February 8, 20251 yr I wanted to add another disk to my array as well as add a parity disk. not necessarly all at once. but i cannot get neither to work. Basically when i want to add another disk to the array (slot 5), the screen refreshes and jumps back to "unassigned". True for both new HDs in the system (sdb, sda). When i try to add one of these to parity, it will remove my slot 1 disk and i won't be able to re-add it to the array, while pushing my slot 1 disk to be a parity drive. the new ones will not slot in as partiy. i tried several reboots, i tried "new config" with preserve assignements. Did not help. logs are attached. many thanks in advance! powehi-diagnostics-20250209-0022.zip Edited February 8, 20251 yr by TurboPotato
February 9, 20251 yr Community Expert Both USB enclosures pass the same serial numbers for the disks, so you can only use one, Unraid requires a unique serial for all devices, it should work if you use one enclosure from a different brand/model, but note that USB is not recommended for the array or pools.
February 9, 20251 yr Author As per the GUI interface, the serial numbers are different for the Harddrives: new ones: Quote Device model:ST18000NE000-3G6101 Serial number:WVT108WE LU WWN device id:5 000c50 0fa3e104b old ones (18 TB) Quote Device model:ST18000NM003D-3DL103 Serial number:ZVT6CT6G LU WWN device id:5 000c50 074467169 or did you mean the same serial number for the USB enclosure itself?
February 9, 20251 yr Community Expert This is how Unraid sees the devices, only the last number is different for the devices from the same enclosure, 0:0, 0:1, 0:2, etc, and the other enclosure repeats the same 4 IDs: Feb 9 00:21:40 Powehi emhttpd: ST12000N_M0127_152D00539000-0:1 (sdd) 512 23440115664 Feb 9 00:21:40 Powehi emhttpd: ST12000N_M0127_152D00539000-0:2 (sde) 512 23440115664 Feb 9 00:21:40 Powehi emhttpd: ST18000N_E000-3G6101_152D00539000-0:1 (sdb) 512 35156656128 Feb 9 00:21:40 Powehi emhttpd: ST18000N_M003D-3DL103_152D00539000-0:3 (sdf) 512 35156656128 Feb 9 00:21:40 Powehi emhttpd: ST18000N_M003D-3DL103_152D00539000-0:0 (sdc) 512 35156656128 Feb 9 00:21:40 Powehi emhttpd: Patriot_M.2_P300_512GB_P300LBBA2402210261 (nvme0n1) 512 1000215216 Feb 9 00:21:40 Powehi emhttpd: ST18000N_E000-3G6101_152D00539000-0:0 (sda) 512 35156656128
February 9, 20251 yr Author That is a bummer. but i still don't get why it worked with the first enclosure in the first place. The 12TB drives are identical, as well as the old 18TB ones. Whats new is, that the new 18TB ones get assigned the same ID as the old 18TBs.
February 9, 20251 yr Community Expert 1 hour ago, TurboPotato said: but i still don't get why it worked with the first enclosure in the first place. Because they are different for the 4 disks: 2 hours ago, JorgeB said: only the last number is different for the devices from the same enclosure, 0:0, 0:1, 0:2, etc,
February 9, 20251 yr Author oh so you meant the 0:1 and 0:0. but isn't that just pure definition by the unraid OS? i can format those new drives without a problem and use them as JBOD... i've thought about this the whole morning and not being able to use USB enclosures dramatically increases now my expenses for this NAS. i run on a thin client for low power consumption but since USB is not genererally supported and the thin client does not expose eSATA or SATA i am.... fckd.
February 9, 20251 yr Community Expert 4 minutes ago, TurboPotato said: oh so you meant the 0:1 and 0:0. but isn't that just pure definition by the unraid OS? No, that's what the USB enclosure is showing as the serial numbers for the 4 devices: 152D00539000-0:0 152D00539000-0:1 152D00539000-0:2 152D00539000-0:3 Unraid accepts them since the last number is different, so they are unique, but the second enclosure tries to use the same exact 4 serials, so it fails.
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