted and was correctly assigned again. space, whenever it gets real close to max run a balance like before, you can use a higher -dusage value to reclaim more unused Disk layout is dual parity (3+4TB drive), three (xfs) data drives (3TB each) and one SSD (250GB) cache drive (btrfs) I've figured out that I can rearrange data so I need only two data drives. Enabled write caching on the HP drives and performance is back to where I'd expect, so you saved me a ton of time. This time around I went with a new drive. Cache size would depend on how much you are downloading, or how much you plan to store on the drive for VMs and Dockers. Then power down, remove my cache drive, and reassign this new disk as the cache drive. It's formatted as a ZFS RAID0 (striped) if I remember correctly. 13 I have a cache pool consisting of two 4 TB WD Red SN700 NVMe SSD. The Data pool holds all my docker configs and container data. Switching over to new cache pool was very easy with zero problems. Posted November 11, 2019. My WHS box can provide reads at max speed of the actual drive I'm reading from and one of the reasons I'm trying Unraid is because write speeds are inconsistent in WHS. I was just thinki Jan 23, 2022 · However, if you plan on running any dockers or VMs, it is always nice to have a cache drive for their images. But does the 30 drives include parity and cache drives? Based on 45 drives, wouldn’t it be safe to assume there would be at least a hand full of parity and cache drives? if you lose parity+1 drives in Unraid, all the other drives in the array still have valid data on them (since the files are written whole). Transfer over the network, prior to the parity drive was 130 MBps (in line w/ gigabit ethernet). I have only one cache drive, a 1TB Samsung Evo NVME. Product; News; Apps; Use-Cases; Docs; Support; Pricing . 2 SSD? Both same size, same manufacturer. Free Trial; Buy Now; Stay informed about all things Unraid by signing up for our monthly newsletter. Say you set that as your cache drive and set the cache minimum free space to 32 GB. For some unfathomable reason I reformatted the first one (because it came up on unassigned drives with a different label). I was watching a video the other day where the person said that you shouldn't have the docker container AppData folders on the cache drive because of all the abuse the cache drive takes when moving data to the array. I did something stupid and lost a BUNCH of data. - four drives: this is simple if all drives are equal: space available should be equal to the sum of two drives (spanned) and then mirrored on other two. It learns what data you use regularly and stores it on the Optane drive. In fact I recommend keeping some free space on each Hello folks, Quick question about cache drives. The appdata, domains, and system shares are all set to cache=prefer. Also might run some VMs. Jul 26, 2014 112 21 18. 5-unRAID x86_64 2 x Supermicro AOC-SAS2LP-MV8 (Party Disk + Data Disk 1-9 are plugged into SAS) 1 x SSD Cache drive plugged into motherboard SATA3 port. 1. If so, I've done that. I rebooted the system, but the array wouldn't start because my cache drive is missing. I prefer to do this on cache (/mnt/cache), in the folder "system", to keep access fast. I think I was combining the two separate sentences and reading it as "sure you can try it out, but after a reboot it will change back to the default of RAID-1 AND auto rebalance. When unRaid started out, this was a problem as people with slow disks were seeing quite slow write operations to the array. It's a great way to use what otherwise would be waste. dmg (disk image file) of a Mac hd ( 1 terabyte of data) to an unRaid server that had a 256 gigabyte SSD as cache, how would unRAID handle that? Would the cache be ignored and the write go straight to the storage array, incurring the parity write speed penalty? The point of setting them to cache-yes is so Mover will move from cache to array (exactly as it says in that wiki). I now get the following error: pool: cache state: SUSPENDED status: One or more devices are faulted in response to IO failures. Reply I never had a reason to, so Now that you can have multiple "cache arrays" on unraid, can use a SSD-Cache into a separate array for the "system" folder (unraid configuration), appdata folder (docker configuration), VMs and the like (but I would create YET ANOTHER SSD array for the VM and not co-mingle and "compete" for bandwidth with the docker userdata). The goal is to have the most storage/redundancy/gaming performance as possible. I have a 5 drive array plus a c Mar 29, 2021 · Dumb question. 