Hi All,

This afternoon I heard a disk ticking, like it can't move the read head.

I have a spare disk here so I shutdown the system to replace the disk, but now i have 2 red x's. I replaced the failing disk.

TOSHIBA_HDWD110_21FZRNBNS with a Lexar_SSD_NS100_TB

See screenshot, would love to know what the best way to proceed is, I don't the array will be able to be rebuilt with 2 failed disks?

Stopped. Invalid configuration.

tower-diagnostics-20251022-1648.zip

Edited October 22, 2025Oct 22 by Spud

I think i found my mistake, the TOSHIBA_HDWD110_21FZRNBNS was not the failing drive, at least... not the only one.

Disk 1 was the one with the noises. So i reattached the TOSHIBA_HDWD110_21FZRNBNS disk and replaced Disk 1 with the Lexar ssd, it's now rebuilding.

Running to the store to get a replacement for disk 3. as it was also giving errors.

Sorry for the inconvenience. Hope it helps for someone else.

Kind regards,

Spud

So while it was rebuilding disk 1, disk 3 seems to have left the chat.

It started giving errors while it was at the end of the rebuilding process of disk 1. During that time also the Parity disk seem to have a spin retry count "warning".

Is this also the end of the Parity disk?

I ordered another drive to replace the now failing disk 3. I hope I can stop the array, add the new disk and start rebuilding tomorrow. And fingers crossed the Parity disk also doesn't really fail.

Attached the latest diagnostics, in case someone wants to chip in.

Kind regards,

Spud

tower-diagnostics-20251022-2051.zip

Disk3 dropped offline, this is most often a power connection issue. Note that the rebuilt disk will likely have some corruption.