Hello french friend
LOL
Before to focalize on a software issue, did you check all and all possible hardware issue ?
I mean :
- server power cable
- server outlet
- PSU
- sata cable
Indeed. But from the description I don't think this is likely.
Did you already swap disks on your another server ? (note each disks emplacement before to do that)
Most common issues are hardware relative
In this instance it is likely the result of using desktop drives as I described, and described on the linux raid list.
At this point, messing about with the disks too much is not a great idea (see "When things go wrong")
If possible each drive should be imaged, but that requires....lots of storage!!!!
I would suggest each of the desktop drives (I suspect they are the problem) are plugged individually into another machine and checked. Hopefully it is only one of them that has an issue and data can be recovered.
Bon courage en espérant que tu retrouves tes datas (mon sme me sert de pare-feu et héberge mon Dolibarr et pas grand chose d'autre sur deux WD black 500 GB sans problèmes, pour le moment )
As I have already said and per the raid wiki, disks UNDER 1Tb seems to be better behaved. Once they go over 1Tb you may find issues.
Years ago when I first started messing about with RAID I could not afford new enterprise drives so played with desktop drives. It soon became apparent that you needed a) good backups and b) spare disks on hand
So I started to run RAID 1 with a hot spare AND another cold spare, all the time knowing that I was playing with fire.
As soon as I could I swapped to enterprise drives, and still ALWAYS have a hot spare and at LEAST one cold spare. And backups including USB and affa. I have never run RAID 5 - far too dangerous for me. And even RAID 6 is going to highlight its limitations when it is used on big drives.
Even now the biggest drives I run are 1Tb WD RE4 drives in my backup server.....
Essentially you have got to put a price on your data.
You have to choose whether you can't afford to lose your data, or you can't afford good drives