2' to see changes from -rc. Here's what I've tried: Use 1 500GB Samsung cache drive. Should I use the Cache1/Cache2 option in unRaid, or setup a raid 1 via the BIOS or via unRaid (or is that what it does?)? Jump to content. I'm in the process of building and migrating my first Unraid install and so far everything is working great. Click on the blue "Cache" then you can select the format of the drive. queued TRIM support Jul 23 20:50:02 Tower kernel: ata1. In fairness, I don't have the fastest SSD's for my cache drives. It also houses my docker containers. r/unRAID Yay I finally maxed out my Unraid mobo Yeah pretty much every test I've seen (hear on Unraid forums and elsewhere on the net) shows a real world max throughput, Ram-to-Ram, at ~110Mb/s I have seen over 100 on my network between Win7 and UnRAID (both with Realtek on-board NICs, can't remember the models) through a single Netgear Switch with small frames. Years ago, Micro Center had a deal for 120gb SSDs for $12 each. img files for shares. That brings me down to 5 out of 6 disks allocated. These are all numbers without a cache drive. SSDs normally get hotter than HDDs, so I have the ` Warning/critical disk temperature threshold` set to 65/70c, but I keep getting warnings anyway at 55. May 9, 2020 #75 I cant imagine needing more than the current max cache of 24 drives, the main data array I could see useful though, they have steadily increased that over Set cache drive desired format to XFS or BTRFS, if you only have a single cache disk and are keeping that configuration, then XFS is the recommended format. Yay I finally maxed out my Unraid mobo today: max ram capacity, Unraid 7. It still increases write performance too, as it's faster, higher capacity and less volatile than your HDD's cache. By Matthew_K July 23, 2020 in General Support. I have 2 always on VMs, 1 running from cache (/domains), 1 running from (UD), and bunch of dockers. View More SATA max UDMA/133 abar m512@0xecf00000 port it doesn't seem to be network speed related. I've basically given up hope on recovery, but I'd love to know how to prevent something similar in the future. I am planning to swap the cache drives with 2x Samsung Evo 850tb drives and run them in raid 0, but I do not want to buy them until I can get this working. Be part of the solution. I then tried adding the change to the Syslinux Configuration and rebooted (from the GUI not a full power cycle) and it shows the drive as missing just like Afaik. The system shows a warning that the drive is missing, but it is definitely there in the pool. If I want to perform a preclear_disk on a new drive I've had to disconnect the cache drive and use that port to attach the new drive to preclear. The speed of the write will depend on your unRaid hardware, disk performance etc. The "Mover" then will copy them to the protected array at a time/interval you set. I've tried running a balance and a scrub and the When I first started using a cache drive I did not have any plugins installed and I would get transfer speeds at about 50 MB/s. Then I upgraded the network from a basic 1Gb to 10GBe, and now I'm bottlenecked by the HDDs in unraid. from the Unraid manual: With a single cache drive, data captured there is at risk, as a parity drive only protects the array, not the cache. It’s has similar Unraid version: Version 6. regardless of what you set in unRAID the drive is going to keep warning about temps over 50c. in the future add a second parity and a second cache parity drive so that is when I will upgrade to the 12 or the unlimited just because but for the time being I am good. Jun 14, 2022 · Hi, I currently have 2 X 1TB NVME Drives as a btrfs cache pool but now have another 1TB spare so considering my options. I have a 256GB 850 pro that hat has well over 200TB written no issues. I keep getting temperature warnings about my cache drive (4 ssd raid). Now when I am about to install the cabling I wonder what the best solution would be: Can I use 2x molex cables split up in molex -> 3x sata power (so total of 6 sata green drives) and also run a molex to 2x fan adapter off the same outlet in the PSU? I have had a few reallocated sector count errors on my SSD cache drive, Its only a cheap Kingston SSD and I think its best to revert to original cache method, what is the best way of doing this? All App data and VM's are on cache. Stop array, unassign cache device, shut down, physically swap cache drive, power back up. Hello Unraid Forum, my Unraid server runs as media and gaming machine. I have 2 10tb disks in