DerInternets Posted July 19, 2020 Share Posted July 19, 2020 (edited) Cheers everyone, I am currently in the process of setting up a new homeserver as my Synology 218j did just not have the storage space and power that i needed. Current Hardware: Asrock J4105 mini-itx board 8 GB Ram 4x 8TB WD Red as the array, connected to the onboard-sata controllers (one is the processors intel one, the other one's a on-board ASMedia ASM1061). 2x 1TB 2,5" 5400 Disks that i'd like to use as either cache or unassigned disks for my dockers, vms and such as they don't consume a lot of power and are a lot less noisy that the big reds. Those are running of of a cheap chinese marvell 88SE9125 pci-e sata-controller. Network connection is established via the onboard controller (Gbit lan) plus another usb gbit lan adapter (for shit's and giggles, i don't expect the system to saturate 2 gbit-ports and i don't need it to). Currently, the 2 2,5" disks configured as a cache pool, balance is set to raid 0 (for max. speed, more on that in a sec.). The WD Reds are more or less empty, parity has been calculated (after the 3rd try - thx to badly shielded sata cables). So far, setting up the system was great, everything was easy to understand, (almost) no fiddling around with config files and such. But: My write speeds are hopeless. I am aware that this is unraid's great weakness, but I am getting between 5 and 15 Megabytes/sec out of the damn thing. Here's what i've tried/checked already: - Activated "turbo-writes" aka reconstruct write - no change in speeds - Activated and deactivated caching (cache yes, cache no, disabling the cache disks completely) for the share i am writing to (currently that's the appdata share) - no change in speeds - switched cache pool from auto to raid 0 (more out of desparation, because i really don't want my cache to be susceptible for data loss) to no avail. - I've checked hdparm and all disks have write-caching enabled. - Unplugged the 2nd LAN-adapter - nothing. I've tested transfer speeds by writing to an smb share from a windows machine, also connected via Gbit-LAN. Any tips? I'd really like to use UNRAID instead of OMV or ubuntu (tested both, not as nice as unraid), but transferring my 5 TB of data to the array at those speeds would take me 2 whole Weeks. Not gonna happen - Help! Edited July 19, 2020 by DerInternets Quote Link to comment
itimpi Posted July 19, 2020 Share Posted July 19, 2020 It might be worth posting your system’s diagnostics zip file (obtained via Tools -> Diagnostics) attached to your next post to see if we can spot anything that springs out. 1 Quote Link to comment
DerInternets Posted July 19, 2020 Author Share Posted July 19, 2020 I knew I forgot something node-diagnostics-20200719-2036.zip Quote Link to comment
DerInternets Posted July 19, 2020 Author Share Posted July 19, 2020 For whatever reason my Server just descided that it is able to do things more quickly - after several hours of one to two-digit transfer speeds it now delivers roughly a 100 Megabytes / sec when writing directly to the array. I have no idea what the problem was but it seems that it solved itself. I will now revert back to raid 1 for the cache drives, restart and then transfer all my media to the array. Fingers crossed the first 2 TB will be transferred by midnight. Quote Link to comment
trurl Posted July 19, 2020 Share Posted July 19, 2020 54 minutes ago, DerInternets said: will now revert back to raid 1 for the cache drives, restart and then transfer all my media to the array. Fingers crossed the first 2 TB will be transferred by midnight. Don't cache the initial data load. 1 Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.