Q: Urgent Help Needed - Can Pay Engineer

We have an Xsan system here (V.1.4) consisting of a Mac server
connected to 3 Infortrend storage arrays via fibre and an ethernet
metadata connection. One of the arrays (they are split into 2
infortrends striped as a 10TB RAID 5 and the remaining one of 1.5TB
RAID 5 and that also runs the metadata) failed as the result of a
power cut. The company who service and supply the system were unable
to re-mount the volume that failed (1 still functions normally) We
called in a data recovery company who although have secured all the
data on the disk to within 4 bytes have been unable to get the Xsan
software to recognise the volume and so we are still in a similar
situation as to when we started several thousand £'s and a month down the road later. We can confirm low level data integrity below the Xsan file system.

What we need is an engineer who knows Xsan inside out and can 'force'
the Xsan software to see the volume and allow us to recover the data
in it's native form. The issue we have (I believe) is that as part of
re-building the array the recovery engineers have had to rename the
logical drive and we believe it's that that is causing the problem.
Everything else seems to be in place with the relevant volumes, LUN's
and storage pools in place and seen but just without the volume
mounting.

Can you help or do you know someone who can? We can't believe that
this has never happened before yet we have found it almost impossible
to track someone down who knows about the Xsan software other than
just basic administration.

We are totally desperate to get this working again ASAP and can pay the right person to fix it. We are a London based education establishment.

Many thanks.

K.