my Array. Plenty of pci and hdd slots. I guess I messed up order of operations somehow, how do I recover and get the cache pool up? Right now, the NVMe isn't being used because I don't have the pool/cache enabled (I'm running unRAID from a USB flash drive, as I have been doing with the old servers I mentioned), as I'm filling the array with files which are currently on a bunch of external USB-3 drives (ranging in sizes from 500GB to 20TB) and I didn't want the extra step of In my primary unRAID server, all my drives are the same size (except the cache SSDs) but I could add any unused drive if my 14TB drives filled while prices were unreasonable and then add another 14TB at a later date. FAQ - look for the Cache Drive/Pool section, has a number of related procedures; How to add a cache drive, replace a cache drive, and create a cache pool - a nice video guide; The cache disk feature of Unraid greatly increases the perceived There are 2 major uses for the cache drive: Speed up, uploads to the server. Archived. adoucette: Trying to upgrade my cahe, swapped in a 2T SSD but now getting. unRaid 6 with x64 and thus capability of using more memory it can now cache all files. And if you want more speed do 2 SSD drives in either Raid 1 Mirror or Raid 0 Stripe. The server will contain 6 total drives, 12TB 7200rpm as the Parity drive, and 5x 8TB 7200rpm drives. I'm using three Supermicro AOCO-SASLP-MV8 8-port SATA controll I have: *12 various sized SATA/SAS drives in my unraid array including a 14TB and 10TB “parity” drive. Yay I finally maxed out my Unraid mobo today: max ram capacity, best CPU it can handle, every SATA port used, every PCIe lane in use Dec 24, 2016 · Does the 2nd cache drive option with unRaid work as a Raid 0 or a Raid 1? I just lost a cache drive and thinking about getting 2 drives to replace. 5" 1Tb SSD cache drive (using a sixth SATA connector on the motherboard leaving 2 empty connectors) All is running pretty well. I created a config file named zfs. I think this is becomes a My cache drives are 2 Kingston 240gb SSDs in Raid 0. But UnRAID's only use for cache drives is for write performance. 0. Unmountable: Unsupported or no file system on both drives. 2 NVME drive and I use it as cache drive. I am running 128gb of ram in my server, with mirrored 1tb cache drives but it seems like the system is limiting the zfs arc cache to 16gb. Thanks BetaQuasi! I saw a few posts where people reported similar issues, and they suggested switching the cache drive from BTFRS to ZFS had solved their issues. Quote; brin6thepayne. I am positive it's going to the cache drive. as i trying to get help also in the VM forum section here but i dealing with unraid being just slow and pages dont always work or what not. A sustained 60MB/s for a 4GB file is realistic for unraid as others have said with a cache drive, the penalty for this is the data is not protected until it is written to the array. Reading your post again, I'm Strange they show up in the BIOS but don't see what can be done on the Unraid side. Currently it bothers me that all 3 of the array If I set these two identical drives up in a Cache Pool, as an example: Cache Pool: Name: Plex App Data It's a cheap way to speed up vms and offload the big writes to off peak hours. You will love it especially with plex posters . After a few hours my cache drive kept filling up and up. Stop array, change format back to btrfs, format it, copy the goods back. 3. Yay I finally maxed out my best bet is to add a second cache drive as its live syncing (raid 1) and and then you don't really need to worry (as much) you can also download the appdata backup plugin which will allow you to backup the appdata and any other directories on the cache drive to the array on a schedule. 0-rc. XFS is only available as a selection if there is only 1 (one) cache slot shown I'm running unRAID Pro 6. Apr 20 13:13:04 Tower kernel: mdcmd (35): spindown 0 Apr 20 13:18:22 Tower kernel: mdcmd (36): spindown 1 Apr 20 13:18:22 Tower kernel: mdcmd (37): spindown 2 Apr 20 22:17:43 Tower kernel: ata2: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen Apr 20 22:17:43 Tower kernel: ata2: irq_stat 0x00400040, connection status changed Apr 20 I replaced my cache drive about a week ago and also added a second drive as a raid1 pool. 20 MB/s at 20% into a BD 1:1 rip. If /mnt/user0 isn't the (array) disk-only path and /mnt/user is the top layer then what does Mover do when moving to / from array / pool. The speed seems to crash out when transferring to the unRaid box, copying directly to the cache drive seems to peak out at 24MB/s and averages at 16MB/s, this is the same for user shares. Posted And if so, is there anyway to shift the cache from one drive onto the other, or both cache drives content onto the non-cache drives until I can replace the cache drives? Let me know if you feel I need to make a new thread for this! box-diagnostics-20241022-1236. 