I had a power failure and my LSI MegaRaid 3 disk SAS RAID 0 failed. My attempts to recover the RAID have also failed.
I plan to rebuild the array and go with RAID 5 and add another SAS disk.
However, before I wipe the drives I would like to image each of them separately.
I tried to boot up using a Linux live boot CD. I can boot up but I can't see my drives. I tried just one drive plugged in and booting but the drive can't be seen so I can't call the imaging command.
I'm assuming since the MegaRaid SAS controller says that the virtual drive is bad, then it will never mount.
I tried to find a SAS to USB cable online so I could just plug in each drive and image them but I can't find such a product.
I thought maybe I could use the MegaRaid controller with one drive plugged in and set it as a new Raid 0 so I could get it to mount. However, it seems to want to call the initialize command and want to wipe the drive. Losing the Raid tables for the original Raid wouldn't be a problem, but I don't want the data to be erased.
Any suggestions on how I could image each drive?
------ UPDATE --------
Correct there was no redundancy, it was a bad setup. There was a power outage and when then the RAID failed to boot. SAS controller status said its "Offline", one drive says "Bad" and the other two are "Good". I tried to "Make Good" and "Put Online" the Bad drive and it turns green and the virtual drive says Good and Online. However, whenever I try to boot again I get the same error, RAID starts to beep and the drive says "Bad". Not sure what other options I have to resolve it. I assume the RAID table / controller data was compromised.
I would still like to image the drives individually. There are some programs that can attempt to recover the data by passing the drive images, setting the stripe size and then analyzing the data. However I have no idea how people are getting the individual drive images.
I understand I can't mount the array of disks but I was hoping I could mount them one at a time. Perhaps connect just one and set it as a RAID 0, but I can't figure out how to do this without erasing the contents of the drive. If I lose the RAID table data then that would be ok.
JBOD or some kind of "pass through" option would be exactly what I need. Disabling the RAID and just mounting a single drive.
I looked through my controller options but did not see any option like that. I have emailed the manufacturer asking about this but it doesn't look like it supports it so far.
Please let me know if you have any other thoughts.