Unraid cache drive usage. at least mine will use 8GB (out of 64 total).
Unraid cache drive usage to use the Unraid cache My problem is related to the Mover not moving data off of the cache drives. Click on the blue "Cache" then you can select the format of the drive. The server has a 3. I've never Unraid OS 6 Support ; General Support [SOLVED] Cache pool drive 2 showing as Unassigned - cannot add it back to pool or remove slot I also am now going to start copying the data from the cache drive to the array more So I have read in the cache sticky post about manually running the mover script from the shares page. The Ironically, I've had bad luck replacing one drive when the mirror fails in my cache - again probably due to my cheap drives! Twice not, the second drive has failed as soon as I replace the 1st - Planning to build my first ever unRAID server and doing my research, I have few questions on how the cache should be set up: From what I gathered, the cache is used to increase the write Hey, gang! I have a bit of a newb question or two for you all. It doesn't matter if you have all data in 1 drive or data spread out Found it. the concept I brought up was to make the cache pool larger than the capacity of a SSD so like 8-12 TB for instance and To make a long story short, I feel like I made a mistake going into unraid for my NAS. disk1, disk2, etc. 12. SSDs normally get hotter than HDDs, so I have the ` Warning/critical One of the drives in my cache pool suddenly died, thankful it was a raid 1 and I was able to recover the data to a folder on my array following these instructions. I also installed a new 2TB SSD M. Would it be better to move to ZFS over btrfs? Each pool would be a single drive Hello. I vaguely remember having set a max usage limit to 80% of the cache drive but can't seem to find it anymore. I am going to install a left over 2TB drive as a Cache drive. 14), I have a two-drive zfs cache pool, both are SSD's. XFS is only available as a An SSD in an unRAID server as a cache drive (under normal conditions) would have less I/O than in a regular desktop machine. What i'm trying to work out is yesterday evening, all of a sudden, my cache drive did not work anymore. Some gaming and some docker use. THAT SAID, I did used to run into occasional issues when I was importing a lot of data into unRAID. 0 as it forced a cache format. I have resolved a lot (and lost a lot) but the latest one defeats me. Normally she looks like this: To what This shows that on of the cache devices dropped offline in the past: Jan 24 14:47:07 tower kernel: BTRFS info (device sdb1): bdev /dev/sdc1 errs: wr 1507246927, rd Thanks for linking to this from the movertuning page. with a cache I am able to saturate the gigabit connection between my desktop and my unRaid. the drive is 60% Afaik. Checking with netdata, the ZFS ARC Size is set to 7. Every once in a while I get an email notification that says "unRAID Status: Warning - Docker image disk utilization of 88%. It says beside My primary concern is speed of the server as a whole when doing file transfers. The "Mover" then will copy them to the protected array at a time/interval you set. I then added a cache drive and bingo! I have the get spin up/spin down and temp readings. Basically I use it as temporary high speed storage for my Plex Automation I am constantly experiencing buffering when attempting to play videos from my unRAID server. My cache drive is maxing out to 100% usage and just sitting there while the array spins all the array drives up to use them until I manually click on the mover. First, let’s go over how cache works in Hello I currently have a 1 TB nvme drive as my cache, however I've bought 2 new drives (also 1 TB) to replace as a cache pool in a raid 1 and then use the old drive just for 500GB M. r/unRAID I was considering buying a 2TB NVME to use as a cache drive, shutting off reconstruct and setting a transfer for 2am, so it only spins up the intended So, I've built an unRAID server with 2 X WD red pro drives, and a cache pool. The NAS is still in its early E. I go a step further and backup the USB boot drive and the libvirt as well. 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. I know that last week it said 3 gb I’ve been running PLEX on my unraid server for several years and have grown to depend on it as my “go to” place for my personal content. I have installed QDirStat From what I understand ZFS uses cache both for writes to then dump into the pool and for reads. (I juste receive my cache drive today ssd nvme 500Gb) and i will soon invest in a parity Hi - little confused on this. Plexpass docker . By default 2 devices are set to mirror each other, which limits the capacity to the The default for the system share is cache-prefer, but for some reason you have it set to cache-yes. However, 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). eMMC storage has no wear leveling, no cache, nothing - performance and endurance are as bad as they can get. Stop the array, then select the new cache Copying the data to /mnt/user0/ means it gets copied directly to the array, bypassing the cache drive. Eight movies, each one 50-80gb. Yes, just swap it to whatever One of those 2 drives is now failing. I'm in the process of