2 adapters because of ITX motherboard limitation. I run two 250GB SSD's in BTRFS as a cache. Not sure if it would work in unraid without the drivers, but then you know you hit the max speed you can have. chunk 3949479329792 missing 1 devices, max tolerance is 0 for writable mount Was the formatted device re-formatted btrfs or a different filesystem? Quote; Link to comment. Nov 22, 2020 · Hi, Just testing out unraid. My current Unraid setup is just a testing/ For cache you want a drive with write endurance, MLC (Samsung 860 pro) not TLC (870 EVO). However, if you plan on running any dockers or VMs, it is always nice to have a cache drive for their images. Any benefits of using NVME drive for cache (no VM's there), like faster data transfer to the array for example might be worth looking at some second hand enterprise hardware with more expandability if you decide to upgrade your unraid hardware. Yay I finally maxed If you put a second disk in an already existing cache pool Unraid sets them up sa RAID1 by default, which means the 2nd disk is 1:1 copy of the 1st. The drive looks fine when the array is stopped, it lists it's file system as BTRFS, it can be selected as a cache drive and URAID says "Configuration valid". Thanks again! Link to comment. For me I changed it to XFS, hit Apply, Done, Start Array. I say fusion IO, but everyone has a PCIe RAM/SSD storage device today. Thanks again. I started doing this, moving all my files from my cache to the array, but now my Mover seems to just stop moving files (whilst still reporting as running) halfway through the job. I just tested on my unraid 6. If your single cache disk dies, your data (anything on /appdata, including all of your Plex database and settings) is gone. However, even when I stop the array, I can't find the cache pool in Main. It seems to be very promising. I set up my /data share to use the cache drive and all of the disks, but it appears to have never touched the cache drive (as of two days ago there was no /data on the cache, I manually created it in hopes of fixing the issue) and will only write to /disk1 The suggestion for two cache drives comes because of data protection. Thanks Hello. The major benefit for most people is simply transferring data to a cache drive is faster than directly to an array drive, maybe twice as fast, but for me, I’m rarely transferring data from one computer to UnRaid, usually just direct downloading and I don’t care much If it takes a few minutes more for a new download to be transferred to my Plex media folder. and shared directories all reside on the cache drive, but disabled Dockers for the purposes of testing. What if I don’t care about parity can I have more disks in the array? Unraid isn't the OS I want--it's the OS I got; and as a general rule (in my limited experience and your mileage may vary), data hoarders' gonna hoard. You can post now and register later. Looks exactly what i am looking for. View the Docker tab in Hi, I use Unraid primarily as a nas/media server, and I found that I was writing a LOT of data to my cache drive repeatedly when i was migrating a couple terabytes of data onto the new server. -i FTP -i appdata -i archives -i homemovies -i movies -i music -i pictures -i tv -l off Feb 14 15:37:42 HunterNAS cache_dirs: Max Scan Secs=10, Min Scan Secs=1 Feb 14 15:37:42 HunterNAS cache_dirs: I've recently setup my unraid server and have 3 hard drive in the array, 1 for parity and 2 for storage and for cache i started with a 250gb nvme and added a 1TB sata ssd a few days later. You can have a cache pool, which is where you have two or more same size drives mirroring each other (the same data on both). By running two disks in a pool you can mirror them as a RAID1 mirror. I think the max I was just wondering today why the limitation to data drives in the array is 24 is there a technical limitation that makes it more difficult for Tom to increase it to say, 32, or even larger? I understand that the larger the data drives, the higher the likelihood of a dual drive failure, but 4 are data drives (only used for Plex) plus 1 parity drive. Moderators; 71. I don't know what JBOD is, but for parity to work (in UnRAID), the parity drive must be the largest drive (so it has capacity to store the parity "0/1" bits in their proper place. Posted August 13, 2017. Jump to content. You can go back in and readjust to only for the share you want to keep only on the cache, like the vms etc. Even the video the official docs point to for newer versions shows a 'cache' section here rather than a 'pools' section. Does unRaid support a cache pool of two drives with one SATA SSD and another M. Members; 6 Author; Share; Posted May 27, 2021. View More. This is especially important for the backup unraid because I can only have a max of 6 drives, and don't want to waste a drive space for cache 2) Now for the main server, I'll have a cache drive so that plex could transcode to it without having to spin the array every time. (I think the array has to be stopped first. W Let’s take your 232 GB SSD as an example. See FAQ for unRAID V6 linked in my sig for more about cache pools. I plan on using unraid box mostly for plex and my main file downloader for the household. I installed a SASLP-MV8 and have it configure setup as a pass-through to unRAID. Thier performance isn't great, but its still better than a HDD. I have 3xTB drives for data and plus 1x3TB for parity, two of the data disk has 5gb free space and the other has 115gb free space. But I also used it for partial downloads (incomplete folder) and for rclone cache. Weirdly it was still showing the cache drive as working in the UI. Today with the new unRAID, as yesterday evening, all of a sudden, my cache drive did not work anymore. On the parity array, all non-failing drives are fine, and you can rebuild as many failing drives as you have parity drives, max of 2. Thank you! Quote; Link to comment. After rebooting, my cache drive (500gb SSD) has become an unassigned device. I don’t see what benefit I would get from having a cache drive/pool. I'm going to be building my first unraid server this weekend primarily as a plex server, but also as a NAS. What i'm trying to work out is Age-old wisdom says to use an SSD for heavy IO activities like rar unpacking, an SSD for Plex metadata, an SSD for Media, or other Share’s caching. Assign new cache device to slot, start array, format new cache drive, set appdata share back to cache prefer, run mover. 5TB useable space in my pool but don't think 3 X 1TB drives can be used in any way to give me that space with protection. Maybe this is the problem with free low space? My current cache pool looks like this: I would like to convert that pool into a single drive and simply use the 250 GB Samsung SSD. du -h --max-depth 1 /mnt/cache This forum is one of the main reasons I use unRaid, the support network is phenomenal. I have cache drives, but they won't be added to the array until my data migration is done. The server would also lock Memory: 8192 MB (max. It is stopping SAB and pretty much all of my dockers at the moment. THAT SAID, I did used to run into occasional issues when I was importing a lot of data into unRAID. 2 ssd that i’m planning on installing for my plex appdata. I currently have a pool of 2 devices called 'cache'. Posted October 22, 2024. CACHE drives were solid/stable, but the ARRAY drives would drop off randomly - only one at a time, never both. One 2. Unraid itself will warn you when you have multiple profiles which is the biggest hurdle that people get burned by when it comes to Btrfs RAID, and if you end up causing it to be mounted degraded (like if you remove a disk from a cache Here's an explanation of the Use cache disk options (turn on Help to see it for yourself): The way to get redundancy for cache is with a btrfs cache pool. e. Upgrade to 2 1TB brand new crucial cache drives with same old I have a SeaSonic X-Series 400watt passive cooled power supply I intend to use for my new unRAID NAS. This announce post is perfect for quick questions or comments, but if you su Adding a new data disk to Unraid is a simple operation. Quote; JorgeB. SLC is better then MLC for long term storage. - Directions I can find say go to Settings > Global Share Settings to set my cache min disk space, but I don't have any such option. Posted May 27, 2021. To do so go to the appdata share and set it to prefer cache then go to main and start the mover. I stopped using the cache pool as a cache and instead made it my dedicated VM and docker storage. Yes indicates that all new files and subdirectories should be written to the Cache disk/pool, provided enough free space exists on the Cache disk/pool. Additionally, if I had a large drive fail, I could add several smaller drives for the same reasons until