>>>>> "Reindl" == Reindl Harald <h.reindl@xxxxxxxxxxxxx> writes: Reindl> Am 02.04.20 um 04:28 schrieb Adam Goryachev: >> Is there a method to determine if this is a HDD error (ie, 2 drives that >> have errors) or a cabling issue (with just these two drives) or some >> strange driver/motherboard issue? Reindl> just try by start with the cheapest option: cables Reindl> when nothing changes switch where they disks are connected and you will Reindl> find out it's the motherboard when suddenly one drive that was completly Reindl> fine before has the same issue >> I notice in the output below MD is showing a number of bad blocks on the >> drives, and logs suggest that the drives have run out of "spare" space >> to re-allocate these to. Reindl> from the moment on some software stack is telling you about Reindl> bad blocks on drives run fast and replace fast Hear hear! When the drive is saying it's not happy... go get some more now. I wouldn't even question the badblocks you're seeing, that means it's dying. John