Snapserver 4400 - Raid failed

[mrwobbly]

I have a Snapserver in one of my primary schools where the raid has failed. Any suggestions for getting the data off it?

 

I can log on to the web interface. Its raid5 (checksummed). 4 disks and the console shows the status for each drive as ok but the raid status says failed. The event log shows multiple lines of

 

Raid5: failed to run raid set md0

 

Any help would be gratefully received.

[aggie]

If the SnapServer 4400 is a Linux box (sounding like it with references to md0)

 

Linux CD - and some mdadm --assemble might do the trick? (Gentoo Minimal CD usually has mdadm on it)

 

Use fdisk -l against each should give you a clue as to what partition (e.g. /dev/sda1 /dev/sdb1) - they should all be the same size and hopefully of type 'fd'

 

Command will look something like

 

mdadm --assemble /dev/md? /dev/sda? /dev/sdb? /dev/sdc?

 

If one has failed you only need n-1 discs for RAID 5 to assemble (so if it's three disks then 2) I think you can use the word missing to replace on of the partitions

[plexer]

You could try the following to smash the array back together if the above fails:

 

mdadm --assemble --force /dev/md? /dev/sda? /dev/sdb? /dev/sdc?

 

Ben