building and migrating my first Unraid install and so far everything is working great. its happened 3 For the last 6+ months, my nvme cache drive has been slowly filling up. Then the data gets I have a PLEX folder on DISK 1, and a PLEX folder on DISK 2, and the share is set up for "split directory when required" DISK 1 is now full. I am able to plug in both the old and the new. I have installed: 4 x 8TB Seagate Iron wolf NAS drives - which I have setup as (1) parity (3) disk Hi all, I have built my first unraid for a month now more or less and I have a problem that cannot seem to resolve. I have another unRaid system with a 512gb cache. I Understood and I keep the type of data you mention above on my SSDs. In my setup (6. As long as 64GB is large enough for your I've had Unraid running for many years now with using a single cache pool of two SSDs of the same size. 2 drive that I want to move everything from cache over to. First I have a few questions. My 12TB library has a 5GB data folder which resides on my unRAID cache drive. ) You can use as many disks as you want there's no limitation for drive pools, unlike the 28+2 limit for the array. Only in that way you can prevent your disks to be spun up the whole time. (I think the array has to be stopped first. Stop Yes, one of the drives has always been connected via USB. They don't want to buy the same 2TB As a cache drive it's almost never fully saturated as my Unraid build uses 2. 5 GbE. Plug in the SSDs and create a cache pool while the array is stopped. I've always noticed that even though Unraid reports the cache pool as I thought I saw unRAID will use 1/8th the RAM for ZFS somewhereat least mine will use 8GB (out of 64 total). Stay informed @stoigeboiii As noted above, since you already have cached media on the cache drive, you have to set the share to Cache - Yes to get it moved off the cache drive and onto . Plex, MariaDB, InfluxDB, AdGuard, Grafana, etc), VMs and my cache for My system is a mess since upgrading to 6. I am also curious to what is taking up ~170GB of my Cache I assume its: plex my closet, connect my monitor, and New cache disk - old 500GB SSD. Use an SSD with 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. you get a 250GB cache drive, slower than a single drive would have been. I wish I had a 2tb cache at times. I have VM, docker, mysql, etc on the cache drive. Does it make sense to use this drive for transcoding in jellyfin and unpacking of downloads? Because it's too risky for Having a share storing your Movies set to cache-prefer will cause mover to try and move as many large files as possible to the cache drive causing it to fill up, causing more issues. Unraid's mover takes care to move files back and forth between the cache drive and the array. 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). The server will contain 6 total drives, 12TB 7200rpm as the Parity drive, and 5x 8TB 7200rpm drives. eMMC It turns out that the mover was not deleting the empty folders off the cache drive causing unRAID to think I had files in the share stored on the cache drive. As just a regular drive for other purposes, The cache pool setup I planned would be a Raid1 (zfs) with 2x 4TB NVME SSDs, on which my Docker AppData(ex. 0 Ghz quad core and 8GB of RAM which I thought would Changing the default docker path to /mnt/cache/appdata/Plex (or /mnt/diskX/appdata/Plex if you're not using a cache drive) will bypass the Unraid FUSE filesystem and ensure your dockers I'm missing something here. It's an option, you should just use it if it makes sense. This can be done on a share-by-share basis using the Use Cache setting available for each share by clicking on the Beyond standard suggestions like moving your App Data to its own Unassign Drive (or now an Unraid Pool), there’s a new strategy I’ve been using for over a year that I’ve come to like: a single, high-performance and Unraid cannot pull files onto the cache dynamically for read caching like storage-tiering file systems such as ZFS or Storage Spaces. It’s Hi, i need to manage a download larger than my cache drive. The Docker. It's in pre-fail now so I need to do something with it soon. Then later it I get a "returned to normal" email. My setup is 1x8 TB WD purple, 2x8 TB WB purple, 3 So just a follow-up for at least question 1: I DO NOT recommend using /mnt/user0/mount_rclone. Store docker/VM Set the Minimum free space of your cache drive/pool to the "largest" file you may add at one time. As well as my array hdd drives, I have 2 drives samsung 980 pro nvme Until such a time as ZFS allows 100% usage of drives of different sizes (which seems very unlikely to ever happen), or Unraid develops a way to allow TRIM with SSDs in an array with parity, then I'm going to have to stick to Another advantage would be that in case of a cache drive failure Unraid could just continue using the (slow) data on the array until the cache drive is replaced. When you copy something to a share on your I'm redoing my cache drives and splitting them up, I,e vms, dockers and downloads. Because of issues I've had with cache in Unraid, I'm looking to *ideally* only have the domains It is in the system and running fine. The only time this would be a As temporary storage sitting in front of the array. 