November 5, 20241 yr I have a computer with five Nvme 4TB drives no spinning disks (MinusForum MS-01 computer with PCIe 3.1 x8 ASM2812 to 2 port M.2 SSD Adapter). I setup Unraid (v7 beta 4) on this computer using one drive for parity and the other four in a ZFS array. I have read in the manual that a problem can happen with TRIM. Can I use the computer setup this way or will I run into a problem. Will the TRIM create a problem? If so can someone tell me how to setup a computer that has only Nvme (5) drives?
November 6, 20241 yr You should have set up the ZFS Array with ALL drives as one big ZFS Raid pool (RAIDZ). RAIDZ manages its own parity, no extra drive is needed (indeed, it is slowing down everything because ZFS does not know about it and therefor does not care about it doing its internal "optimizations"). RAIDZ is not that flexible, you cannot add a drive without destroying the existing Array first. Hopefully, you have no data on it yet? Set the number of array disks to 0 then, "start" the array. ZFS will take care of trim by itself. (This will only work for Unraid 7 upwards) (I'm no friend of ZFS, so use it with your own risk) Edited November 6, 20241 yr by MAM59
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