On 21/09/19 10:19, Liviu Petcu wrote: > Yes. Only one of the 2 disks reported by mdadm as failed, is broken. I > almost finished making images of all the discs, and for the second "failed" > disc ddrescue reported error-free copying. I intend to use the images to > recreate the array. I haven't done this before, but I hope I can handle > it... Could be that failure that knocked the other drive out of the array too. Dunno why it should happen with SATA, they're supposedly independent, but certainly with the old PATA disks in pairs, a problem with one drive could affect the other. Cheers, wol