Recovering information from RAID5?

Question

RAID

Hello.
There was a NAS QNAP 419P II with 4 HDDs and RAID5 which died successfully and unexpectedly.
If you connect these drives to a PC, will it be possible to recover information and how to do it?

Answer 1

First things first, make a full sector-by-sector copy of all 4 disks. Yes, donors will be needed, where to write it down. But it's cheaper than killing everything with a random joint. And it's also cheaper than the specials. recovery offices - they will also have to carry donors.
Then, when everything is backed up sector by sector, take linux with mdadm and try to build an array. mdadm knows a number of popular raids and may well pick up the array. (maybe your nas didn't use mdadm directly)

Answer 2

Did one disk die or 2? If 2 did not have time to go through a rebuild before, you can solemnly bury it, there is a mess of data, if 1 died, then the most reliable thing is to replace it, wait for the rebuild and then merge the data, the second option is to simply merge the data, when one disk dies, they remain available straight through the NAS and RAID from mode 5 gradually transitions to mode R1. Tell us what exactly died, the data can most likely be saved if you don’t smack the fever.

Answer 3

Yes, you can do it through specialized paid software, it can recognize a bunch of hardware raids, it’s really worth it, I bought it at one time

Answer 4

Try r-studio. And as you have been correctly told, no writing to discs without a backup.