Unraid Slow Write Speed, For each disk that is nearing the middle of the platter, the … Hi all.

Unraid Slow Write Speed, Use the Seagates for your data As title. Having a bit of trouble with my NVME write speeds under unRAID specifically. It’s recommended for initial transfer to disable both cache and parity, for maximum speed and efficiency. I'm seeing slower-than-expected copy speeds between UnRaid NVME cache drive and Truenas zfs array. Read speeds are only limited by the speed of the drives you are accessing. I'm running a Dell Hello, Just upgraded to version 5. There is an internal cache of a few gigabytes inside most USB drives, once that gets full then you are flushing to disk at its actual write throughput. 5gbit Switch Computer: 2. Update: I ran SMART short tests on all 3 drives: 2 12TB and 1 8TB. I am copying my files from I have spent the last 8 days trying to transfer over 9tb of data, from my old windows rig to the unraid server before formating my pc. Its not striping, but should improve read speeds And the cache drive will make a big difference to write My setup: HDD: 6x WD Red Pro 22TB (XFS - 1x drive parity) SDD: 2x WD Black 4TB (ZFS - Raid 1) I have turbo write enabled but seem to get write speeds of around 110MB/s when My rig has displayed write speeds from 8-15MB/s for the last 3 years. Hey all, New Unraid user here, bought the lifetime license last week after getting basic setup done with my trial and loving it. A cache drive is a super‑fast SSD that temporarily holds those files, then Unraid moves them to the main array later. slow cache write speed I used to get 2gb/s+ when writing to my cache (1tb Kingston sa2000 m. After adding two drives to my array and formatting them to XFS, I started transferring data to them from an unassigned drive which Setting up a new server and its telling me a parity drive sync is going to take over a week to complete when I have less 300GB on the entire array. Unfortunately, the speeds I get are really low and I'm wondering what's wrong Hi, I have slow write speeds to cache disk (around 40MB/s) Scenario: Docker hosting Sonarr/Radarr copying files from M. So if your drives top Writes to the Array will be at about that 50/MB's speed, reads should be at full speed of the disk (s) you're accessing. Copy from drive to drive on the unraid server using Windows Explorer and Teracopy I get Data is written first to the cache, and then committed to the flash storage. Parity build is also limited to Archived This topic is now archived and is closed to further replies. Nas and Computer write files 250 I've searched the forums for solutions, tried a few things here and there but remain troubled by slow read/write speeds (25mb/s each way) to my array. Somewhere between 40-60mB/s depending on the file. ) Choose the right CPU The most important part is to understand that My server has had absolutely terrible SMB write speeds since updating to the latest Unraid version. HP DL180 G6, 64gb ram, dual X5570 xeon 6 disk 4TB WD RED array 1 disk 4TB WD RED parity 1 PCIe 960gb NVMe for cache and VM 1 SSD 120GB unassigned disk Write speeds If you are only checking the write speed to unraid perhaps check read from unraid. After the upgrade, it hovers around 25mb/s. I have "reconstruct write" turned on instead of the slower "read/modify/write". 0b9. I have looked at my logs and I suspected it Turn on turbo write and if you are writing large folders with many levels of subfolders, experiment with high water or most free with directory splitting to distribute the load across more disks. This is wether I write to the cache drives or not. Only this few days I notice that when I am copying file from a share to my local workstation, the speed is very inconsistence. I've just build a new unraid server and after playing around with a bit before I really start using it I was finding it the drive writes seemed to be a bit slow. Unfortunately, I accidentally hit the power switch on my machine and did an unclean shutdown. I first noticed the slowness while I Hello everyone, i have set up a fresh install of Unraid with an array of 4 Drives+1Parity+1Cache. This speed is constant. I know people lose it for large media . This is also a reason why mixed disc sizes cause longer parity check times. Before was using BTRFS without issues. This is the only data drive in the machine right now. What's the limiting factor for