RAID5 with 2 disks Problem
Posted: 05 Apr 2015, 17:43
Hello, would appreciate your help.
A RAID 5 in Synology had problems with a disks (defects sectors) and, by mistake, I formatted the wrong disk on my Windows system (deleted partitions, created a new NTFS, quick format). Ended up with 2 defective disks: one formatted NTFS , the second one with sector errors.
I've copied all 5 disks to an ESXi server to a Ubuntu 14.10 server having 5 Virtual Disks dedicated for this (using dd) and trying to recover the first disks, first off. If not possible i will concentrate on the disk having defective sectors (recovered with ddrescue)
Here is the defective disk layout (EFI GPT -->Analyse--> Deep Search):
TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdi - 348 GB / 325 GiB - CHS 42426 255 63
Partition Start End Size in sectors
> MS Data 256 4980607 4980352 [1.41.10-2026]
Linux Raid 256 4980735 4980480 [md0]
MS Data 2048 625139711 625137664 [New Volume]
Linux Swap 4980736 9174895 4194160
Linux Raid 4980736 9175039 4194304 [md1]
Linux Raid 9453280 624600807 615147528 [fileserver:10]
MS Data 312559617 625139712 312580096
P MS Data 625140280 625284618 144339
By comparison here is one of the 3 good disks :
TestDisk 7.0-WIP, Data Recovery Utility, March 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdk - 348 GB / 325 GiB - CHS 42426 255 63
Partition Start End Size in sectors
>D MS Data 256 4980607 4980352 [1.41.10-2026]
D Linux Raid 256 4980735 4980480 [md0]
D MS Data 2048 625139711 625137664
D Linux Swap 4980736 9174895 4194160
D Linux Raid 4980736 9175039 4194304 [md1]
D Linux Raid 9453280 624600807 615147528 [fileserver:10]
I have some backups of the data but still need to recover the raid.
Would appreciate your help.
A RAID 5 in Synology had problems with a disks (defects sectors) and, by mistake, I formatted the wrong disk on my Windows system (deleted partitions, created a new NTFS, quick format). Ended up with 2 defective disks: one formatted NTFS , the second one with sector errors.
I've copied all 5 disks to an ESXi server to a Ubuntu 14.10 server having 5 Virtual Disks dedicated for this (using dd) and trying to recover the first disks, first off. If not possible i will concentrate on the disk having defective sectors (recovered with ddrescue)
Here is the defective disk layout (EFI GPT -->Analyse--> Deep Search):
TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdi - 348 GB / 325 GiB - CHS 42426 255 63
Partition Start End Size in sectors
> MS Data 256 4980607 4980352 [1.41.10-2026]
Linux Raid 256 4980735 4980480 [md0]
MS Data 2048 625139711 625137664 [New Volume]
Linux Swap 4980736 9174895 4194160
Linux Raid 4980736 9175039 4194304 [md1]
Linux Raid 9453280 624600807 615147528 [fileserver:10]
MS Data 312559617 625139712 312580096
P MS Data 625140280 625284618 144339
By comparison here is one of the 3 good disks :
TestDisk 7.0-WIP, Data Recovery Utility, March 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdk - 348 GB / 325 GiB - CHS 42426 255 63
Partition Start End Size in sectors
>D MS Data 256 4980607 4980352 [1.41.10-2026]
D Linux Raid 256 4980735 4980480 [md0]
D MS Data 2048 625139711 625137664
D Linux Swap 4980736 9174895 4194160
D Linux Raid 4980736 9175039 4194304 [md1]
D Linux Raid 9453280 624600807 615147528 [fileserver:10]
I have some backups of the data but still need to recover the raid.
Would appreciate your help.