and, if you inquire in the right places, there is law enforcement
focused forensic analysis software specifically designed to acquire RAID
volumes and rebuild the data.
Steve
On 3/26/24 9:48 AM, Paul Koning via cctalk wrote:
On Mar 26, 2024, at 10:08 AM, Bill Gunshannon via cctalk<[email protected]>
wrote:
On 3/26/2024 9:15 AM, Paul Koning wrote:
On Mar 26, 2024, at 8:57 AM, Bill Gunshannon via cctalk<[email protected]>
wrote:
...
Do you have just part of the RAID set, or enough disks to make a complete one?
Don't know, but doubt it. Some of the disks have probably been used
for other purposes since the VAXen went away more than 20 years ago.
If the latter then it's a matter of reverse engineering the RAID layout, which
is likely to be doable.
While possible, I think hardly likely. I don't even remember what the
appliance was. Something DECish.
Chances are those were classic RAID systems, with fixed layouts across much of the RAID
set (not "mapped RAID") exposing what looks like a regular device LUN (no page
based virtualization). If so, there is only a limited set of possibilities, basically a
question of stripe sizes, drive count, and drive order. Given a guess (or better) of
what's on it, such as what file system type, the right layout would be clear from the
fact that it produces valid content.
It would be a pain to try this with modern complex SAN devices, but with those
of 30+ years ago it's not quite so bad.
paul