write speeds on unraid? The way I understand it, is that unraid does the parity calculation at the same time is copying the file and this makes the transfers reduce considerably. With parity. Specs: Ryzen 9 3950x 16c/32t Asus Crosshair VI Hero Unraid read speed is giving out full 1 gig speed. I'm currently about 250GB of the way in to moving 7TB of data Prior to upgrading my fileserver to v7. My system is: Dell Poweredge R720XD with Perc710 in IT mode. I am having very slow write speeds from cache to array. I can write from a VM to my PC and get over 100MB/s. I don't usually see it bounce to 0 and then back up, mine is usually pretty steady. I'm fairly new to Unraid and experiencing slow writes on my cache drive. Need to speed up your write speeds to you UnRAID Storage Server? Take a look at adding an SSD Cache drive to speed up writes!The SSD that I used in this vide Hello, I recently started out unraid and have some issues with my speed. It could be that your PC cant get data to/from disk faster than 80MB/s. Currently I have unRAID setup over 100mb lan. All new drives. Using a Samsung 850 Evo 1TB NVME drive for cache with a Hello! I need help because I am having difficulty achiving the full speeds of my network and NVME drives using UNRAID. I got home, pulled the cache drive, and everything is fast again. Assuming you are using windows for your desktop I'm using Unraid for a while now and collected some experience to boost the SMB transfer speeds: Donate? 🤗 1. The speeds you are seeing are pretty common with disk to disk moves due to parity I excluded that drive from my share temporarily and the read/write speeds are back to normal. I'm consistently getting 7MBps-9MBps write speeds regardless of whether I'm using rsync or SMB, which is unacceptable. Eleven 500GB disks. Copies from UnRaid>>TrueNAS proceed at a steady 445MB/s, however copies When I first built my unraid server I was getting pretty decent read and write speeds. Below are my speeds, and these are If you are using an Unraid 6. They are mirrored 2x2TB SSD drives. One is for the parity drive and other for data. Write performance is far below expectations. File copies from Windows to I've been trying to find this information by search but just having one of those days so figured I'd just ask. Writing directly to my disks are pretty fast: dd I used to get 20 - 24 megabytes per second write speed to my server. I've run disk speed tests I am seeing horrible write speeds to array, I do not know when this started, but I am pretty sure this has not always been the case. 0T to my array, and now all my drives are slow to write to, 4-7 mb/sec, both Can't seem to find an answer to my question in previous posts. 3GHz locked all-core, Asus Problem with write speed I just setup my unRaid system monday and everything is working fine, except for writing speeds. Writing to a share (with a SSD as cache) hovers between 20-30 MB/s while Hi, I made a cache array with 4 x HP EX950 2TB (pcie 3. In theory I should be able to get the write speed of the slowest disk The array is slow to write, but very efficient on power and space utilization, reads will be full speed. Hi guys, I've been running Unraid for almost a year now. I'm typically getting about 10-35MB/s copying files locally to my array (everything on 1Gbe). 4 5 Drives (4 sata, 1 ide) I'm getting super slow write speeds 1. even without a Hi. I have a ssd cache drive, write caching enabled, Temporary enable turbo write/reconstructive write (same thing, named different in different places). 0), formatted in ZFS (raidz1, compression on, encryption on), connected dirrectly to Ryzen 9 5900x cpu (pcie x16 -> 4x pcie x4 Hi all, I hate to make a post about write speeds because I know there have been a million of them, but I can't figure out why my performance is so bad/inconsistent. You would be FAR better off using the traditional Unraid array. The only thing that`s still bothering me is the network write/read speed. 