ctviggen

Thanks! Using your guidance, I learned I have 4 Seagate BarraCuda drives, ST8000DM004-2CX188, 5400 rpm, 256 mb cache, which are SMR according to their website. Maybe I get the CMR drive and use that as the parity, and just leave my current spare as a spare. Will order the CMR drive and I'll decide what to do once I get time to add and remove a drive.

Thanks a ton for that. The $180 drive at Amazon is a CMR drive according to this article: CMR versus SMR article When I built this particular unraid server, I used 4 8TB drives, all from the same external drives from Costco. So, when I go into the machine, I'll see what they are. I would not doubt they are cheaper drives. I'll consider slowly upgrading. Thanks again.

Thank you. I will buy a new "drive" then and make my hot spare into the parity drive. What's the best way to do this? I used to buy external drives and "cut" them out of the case ($160): External hard drive Looks like Amazon has internal hard drives anywhere from $110 (Seagate BarraCuda, 5400rpm, 256mb cache) to $130 (WD blue, 5460rpm, 256mb cache) to $180 (Seagate IronWolf 7200rpm, 256Mb cache). When I started, I remember always buying WD Blue, but then I thought they fell out of favor, and when I set up this system, the external drives were cheapest. Any recommendations on what to buy?

Hi all, How concerned should I be about 187, Reported uncorrect error on parity drive (only 1 of them)? Wait till the drive starts having multiple ones of these? Or consider changing the parity drive sooner rather than later? I have a "hot spare" waiting, but if I have to replace a drive, I'd like to get another one just in case.

By the way, by "new installation", I mean really new. New hardware, new everything. Running basically nothing, the only apps are binhex-minidlna (used for my HD Homerun system, which records TV), and community applications. That's it. I took down all computers in the house, the HD homerun, and my HT computer. By "took down", I mean unplugged if I had to or shutdown if it was a computer. As far as I could tell, nothing was connected to the unraid server. I did have one computer running to run the web interface, but that's all that was running. The new server is in its new location, and it's running a parity check, which will take 15 or so hours I think. So, I can't attempt to shut it down until tomorrow.

I know this is an old thread, but I had the same problem today. A new installation, but still I could not shutdown through the web interface. I had to put on my monitor and keyboard and use "powerdown". I had stopped anything I thought might be accessing the server prior to this. Is there anyway to determine why I can't unmount?

This also worked for me. I had an 8TB drive connected as cache, but wanted that as a spare. I already had a 256GB M.2 drive that was free. I bought a 256MB SSD drive so that I could use RAID1 for the cache, and keep the 8TB drive as a spare. I powered down the array, configured everything in hardware, brought the system back up and configured the two SSD drives as a cache pool. Got the same error for the two cache drives: too many missing/misplace drives. (Not sure whether this was caused by the new SSD was not formatted - the M.2 was formatted for cache, as I had used it previously for cache.) I did not have any dockers/VMS. I stopped the array, removed the two SSDs from cache so there was no cache/pool, then started everything. Stopped the array, added back in the two SSDs in the cache/pool, then restarted the array. This worked.

Does marking this as "solved" mean all of this is solved? Or only part of it? @itimpi solved two parts of my issue, but I still have questions as to how to copy files and also whether to rename my 4th 8TB drive (meant for a hot spare) as a temporary cache while copying.

Oops...Answered part of the cache. Now it's called a "pool" instead of a cache. Learned that here: Getting Started Still have the question about whether to use the 4th 8TB as a cache/pool when copying files.

I just brought up a new server, with four 8 TB drives and 1 256GB SSD meant for cache. This is to replace my aging (as in really old) unraid server. I need to copy >10TB from the old server to the new server. At end of copying, I would like: one 8TB parity drive; two 8TB data drives; one 8TB "hot spare"; 256 GB SSD cache. Questions: - Cache: Looking at the page for Main/Array devices, there is no cache option. Did the cache go away? - Rename server: How do I rename the server? (Did this on my current server, but it's been 10+ years since I've done it.) - How do I copy >10TB of files from my old server to my new server? If there is still a cache drive, should I make the fourth 8TB drive be a cache drive temporarily (will be a hot spare) to allow a lot of a copying to happen before the cache is written to the array? Thank you.

