Data Recovery and Disk Utilities Forum @R-TT

[quote=Alt post_id=14426 time=1519917494 user_id=59]
Are those disks or their images still with you? It's a rather important question.
[/quote]
Sorry...I didn't catch your response. But, yes they are still with me. Just finishing up the recovery now. Only wish that R-Studio would have an option to unselect skipped files during the copy process. It copied about 5TB of data to the destination when Windows decided to reboot. So, now after running another 14 days, my destination drive says that there is 1.04 TB of free space and R-Studio is saying that there is 5.92 TB left to copy. It will suck to have spent the better part of a month copying the files over to find out that I have to do it all over again.

Edit: Yes, the update fixed the issue.

Are those disks or their images still with you? It's a rather important question.

Okay, I've taken a bit more time to try and make sense of things. Although the drives are from a Dell Perc controller, I'm able to use mdadm to read the meta data enough to determine the order in which the drives failed.

Drive 0 failed first, then drive 4, then drive 1. So, the best combination for the RAID should be with 0 and 4 missing. With R-Explorer, I added the drives and missing drives in the correct order, set it to RAID-6 and the file system came up right away.

With R-Studio, I get this:
[attachment=2]R-Studio-RAID6-drives-0-4-missing.png[/attachment]

When I look at the boot sector with this config on R-Studio it looks like garbage:
[attachment=1]R-Studio-RAID6-drives-0-4-missing-BootSector.png[/attachment]

But, when I look at the boot sector with the exact same config on R-Explorer, the boot sector looks fine:
[attachment=0]R-Explorer-RAID6-drives-0-4-missing-BootSector.png[/attachment]

If I enable drive 4 with R-Studio and do any other combination of missing drive, the partition does show, but every variation shows different results.

Weird, with the scenario posted above, I can only get R-Studio to load the file structure if I add the stale drive into to the mix. As soon as I drop the 2nd drive, the BS turns into a garbled mess. Any chance that R-Studio has a flaw for larger RAID 6 arrays or has issues with hardware RAID-6's? If I can get a chance today, I'll post the R-Studio screenshots to show what I'm seeing.

Actually, we tested a 4-disk mdadm RAID6 with 2 disconnected disks, R-Studio worked fine.

Any chance that we will see R-Studio support 2 missing drives in a future update?

Okay, so I've found the issue I was having with R-Studio. Apparently, R-Studio will only work with 1 missing disk. If I add the stale clone of drive 4, the partition label suddenly pops up, but as soon as I disable drive 4 or swap it with missing disk, first BS is garbage.

I was able to quickly assemble the RAID with R-Explorer using default settings but am unable, thus far, to find the appropriate config is R-Studio. Anyone have a way to interpret these settings into R-Studio speak?

[attachment=0]RAID-config.png[/attachment]