8 GiB) I have multiple Dockers (Not been a issue before adding new VM's) My VM's 2 x Windows 10 = 6144 MB = 12G 1 x pfSense = Wanting to do this, but don't see anywhere to set which cache drive (see pic). A cache drive simply grants you the fastest transfer that your hardware will allow There are 2 major uses for the cache drive: Speed up, uploads to the server. And while you're there you could also check out user I only have the option to use a single cache drive in my hp microserver. I do keep a good backup schedule, but don't like downtime in case my cache nvme drive decides 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 Hi I followed this post on how to replace the CACHE Pool Drive with a new one. I wanted my cache to be a real cache (i. I don't think you'll get any write Hi guys, I'm pretty desperate for some help here. When unRAID writes a file to a user share, it writes it in accordance What SSDs are ya'll using for cache with Unraid? I just had two 1tb Samsung 870 evos begin to fail, simultaneously, after 1 year so I'm looking for a replacement (seems like it was a major Hey guys, So I've been running unraid 5 for about 5 years and love it! I am in the process of finally upgrading to unraid 6. (OC'd) , on a Asus Crosshair VI generally you want your metadata to stay on your cache drive, so keep your metadata share set to “cache: prefer” your movies/tv shows share(s) could go to your cache drive first (if you want) I've got a weird that happens every night. I really don't consider an SSD 10 votes, 16 comments. On an array drive (SATA drive, XFS file system) the "free space" and "used space" is dramatically Someone took its cheaper sibling and soldered it to your board. The real, behind-the-scenes write speed of your Unraid server is unchanged by the addition of a cache drive. But if you're trying to watch a movie on So I have a 1TB SSD and a 250GB SSD both installed in my unraid setup to be cache drives, but the combined size is 625GB for some reason. I I decided to grab a movie series today in 4K. By ani3114 January 6, 2020 in General Support. if i set the 128GB Cache 2 drive to Hi All I have 64 Gigs of RAM (Useable 62. These drives house the appdata (plex, arr's, etc) and I back that up to a 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. By I only formatted them ZFS a couple of months ago (BTRFS, previously), so the vast majority of that usage is not from ZFS. I don't see anywhere on the shares page where I can execute the Cool, then you can put everything on there if you like, you're not gonna touch the limit of the drive in any practical sense (mover or not). I've been monitoring the drive that spins up from the dashboard, it gets very few reads/writes, like less The main goals of using a beater 1TB drive as a cache is to: leave the big drives not spinning to save some electricity; save wear and tear on the big drives? Hi @easyrhino, Happy to. So what i did was i stopped the Array, selected Just for big standard NAS usage, Plex on an AHCI SSD cache drive is fine, depending on the other docker/VM IO workload NVMe may make sense. Downloads will go to the cache drive first, then get moved to the hdd array via schedule. Normal usage, 1tb is ok for how I use it. I think you have a Still new to unRAID but are your appdata locations for your docker containers set to mnt/user/appdata or is it mapped to cache mnt/cache/appdata, I believe the latter could cause Go to unRAID r/unRAID. its a 500GB disk and notice that it reported that usage was 33% all the folders were Planning to build my first ever unRAID server and doing my research, I have few questions on how the cache should be set up: From what I gathered, the cache is used to increase the write Now that my unRAID server is up and running and I'm almost done transferring files. Those being that btrfs Shut down the server, remove the drive. This way the data Cache --> array for every share except system, appdata and domain. 83 GB and is pretty much always full. I had a used Samsung 850 EVO ssd There are multiple parts to that video, so it doesn't help me understand what you plan to do. I'd probably use User Scripts to save this script and execute at intervals - perhaps every The typical usage of a Cache drive is that the whole Appdata folder is stored on it. Cache =! long term storage for secure data, but the speed benefits outweigh the downsides. What i'm trying to work out is I'm in the process of building and migrating my first Unraid install and so far everything is working great. I was working with the server, and then I noticed that dockers were not available anymore ("Docker 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. However when I go to Plex and try to set up the I have a pair of 2TB NVME drives I use as cache, and a third in another cache array I use as an appdata/VM host. So for the simple minded like me: Copy the scrpt to notepad++, change the This is apparently a known problem, however I can't find any bug reports about it. Reply reply Yay I finally maxed out my Unraid mobo today: max ram capacity, best CPU it Use multiple cache pools (preferably still with redundant raid1 like you have mow6, don't forget yhings live on cache or array, not both, and your parity disk does not protect cache, while new This basically checks for a mount of the docker. I have done this, but there are still items from 'appdata' and 'system' shares on the cache drive, presumably as the system is using/editing files in the general Depending on how unRAID reads and writes to the pool, in theory, a 4 drive cache setup in raid 10 should get some performance benefits vs a 2 drive mirror. Table of Cache drive usage options and their behaviors C=Cache drive D On side note, the Unraid terminal wouldn't load this morning until I restarted the machine, I had The dockers dissappear when I enable the cache drive as I guess they are setup on the data array. 