Data Recovery from Buffalo NAS

[Eric Cope]

FYI - I was able to recover the data using UFS Explorer (A windows only
app). It was the only program I could get to work.
It was pretty nice though.

Eric

On Tue, Nov 17, 2009 at 1:49 PM, Eric Cope <eric.cope at gmail.com> wrote:

> that was the conclusion I came too. Regarding calling buffalo, the phone
> wait time is usually estimated to 8 hours.
> Thanks for the tips.
> Eric
>
>
> On Tue, Nov 17, 2009 at 1:23 PM, Lisa Kachold <lisakachold at obnosis.com>wrote:
>
>>
>>
>> On Mon, Nov 16, 2009 at 10:10 PM, Eric Cope <eric.cope at gmail.com> wrote:
>>
>>> We think the drives are good. We want to mount the four drives to extract
>>> the data (it was RAID 5). We only have 1 SATA2USB adapter. If I am able to
>>> read the whole paritition (using dd), how can I mount 4 iso's using RAID to
>>> get the data?
>>>
>>> On Mon, Nov 16, 2009 at 7:20 PM, Lisa Kachold <lisakachold at obnosis.com>wrote:
>>>
>>>> Hi ERIC
>>>>
>>>> On Mon, Nov 16, 2009 at 6:19 PM, Eric Cope <eric.cope at gmail.com> wrote:
>>>>
>>>>  some light googling revealed buffalo as a UFS partition over four
>>>>> drives. Has anyone recovered a software RAID 5 configuration? Can I dd to an
>>>>> iso, mount the iso's, mount the raid, extract the data, and move forward?
>>>>
>>>>
>>>> You might have a different super block on the disk from Buffalo.   You
>>>> might check your exact model (Is this a LinkStation) against the HowTo's
>>>> from Buffalo?
>>>>
>>>> Knoppix works really well for restoring disks (every systems admin needs
>>>> a knoppix USB flash)
>>>>
>>>> Page 218 dd_rescue  (in case there are bad blocks):
>>>> http://www.scribd.com/doc/15490322/Knoppix-Hacks-by-OReilly-Media
>>>>
>>>> Buffalo's Wiki shows a procedure on how to restore data to a LinkStation
>>>> using Knoppix:
>>>>
>>>> http://buffalo.nas-central.org/wiki/Upgrade_%28or_replace%29_the_existing_LinkStation_hard_drive
>>>>
>>>> And:
>>>>
>>>> http://buffalo.nas-central.org/wiki/Upgrade_%28or_replace%29_the_existing_LinkStation_hard_drive#Backup_your_entire_hard_drive.2C_partition_a_blank_drive_on_a_Knoppix_workstation
>>>>
>>>> Full Knoppix Hacks (ripped to Scribd):
>>>> http://www.scribd.com/doc/15490322/Knoppix-Hacks-by-OReilly-Media
>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>
>>> Hi Eric
>>>>
>>>> According to Buffalo's wiki:
>>
>> With RAID5 the data is distributed accross all disks and one disk stores
>> an XOR checksum of the remaining (n-1) disks. So you can loose 1 disk.
>>
>> In theory you should be able to connect all disks to a workstation, and
>> repair it there. In practice this does not work, as the byte order<http://en.wikipedia.org/wiki/Byte_order>of a recular workstation (i386) is different and the MD driver is not endian
>> agnostic. An Apple Mac is required for this.
>>
>> See Moving disks <http://buffalo.nas-central.org/wiki/Moving_disks>, or Terastation
>> crash after power failure<http://forum.nas-central.org/viewtopic.php?f=40&t=1217&p=10728#p10728>.
>>
>>
>> xfs_repair on the Terastation worked for me. See reb's post : Raid 5 '4
>> red lights' issue
>> Reference:
>> http://buffalo.nas-central.org/wiki/Terastation_Data_Recovery#RAID5
>>
>> *For superblock identification and data repair on one disk see
>> http://buffalo.nas-central.org/wiki/Moving_disk*s
>>
>> Buffalo uses Linux for RAID 5 on a Terastation (what is your model -
>> that's important), but the data is distributed across the drives.
>>
>> The easiest would be to purchase a replacement Buffalo, use it to restore
>> your data (being careful to place your system in exactly the same
>> configuration, marking each drive as you take it out) and when you have
>> completed your task, and determine you no longer need it, return it.
>> You will pay a restocking fee, at most.
>>
>> This ufsexplorer (tool) link might assist you to see the drive structure:
>> http://www.ufsexplorer.com/inf_terastation.php
>>
>> And don't ask us, CALL or email Buffalo and look at their wiki!
>>
>>
>>  --
>>>> Skype: (623)239-3392
>>>> AT&T: (503)754-4452
>>>> www.it-clowns.com
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>
>>>
>>>
>>> --
>>> Eric Cope
>>> http://cope-et-al.com
>>>
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>>
>>
>>
>> --
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>> AT&T: (503)754-4452
>> www.it-clowns.com
>>
>>
>>
>>
>>
>>
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>
>
>
> --
> Eric Cope
> http://cope-et-al.com
>



-- 
Eric Cope
http://cope-et-al.com
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