a better time came about. I have six 10TB drives in my array, plus cache. Controller Benchmarks helps to identify if the drives attached to it will potentially exceed the capacity of the controller if they were all fully being read from a Jump to content. . I replaced my 240GB SATA SSD with a 1TB M. Set system and appdata to cache: prefer to move files to cache from array. The mover is moving files to disk 4 on my drive which has about 40 GB left on it and it keeps filling it till there's 0 space and then after a while the drive will get like 6GB back and then it'll fill it again. Cache" which means the files are placed in the cache first when moved to the Unraid system and then moved from the Samsung Evo 960 NVMe SSD - which can easily max out the adapter I enabled jumbo frames in Unraid's settings but that didn't make a difference. At this point, I see no reason to get anything less than 500gb anymore as the cost difference between 500gb and Currently I have my array and a single 512GB SSD I use as a cache drive. I set it up on an old decommissioned server rack with 12HDDs and no cache drive. Not with unraid but just my rclone mount scripts on straight ubuntu - what caching will really help with is jumping around - fwds and backwards in a file and as you mentioned with stuff like your kids watching the same file over and over - if you were sharing with a few people then Create a new disk pool. If you write to the /mnt/user0 it goes to the Array (disk). i having issues with unraid being extremly slow lately VMS running slow Dockers slow unraid just i dunno,, its just acting funny. I don't think there will be a performance hit. mover is trying to move movies from a cache drive. When it is doing stuff to the drives directly like clearing, they get around 240MB/s. I erased them through the unraid UI. 0301 32 slots 1 ports 6 Gbps 0x1 impl SATA Thank you for clarifying jonathanm! I reread the quote from limetech (below) a few times and think I see where my misunderstanding was. 2 drives via pcie card? Hey all! I recently upgraded my Unraid NAS to an SSD cache finally, but my speeds are still at around 80MBps write. Use 2 500GB samsung/crucial cache drives. A plex docker doesn't require much storage, as the bulk of the data will be the movies/tv shows on the main array. Edited October 22, 2024 by Xenu. It’s 1tb. Hope that helps. Everyone running an existing beta or rc is strongly encouraged to upgrade. Do i just stop the array, remove one of them then put the new d Jump to content. I now set scan users folder =true. " Seems like what it's actually saying is that only the If you are thinking about 30+ drives unraid just might not be the solution for you, check our freenas, ceph or linux ZFS if so. However, you can choose "/mnt/user" if you want, it is "more Unraid way". I'd like to use the now free slot to add an extra SSD to the cache pool - and go from 1x250GB to 2x500GB in RAID1, to get the added Well, if I try to copy those files manually to cache drive share directly then I get the same situation, so first this copy fast but then It slow to 30MB/s. 2 slots and ARRAY drives were connected via a Highpoint SSD7104 PCI-e 3. Go back into the shares from before "Use cache pool" to Prefer, then run Mover and things will get moved back to the cache drive. enabling "Tunable enable Direct IO" made no difference. That means if you lose a drive, you still have a copy of the cache data. I am not 100% certain what is happening. Would windows be limiting / Throttling the LAN connection if I'm able to transfer between windows boxes at 72MB/s. Are those I've noticed that on my 250GB Samsung Evo cache drive that 104GB is used at all times. sv" and place it \appdata\scripts. Jul 2, 2023 · I have rebooted my server and am unable to start my array as my cache pool shows my cache device as "missing". Now it does not spin up. The Cache disk was introduced to mitigate this. I have a 500GB Cache drive that has about 300GB of free space on it. What is horrible? 1gbit max equates to about This freaked me out, then I noticed that my first cache drive was listed as "Unmountable: No file system". Thanks. 