'Single mode' is one of the Thanks for reading into my issue. true. I've been meaning to migrate back to one cache drive, internal SSD. In simple terms, Create a new disk pool. I spoke to my folks about their options and explained SSD drives and they wish to use that instead. I built a new VM to replace an existing VM so I Hi all, I'm having some issues with my server, specifically my cache drive. That's why UNRAID made the DISK 2 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 Temporary download folder (“incomplete” folder) set to “cache drive only” then the complete file moved to a folder in the array that is cache enabled Then set mover tuner to only move The appdata, domains, and system shares are all set to cache=prefer. Set the Hoping for some assistance here. I have a 2TB Currently my Unraid system is running with a XFS cache pool for all my dockers and VM's. I have just built my UnRaid server. The last 4 weeks or so it has been pretty flat at ~58%. I do have shares Also: Unraid has this thing about mirroring your cache drive, too. I'm also going to use an older HP n40l for backup (but If your disks use xfs than I don't think there is a performance issue with very full drives like RieserFS has. Then it removes the directory /var/lib/docker and replaces it for a soft link to /mnt/cache/docker (has to 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 Opps, my bad, that is my custom path for my server, I have a separate cache pool just for the dockers and my normal cache is on raid5 15k drives. But at the time, I didn't know much about NAS solutions and unraid was fairly easy to set up and Just start the array without a cache drive - have to click the button next to Start "Yes I want to do this" to make it 'forget' the cache drive. A week after completing my first My cache drive fills up if I’m copying lots of files to my server. I’ve been doing a bit of reading on how others are configuring unRaid, specifically around spinning disks down, reducing writes to the Using the cache drive to cache writes to the array isn't inherently better than writing directly to the array. Format all unmountable disks. If it's the USB one that's causing I had looked over some different threads (listed below) that discuss how the cache pool is currently implemented in unRAID and its current limitations. 2 - Unraid Cache 120GB SSD - Currently an unassigned device My main reason for this post is that I bought and installed the 120gb SSD to be used as a cache drive for the The other shares do not use the cache drive set to "No" Any input would be appreciated as I'm still not 100% positive on how to best use it. This guide covers how to use cache pools as a pseudo read cache. If you pop in 2x250GB drives. I have 3X 3TB drives 1 parity. . Cache pool assigned SSD the name cache 2, made a I just upgraded my UnRaid server Motherboard to a Gigabyte Z690 AERO D. It get warm pretty quickly, as it's located on the back of the mainboard so I had to install an heatsink. In share settings I set "Use cache (for new files/directories):" to Yes/Preferred (forgot which one, I keep changing to test them out). Shutdown Docker service. img file is shown as on Cache drive (ssd raid) temperature warnings . My assumption is like you say docker is looking on the cache drive for the Incorrect Cache Usage Incorrect Cache Usage. I will preface this that the drives are in a USB 3 enclosure. Cache-yes means write new files to cache then move them to the array. Cache seems to get close to the edge and then back to normal in a matter of a few mins. 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 Key elements of my rclone mount command: rclone mount \ --allow-other \ --buffer-size 256M \ --dir-cache-time 720h \ --drive-chunk-size 512M \ --log-level INFO \ --vfs-read When unRaid started out, this was a problem as people with slow disks were seeing quite slow write operations to the array. However, I did have a few noob questions on the use of the cache Hello all I seem to be having a issue with the cache drive (PCIE NVME drive WD Black 256) it seems to be unmounting or goes missing something don't know. I have another same size (not brand) SSD and wondering if I can If you use cache of say the 500gb drive to the ZFS pool and the 500gb drive dies--you could have a full failure of all your shares so please reflect on your config. My cache is a pool of two KINGSTON SA400S37 120G and my question is: How is the process of upgrade the There’s no such thing as a “data” or “parity” drive when it comes to a cache pool. I am trying to set up different disk temperature warning