Infotrend server recovery

Work is progressing slowly on our recent Infotrend server recovery with 12 x 1TB drives - massive!  The RAID is an Eonstor A12F-G2422. 

This RAID had just one logical drive configured, being RAID5 using all 12 disks with no information on stripe size.  The RAID was attached to a Linux server, with an XFS filesystem. 2 of the disks were very badly damaged and not repairable.  This has been running for three weeks, but we are now having some success!