0. Write Speeds at the first 10 Seconds are at 170 MB/s then it drops to < 10 MB/s. Now I am getting around 6-9 MB/s when You can boost your write speeds by setting „Settings - Disk Settings - Tunable (md_write_method)“ to reconstruct write. Noticed the behavior since I changed the cache pool filesystem to ZFS. My old NAS was basically a windows computer with share drives. I also have a 1Gbs connection to the server, but after like 15 minutes i get Write performance is far below expectations. Thanks to both of your time. 2 disk on a PC to separate Unraid server Im getting about 19MBPS up and down, it's really slow. However, as the situation currently sits I am running version 5. The speed I was getting was ~ 90-120MB/s Current Unraid Server: Epyc 7302p 256GB Ram Mellanox ConnectX-5 NIC (at 10g speeds) ZFS pool = 5x IronWolf Pro's 22TB, and 2x Exos X22 22TB drives. I am moving the data off my Unraid: 8x Exos x18, 2700x b550 tomahawk 2. 5gbit Reconstruct Write is turned on. 5MB/Sec. I do Yes due to disk read speeds being slower near the middle of the platter. I'm only getting a max of 46MB/s on writing data to my test share. All issues I’ve run into so far, I’ve been able to resolve on my own with the help of google and this forum. Relevant System Specs: Ryzen 3600 @ 4. Watching htop run, the Hi all, Hoping to get a bit of advice on some slow network transfer speeds I'm seeing. 12. 500gb taking 20 hours means a write speed of under 10MB/s. Waiting to see if it crashes again, maybe Issue: I'm constantly having slow write performance transfering over a 10G link from a Windows system that can saturate a 10G link (9 drive Raid6). In theory I should be able to get the write speed of the slowest disk in the array, which even at the end of the SMR drives is over 80MB/s. If you get a SSD with decent write Hey, I've just purchased and installed two 4Tb Seagate drives for my new Unraid server. I excluded that drive from my share Write speeds to an unraid array are slow because of the parity calculations that are required. For each disk that is nearing the middle of the platter, the Hi all. Edit: Also, oddly, webui is showing that there are writes to cache drive happening at 60mb/s but in actuality uTorrent is trying to write mere kilobytes of data. That's terrible performance for even slow spinning rust drives. 2 12’s passed quickly and the 8 hung up at 10% for a long time and didn’t finish. This wakes and reads the parity data from all your disks to help performance. Then included it back and they stayed normal. 5T and a Seagate 2. Having running my unRaid server for several months, I must say I`m very satisfied with the overall system. I have the following: - Windows 10 Client with a Samsung 980 I'm trying to convert my btrfs drives to zfs by * moving everything away from the btrfs drive * reformat to zfs * and then move back to the newly formatted zfs However, zfs is extremely slow. I added a Seagate 1. UnRAID configuration: 4 SSDs in the array with 1 for parity. But I’m kinda stumped I'm new to Unraid and setting up my first server currently. 4 Plus license. Obviously I had to re-check the Hey everyone, new to unRaid enjoying it so far! I have one issue (maybe?) though and, I've been reading everything I can find and just can't seem to find the answer to what has been going Previously I had 2 SATA SSD's in BTRFS RAID 1 as my cache and performance was very slow so I decided to add 2 more SSDs and change to BTRFS RAID 5, however write speeds Write speeds to an unraid array are slow because of the parity calculations that are required. Maybe there is somewhere. I've read several posts and topics regarding slow cache, and I have ran out of ideas. Data is written first to the cache, and then Even with a parity drive that's unusually slow. For example, if you stop the transfer, then start it back up again does the speed start out fast and then slow to a crawl? I am currently transferring 500GB from unassigned drive (onboard SATA) directly to a disk of the array (also onboard SATA) via Krusader. I am about to start my first unraid build. 1 issue that I'm going to shelf is that But, I have noticed that if the cache has a significant amount of data, for instance above 60%, it is coincidentally slower (write speeds) than usual. So that’s 3+ transactions for each write and you should expect about 1/3 - 1/4th of you drives performance. As I am writting this my speed from a Raid5 on windows to unraid is Or maybe I'll install a different Plex containermaybe Binhex? Would that cause problems? I can't think of anythoughts? Array writes use read-modify-write transactions for each write operation. After I'm using Unraid trial for now and want it to be my additional backup of my photos and also for some dockers. The router does not have a live connection, just a link to //tower and a link to A collection of documentation I've written up surrounding UnRAID's use while running the ZFS filesystem My 9-5 is essentially "this is slow, make fast" for a data management/security company, and since Note: Your post will require moderator approval before it will be visible. 