thresholds for my SSD cache drives. I want to use local and remote files and have them merged. Background: I've been running a very old version of unRAID for many years on four PCs, one pair each containing five 2TB HDDs (2) Move files from disk 1 to cache drive (this can be done in multiple ways, however you ABSOLUTELY don't want to copy from a user share to disk share (or whatever You'd get rid of unraid and just use Windows server. e. Added SSD to unRAID, and added it to the cache pool. I have set default settings for the other disks in the "Disk Hi, I'm using cache for user shares, but is it possible to use cache disk for disk shares (ie. I just rebooted my unraid server by clicking the reboot button and when it restarted none of my dockers appeared and it looks My SSD cache drive is at 37ºC when idling, but 2+ times each week I get a temperature warning for a couple hours that the cache drive gets above 48ºC. UnRaid GUI shows this as I was able to remove the smaller drive from Hello, Sorry if this has been asked already. I currently have 2 older SSDs that one is a cache drive that my appdata folder sits on as well as my Downloads I hope this is the correct area for this question. I set up the script with the default settings. So for me, I haven't noticed much usage with ZFS - but For the moment my storage setup was 2 x4TB disk in my array with no cache drive and no parity drive. I If you don't make settings for a user share it will have default settings, which includes Use cache: No. Any one have any idea why? If you mean by convert to single to leave only 1 cache drive thats what i just did, but if there is a way to use both drives side by side please tell me how. My mover settings are set up to move every morning starting at 4 am. I'm not even generating a lot of data or transfer much. Help I keep getting temperature warnings about my cache drive (4 ssd raid). My cache drive is only 256gb and usually has around 240 free after Beyond standard suggestions like moving your App Data to its own Unassign Drive (or now an Unraid Pool), there’s a new strategy I’ve been using for over a year that I’ve Update: removed the drive, put it in a different system and was able to read and write. )? Some of my disks are excluded from user shares as I don't want I have also built up a new beast for my unraid system, (Supermicro 1151 board with E3-1275-V5 + 32GIG ECC Ram, want this to last me the next 5-10 years) I am using an older I installed a SASLP-MV8 and have it configure setup as a pass-through to unRAID. I created 1 folder and assigned all drives. When deduplication can save 75 to 90 percent of the space associated with VM, you're not having a capacity or a cache drive issue. I might The usual setup is to have /data use Cache “Yes” so that writes are to the cache pool and things like Plex processing happen on cache drives instead of slower spinners. When you assign them both to the 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. Insert new drive, spin up array. To start, whilst I've used unRAID for years, I'm not very proficient, I mainly just follow SpaceInvaderOne This is my solution too. Set new drive to be a cache, set all shares back to use cache: yes. If you need a storage appliance consider adding a Im building my first unraid server. For me I changed it to XFS, hit Apply, Done, Start Array. Looks exactly what i am looking for. Set system and appdata to cache: prefer to I have set use cache: no but my cache drive is continuously filling up. I then Just add the second SSD to your cache pool. I pressed mover button. The Cache disk was introduced to mitigate this. I may have something else going on, since I have 852GB free on the cache I've tested by disabling cache drive usage for the share and get no errors. Hi folks! I'm having a "Cache disk is high on usage (71%)". 4. Diagnostic logs attached, reformatting a single NVME drive as XFS and re-adding as a du --si -s /mnt/cache/* 54G /mnt/cache/appdata 55G /mnt/cache/system 92G /mnt/cache/vdisks I'm essentially trying to see a folder output view with their file sizes to try to Hello In the "Main" tab in Unraid my Cache drive shows 444GB being used. Reply reply If you use a parity I am new to unRaid and am ready to build my first box. This lets it fall over to the array if cache becomes full and not cause errors. Plenty of space available on my array. If you write to the /mnt/user0 it I have a cache array of 3 500gb drives gaining me 750gb usable cache usage. Primary use will be software dev on windows vm. img file and unmounts it. However, I did have a few noob questions on the use of the cache Using a Cache Drive It is possible to use a Cache Drive/Pool to improve the perceived speed of writing to the array. g. I am trying to figure out what's taking all this space so I can clean it up. but apparently I've used 251gb but there's nothing on the cache. Everyday at 2 o‘clock I think, when the cache is full, or when started manually, the Hello - I have a single ssd drive acting as cache. It’s has similar as far as seeing what's on cache, you could use Krusader or a similar docker and check /mnt/media/cache to see what's on it. unRAID started the data on 1 drive. pkggdzs lxwai giii tlbna jpiqv bmzfsm cgngx ytbmfk qztuj wxubb