Linux Software RAID (
md) has a support for some of hardware RAIDs superblocks,
-e ddf Use the "Industry Standard" DDF (Disk Data Format) format defined by SNIA.
If 3ware's metadata format is not supported when you plug the disks into usual SATA ports all data they have should be accessible to the system.
Since it's RAID-1 you aren't at a huge risk when trying but the real safe side is having backups first anyways.
A few different RAID-1 "jumpstart procedures" can be applied:
- you create an
md device using a single disk and
empty another — that would give you LSR superblock applied then you could just add the second disk onto "empty" slot.
- Or, you could start basically with both disks at once using
--assume-clean when creating it.
Middle risk approach is using 3 disks for this procedure — if you have a 3rd blank one just use it for procedure 1 adding second disk. That way you always have a full copy of your data on second replica of HW RAID array which isn't touched by any operation.