I'm setting up a new server to replace my really old server. I bought this motherboard: ASRock Rack E3C246D4U Micro ATX Server Motherboard LGA 1151 Intel C246: AsRock motherboard I was under a heavy time constraint, and bought ONE SIMM of this memory: Crucial Technology 16GB 288-Pin EUDIMM DDR4 (PC4-19200) Server Memory Module, CL=17, Unbuffered, 2400 MT/S Speed, ECC, 1.2V, 2048Meg x 72, Dual Rank, x8 Based I did not think about using dual-channel memory, which requires TWO SIMMs. For an unraid server where I use this (currently) for a NAS only, should I buy another SIMM to enable dual-channel support? I put the motherboard into a rack-mounted case: Rosewill case There are two large fans in front of and blowing air over the 3.5 inch drives (I'll have 4 drives, can add 8), and two smaller fans at the back of the case, extracting air from the case. There are two speed-controlled fan connections on the motherboard. The current fans will not connect to these and instead connect directly to the power supply. This means they run at only one speed. Should I buy fans that can be controlled by using the connections on the motherboard? If so, which fans should I control (2 large front, 2 small back, or both), and is there such thing as a fan splitter that can control 2 fans? By the way, I have started other threads and have not been able to get back to them. This is because my mother was in and out of the hospital, and I had no time to do anything. This also caused me to not take enough time when ordering memory to think about dual channel memory. Unfortunately, my mother passed away. But that now means I have enough time to put this server together.

I am getting a new unraid system to replace my aging system. I currently use my system mainly as a NAS. Don't really do anything with it other than that, yet. My do so in the future. Bought a case to put in a rack. Bought a 650W power supply. Have three 8TB drives to use, gives me 16TB data, one parity drive. This is 1TB more than my current system, which still has 5TB+ free. (And with things like Disney+, I tend to be adding less to the server, not more.) Thinking of this motherboard: AsRock Rack E3C246D4U Micro ATX Server Motherboard This processor: Intel Xeon E-2146G Coffee Lake 3.5 GHz LGA 1151 80W Does this seem reasonable? Thinking of ECC memory, but the choices are overwhelming. This supports "Dual channel DDR4 2666/2400 ECC". Any recommendations? (One issue when I go to Newegg is there appears to be multiple versions of, e.g., 2666 memories. Other issues are wide ranging prices, different manufacturers, etc. Also, how much memory do I need?) For a cache drive, do I "need" an SSD? If so, how big? Thank you.

Sorry, I had a birthday party for my daughter, then had to take my mother to the hospital the next day, then work started. Unraid is still giving me errors, saying that there is something stuck. To which file are you referring? The log file? Does there need to be an immediate error (for instance, running the web interface, I had no message this morning, but did last night). If I want to remove the cache and replace the drive, do I: 1) take system offline 2) remove the cache from the sysem 3) remove the drive from the system 4) add the former cache drive as the disk that I just removed Or are there other steps, such as reformatting the cache drive (formatted in btrfs) to xfs? Thank you.

During this month's parity check a disk started giving errors: The system says that parity is valid, but there were 108 errors on Disk 2. I have a total of 6 data drives. Never had errors on any disk before. I have a "hot" spare that I'm using as cache, same size. Should I replace Disk 2 with the spare? Or do more debugging/wait for a while? Thank you.

I realize this thread is a bit old, but I like this list of parts, and I'm thinking IPMI would be nice to have. I'm trying to build a rack-mounted server to replace my aging, massive 9-drive server. I have 3 8TB drives ready to go (gives me the same storage capacity I have now). I currently use my unraid server simply as NAS. Given more time in the future, I may implement more though. Just to clarify, to get IPMI and ECC, I need the AsRock Rack E3C246D2I? Is ECC critical or just nice to have? If I start with 3 8-TB drives and the other list of parts, what size power supply do I need? Do I use a cache drive that's SSD? (At one time, this was overkill, but I think this may have changed.) By the way, trying to find stuff now is complicated. I settle on a rack-mount computer case, for instance, and either it's out of stock or ships in months. There's a limited selection of in-stock. And parts prices are all over the map. Sometimes cheaper on Amazon, sometimes unavailable, but on NewEgg, or just cheaper on NewEgg. Sometimes other websites suggested here are cheaper (but I have never dealt with them). Makes it quite time-consuming.