0 x16 RAID card with U. zip. Yay I finally maxed I'm thinking of buying a 256/512GB SSD to add, but I'm not sure if it would be better to add it as a cache drive (don't currently have one), or as part of the array, but have my VM images & docker config files etc all on it to speed them up. My primary concern is speed of the server as a whole when doing file transfers. In circumstances like this, when the cache drive is full with only a proportion of the file, do I need to manually empty the cache drive somehow and then restart the transfer now that the share is set to array only? If so, how do I remove the (part) file from the cache drive? When I browse /mnt/cache I don't see any option to delete files. Well, work being work, the scope of the job changed and now most of my time is spent imaging and restoring HDDs, etc. this is super confusing. Assigning devices to Unraid is easy! Justremember these guidelines: 1. I noticed my services were down and saw that "docker service failed to start". Stay For comparison: I've been doing some large copies from quick RAID 6 box to slow(ish) drives in a couple unRAID servers (disks negotiating at SATA 2 speed because I'm using very old but extremely reliable Supermicro drive cages) without enabling cache but with parity enabled, using Double Commander container with verify enabled. "hot"). Insert new drive, spin up array. Current setup: 4TB Parity with Array devices: 2x 2TB and 1x 4TB + zfs cache pool with: 3x m2 ssd. Reply reply Top 2% Rank by size . That means the largest single file you can write to a unRAID OS supports up to 30 devices in the parity-protected array (28 data and 2 parity) and up to 24 devices in the cache pool. They are cheap DRAM-less drives. *4 enterprise SAS w/ internal battery backup (high write cache) *6 enterprise SATA w/ internal battery backup (high read cache) *10 SAS 3TB drives (caches everything that isn’t cached by SSD) *4 SAS 6TB w/ 2 SSD ZFS storage for (VM backup as well as some other shares Optane's main purpose is to be used as a buffer when reading data off of spinning drives. Two 3 TB Reds in raid1 filled to about 50% right now. 8k Posted November 11, 2019. If there is insufficient Enabled both drives as cache and had to run balance option for system to see drives as RAID1 instead of 1TB RAID0 (512GB drives). I have 1 pool thats my SSD for my Here's a summary of my experience trying to do this : I had a 128 GB cache drive that I wanted to update to a 1 TB NVME. For some reason Unraid is reporting it as full. i dunno how to explain it all. Reply reply more replies More replies More replies More My pre-cache drive max speed was ~10-14 MB/s I'm now running at max speed the drive will put out to unRAID box, which is confirmed by running a test burn from same drive to laptop SSD. Product; News; Thanks a bunch. 2 to M. But the reason for this ("the parity drive needs to be the largest disk in the array") is that now you can add new disks or exchange old one with disks up to 8 Tb in size. More posts you may like Yay I finally maxed out my Unraid mobo today: max ram capacity, best CPU it The workaround on how to make Unraid shares with quota. Which steps do I need to follow? PS: It is mostly for the sake of learning; I know that having a redundant cache is ideal. I don't have a parity drive, just a cache drive. Mover ignores cache-no and cache-only shares. 3, disks spun up when accessing /mnt/user/media/Film, which it definitely shouldn't. 5tb (in bytes, i have a 4tb cache), save as "moverignore. Motherboard manual is Here My SSD cache drive is periodically reporting temps of 48C esp when under hard load from Plex with transcoding multiple streams. As you've already concluded, it's a personal choice that depends essentially on whether or not you want your cache to be fault-tolerant. 0: AHCI 0001. 00: ATA-9: Samsung SSD 850 EVO 1TB, S21CNWAFC03914M, EMT02B6Q, max UDMA/133 Jul 23 2. Get an nvme drive and put your appdata on your cache. I'm missing something here. Total newbie here so forgive me if this is common knowledge. TubaMT Member. I have a 2 drive cache pool with Cache 1 256GB & Cache 2 128GB Goal: I want to revert back to a single cache drive arrangement (256GB). Edited May 27, 2021 by Frank1940. Anything like a super micro, proliant, or a power edge. This guide covers how to use cache pools as a pseudo read cache. Make the directory where you will store . Any suggestions would be highly appreciated. It is currently full. Initiate mover, wait I think UnRAID hates my Cache Drive I think UnRAID hates my Cache Drive. "cameras" is the name of folder where The whole idea of a hot-swappable drive is that you can indeed change them while the system is on (i. I'm not sure for the parity - they are always full, and keep up the speed of the others. 8. This cache drive is used for appdata, system, isos, VM img, docker img, all good part of the unraid system. So have been reading up on cache drives and just a bit lost. uasze vrcfs yfv ddwnwv ewjfq isewz nms ptgljl sgchp xfxoon