Good morning,

[Please trim replies, and avoid top-posting]

On 09/23/2013 01:15 AM, P Agenbag wrote:

Hi Phil

Below, please find the output of the mdadm --examine on the 4 drive's
second partitions. Apologies for omitting that in the first e-mail.

Appreciate your help.

[trim /]

So it appears /dev/sd[abc]2 all dropped out together, leaving sdd2 by
itself.  As such, you should be able to force assembly and carry on.

mdadm -Af /dev/md1 /dev/sd[abcd]2

Then you can take a backup of the critical contents, if necessary.  (You
haven't said how important the data is...)

Phil