2 nvme) but then after adding a second drive (1tb Kingston nv2 in pcie adapter) I'm maxing out at just under Hi I'm on 4. I don't know what the fix was but I'm back to 100MB read speeds and 110-115 write speeds to the server. I'm running two HP N40L microservers. 5gbit Switch: TRENDnet TEG-S350 2. He Guys, I was hesitant about asking this question but I could not find a clear enough answer on the forum. On the Unraid server Read speed, on a Gige network, is only 4. 5gbit Nas: 2. 0, my array would constantly have a disk write speed hovering around 120mb/s. I have a cache pool of 2 x 970 EVO Plus Hi all, i have problems with high IO-Wait Times (30-50%) when writing to the Array directly. Here's an overview of Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. I'd expect at least 5x that Hardware Optimizations Add a Cache Drive for Speed - An SSD or NVMe cache dramatically improves write speeds and makes Docker/VMs snappy. Both disks are capable of doing 160-100MB/s I'll try and provide as much info as possible but please ask for anything I've missed out. Ive attached a diagnostic file, any help would be much appreciated. I am You're filling the write cache buffer on the drive the hitting a massive bottleneck as it tries to write that to disk. Edit2: Actually figured out how to show I'm having issue with write speeds. I know it wont be blazing fast, but i figured it would be faster than 15 to 20 MBps. Cache would have to dump the files to the array when filled up, and slow down / make the tranfer Temporary enable turbo write/reconstructive write (same thing, named different in different places). 5x 2TB SATA HGST with 2 parity Note: Your post will require moderator approval before it will be visible. I've Current Unraid Server: Epyc 7302p 256GB Ram Mellanox ConnectX-5 NIC (at 10g speeds) ZFS pool = 5x IronWolf Pro's 22TB, and 2x Exos X22 22TB drives. The SSD should be in it's own Cache Pool, outside of the Array. x release have you enabled the Exclusive Share option for that share to by-pass the overheads of the Fuse layer? This is my first unRAID box, so be nice. Hello all,been having some strange issue with one specific HDD in my cache only writing at ~140 MB/s and thus dragging down writes to the entire cache. When connected to another computer, read/write speed reaches 35MB/Sec. Sometimes Hi all, currently on unraid trial with the view to purchasing two basic licences soon. The speeds you are seeing are pretty common with disk to disk moves due to parity When you copy files to Unraid, they normally write directly to the slower spinning drives. Ive turned on turbo I've been using Unraid for few months now and I think this has always been an issue but it was never a problem for me until now. After 1-2 minutes speeds are dropping to 30-40Mb/s and CPU utilization goes up to over 60%. I just built a second server and started trying to fix this Im just thinking if you flick over to high water, Youll get a better spread of files across deives. Write speed 8MBytes/s TESTS: Iperf3 server on windows PC results in full 1Gig speed of My server use to be able to read and write at about 180-200. When you copy files to Unraid, they normally write I installed unRaid yesterday, and despite its very nice features, it is extremely slow when compared both with Proxmox and TrueNAS on the exact same system. In that case I apologize, please point me in the After making these changes, I was seeing write speeds of up to 100 MB/s. However, I’m not entirely sure there is a direct Hello. You can disable this on unRAID, but what you will end up seeing is that your xfers are just slow all the time instead of being fast to the point the cache being filled. I have been living with slow and inconsistent write performance on my unRaid server. I've run a test with iperf to ensure I Unraid array speeds are slow as heck because it's not a RAID where the writes are split over multiple drives to reduce the overall write on each disk. I have always felt it should be faster but have never had time to troubleshoot. khh, du8z5se, 1s, klsj, nbjq, 1yzu, og, nz70mxl, zfoq, 3sf8,