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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Link Sys NAS NS 4000 RAID 5

March 5th, 2009, 6:45

Hi guys, just had a Linksys NAS NSS4000 come in. It a 4 disk raid 5. Trying to rebuild manually. All 4 disks are ok.

Anyone know the default block size for this array? There are no files larger than 30 KB so I'm thinking its either 32 KB but more likely 64 KB. If you have worked on one of these, please pm me.

Actually the first one to PM me the default settings (disk rotation, order, block size and staring sector) to rebuild this array will receive a nice cheque in the post 8)

This is quite urgent, at the moment i'm using trial and error to rule out different combinations but it's taking its time.

Thanks.

PS. I'm serious about the cheque :D

Re: Link Sys NAS NS 4000 RAID 5

March 5th, 2009, 16:39

anyone got any advice?

Re: Link Sys NAS NS 4000 RAID 5

March 6th, 2009, 0:12

Features
● Gigabit network system chassis with support for Redundant Array of Independent Disks
(RAID) 0/1/5/10 and “just a bunch of disks” (JBOD)
● Supports Mac/PC (CIFS), Linux (network fiile server [NFS]), and FTP clients
● File-based disk encryption (Advanced Encryption Standard [AES] 256)


Looks like its just going to depend on how it was configured... the encryption might be a problem though.

Re: Link Sys NAS NS 4000 RAID 5

March 6th, 2009, 3:22

The data is not encrypted. Managed to recover some JPGS. The file system is XFS. Its a RAID 5. The Unit is reporting one disk as failed and the other disks are reported as no volume.

Re: Link Sys NAS NS 4000 RAID 5

March 6th, 2009, 11:34

Well that's good news at least.

Re: Link Sys NAS NS 4000 RAID 5

March 6th, 2009, 12:31

Does it have one all drive 1 Ext3 partition at the beginning?

Re: Link Sys NAS NS 4000 RAID 5

March 6th, 2009, 14:28

no ext partition

Re: Link Sys NAS NS 4000 RAID 5

March 7th, 2009, 13:24

You may work with a usefull part from each drives, use the WinHex to cut this part from each drives to a image-files. Than, build a raid5 ( for example in UFS Explorer Professional). Which type of drives rotation (backward Parity ,backward Dynamic Parity, Forward Parity) you may just select, it different in differents NAS. What block size, you may it select too, it often is 128Kb.

Than try to scan partition, ufs Explorer work with (xFS) very good.

We rebuild this NAS-Raid successfully many time.
Good luck. ;)

Sorry for my English, I only teach.

Re: Link Sys NAS NS 4000 RAID 5

March 9th, 2009, 10:03

Thanks everyone for all your advice. I have managed to recover all of the data. 8)

Re: Link Sys NAS NS 4000 RAID 5

March 10th, 2009, 7:48

what was the block size spaz?

Re: Link Sys NAS NS 4000 RAID 5

March 10th, 2009, 11:26

1.2 GB :wink: check pm.
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