Kelsenellenelvial

With the new option of having multiple pools, i set up a pool with a single HDD and set my Time Machine share to HDDPool only. This seems to have solved the performance issues for me, though i've also said that before and had the speeds drop over time so I'll try to keep an eye on it over the next few weeks. I wonder if there's something about the way sparse bundles are managed that causes TM to do a lot of random reads/writes that trashes performance on things like arrays, particularly with simultaneous access as opposed to having a single dedicated disk as a target like with the Time Capsule. Seems like people tend to get good speeds for initial backups and they drop off over time, so maybe fragmentation of the sparsebundle is an issue too?

Seems like i'm still having issues, the other day I let a large backup run overnight and it backed up something like 8 GB over 10 hours. Something that may or may not be relevant is in the Open Files plugin I'm seeing there's always a few dozen files listed as being open from each of my BackupBundles, and in the Main Tab, I can often see the disk being accessed(in the few hundred KB/s read/write range) even when Time Machine isn't currently running. Opened a ticket with Apple Support, I'm wondering if some of the performance issue is the disk thrashing due to both my Macs accessing it at the same time.

Found another thread that might be relevant. Updated all my TM backups to be on the disk share instead of the user share, disabled hardlinks, and set Case sensitive to yes. Seems like SMB has trouble with folders that have thousands of files, like a Sparsebundle. My CrashPlan docker that backs up the TM share is running a lot faster. Waiting to see how TM backups run.

I've converted one of my Macs to backup(same backup set, just changed share and TM settings) using a disk share instead of a user share. Performance seems about the same as my last post, somewhere in the range of 10-15 min/GB.

Updated to 6.8.3 yesterday. Seems like a big improvement on my last backup from my MacBook Pro. Got through about 1.5 GB in about 20 minutes, which is still a bit slower than my Time Capsule backups. Disk activity is still very spiky, but has higher peaks, higher valleys, and seems to spend more time at the higher speeds. unraid-diagnostics-20200315-0605.zip

Here's another diagnostic, TM has been running about 3 hours from my MacBook Pro on Wi-Fi. 1.7 GB/8.2 GB complete. Running Black Magic Speed test to the same drive gets around 30 MB/s, speeds reported in the Main Tab in UnRaid fluctuate between 500 KB/s and 5 MB/s, more often on the lower end. My iStat menus graph looks pretty much like atlasalex's. unraid-diagnostics-20200229-1927.zip

I’m having the same issue, backup speeds are in the 0.1-2 MB/s range, they finish eventually but it’d be nice to have them be a bit quicker. My setup is a disk in the array that hosts two shares(previously one, added a second when I noticed slow backups) for TM backups, neither set to use cache. It’s not the array being used for anything else since it happens when the TM Share is the only disk spun up, I can read write other data to the disk at reasonable speeds(~50 MB/s), just Time Machine being slow. Those same computers are also backing up to a Time Capsule, which works as well as it ever has. One computer is on Ethernet, one Wi-Fi. 1.8 TB free on a 4 TB disk. I didn’t make the connection of them getting slow on v4.8, but that sounds like about the right timeframe. I’m interested to see how this works out.

Yes, but given that I’ve already got everything installed and running, I’m not looking to upgrade unless it’s significant. A bigger case that’s still 9 5.25” bays isn’t really worth the effort to me to have to move everything over, but if I could find one with 12 bays at a good price then I’d probably get one. I’m also in Canada so the e-bay selection is a little slimmer, and shipping a full tower from the US is more than I’d like to spend right now. Lots of other good suggestions in this thread and elsewhere, but all the cases that appeal to me are discontinued, and used models seem to not very available, I guess due to their appeal for people that are looking for those kinds of cases for NAS type builds. I’m currently at 9 3.5” drives, in one 5in3 and the stock 4in3 cages, plus a 2.5” cache SSD taped to the bottom of the case, so I’ve still got 2 empty 5.25” bays available which should last me a little while yet. Guess I’ll keep checking Facebook marketplace and hope someone want to get rid of a big, old case at a good price.

I’m kind of in the same boat. Lucked into a Coolermaster Centurion 590 when I was building my rig last year, everything fits but it’s pretty tight with the cables. Right now I’ve got a 5in3 and the stock 4in3 cage. I’m kind of okay with the internal cages rather than hot-swap, given the price difference, but I’d like a little more space, the back panel needs a hard shove to get it closed, and even my tiny hands have trouble getting everything plugged in, my last upgrade took a couple tries since I kept having SATA data and power cables come loose, or just not go in tight as I was getting them all connected. Something EATX size(just for space, not that I need an E-ATX board) with 12 optical bays would be perfect, or something with like 6 5.25” and a bunch more 3.5”/2.5” bays. I’ve seen a few locally, but always some major flaw like the HDD bays don’t have fan mounts, or there’s a solid cover over the 5.25” bays that would restrict airflow to my cage. Few that have lots of 3.5” bays, but not a 5.25” bay which I want for ripping media when I can. Server cases are just too big a price jump.

Just had this happen about a week after installing an MX500 as a cache drive. Guess it’s here to stay, at least I (and anyone else that finds this thread) know it’s an expected issue and not indicative of an early drive failure.

Just started using UnRaid a couple months ago because I was looking for something more budget friendly, configurable and higher performance, than off the shelf NAS units. It's also my first time building a PC. I was a little sceptical if it would be simple enough for me to manage, friends said they'd tried doing similar things with Linux and decided that the effort to configure and manage everything made them go back to off the shelf solutions. The support and encouragement I received from the UnRaid community, mostly r/UnRaid, has made the experience much easier than I was expecting. While I was originally just looking for NAS storage with redundancy, I've since got a Plex server running and offloaded uTorrent from my iMac to UnRaid. While I do find myself spending more time managing my server than I expected, it's because I keep finding new and exciting things I can use it for. Thanks to everybody who contributes to this wonderful software and it's amazing community.