Array migration from Tasksmart N2400 to Nas b3000

[Vincon Daniele]

Hi!!!
it's possible to migrate 2 array (raid 5) from old Tasksmart N2400 to new NAS B3000 without loss of data??

Thank's

Daniele

[Kevin Harlan]

You could try the "DAS to SAN" method (plugging the drives directly into the MSA).

You could also migrate in other ways as well (i.e. backup and restore, copy over the wire, etc.)

I would advise you to make sure you have a known good backup prior to attempting any data migration. That way, just in case something goes wrong, you haven't lost your data and aren't dead in the water.

[Stuart Whitby]

Shouldn't be any problem at all - just dd or tar the data over from one to the other. Either of these methods will maintain file ownerships and permissions. The problem that you *will* have is that the filesystems will need to be either offline or read only before you start copying them. Otherwise, you're going to end up with data which changes after it's been copied and is lost when you bring up the new filesystem.

Alternatively, you may be faster doing a full backup of the existing filesystem, recover it to the new one, then mark it read only and do an incremental backup and recover to the new box. Just depends how often it changes and how much downtime you can afford.

Probably a bit late for this one, but if you get a Celerra, then you can use this as a pass-through to the original data while it copies the data over.

I've got no idea about the B3000, but if you can assign an IP address to it, then I'd recommend using the same IP as the retired NAS box and taking that one offline. That way, you don't need to update your mount points.

Hmm. Another thing which *may* be possible is to set up the new box as a mirror of the first. Sync the mirrors, then break off your original filesystem. No idea how to implement this, but it's something to think about :)

HTH,

Stuart.