[sdiy] OT: how to save a dead Raided Drive?

[Dan Snazelle]

yes 

now that it appears that the PSU was (one) of the problems and the drives are spinning, I am going to need to
buy a new drive, and find some Mac software that can read the Raid setup,

keeping my fingers crossed

hearing those drives spin again was a welcome sound




--------------------------------------------
check out various dan music at:

http://www.myspace.com/lossnyc

(updated monthly)

http://www.soundclick.com/lossnyc.htm



http://www.indie911.com/dan-snazelle

(or for techno) http://www.myspace.com/snazelle

ALSO check out Dan synth/Fx projects:

AUDIO ARK:

www.youtube.com/watch?v=TJRpvaOcUic

www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page

www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page

and soundtrack/design work:

NEW: check out Dan's sound design from the 1998 award winning film SAFARI by catherine chalmers

http://www.catherinechalmers.com/videos.cfm






----------------------------------------
> Date: Sat, 27 Jun 2009 15:04:54 +0200
> From: aym-htnys at teaser.fr
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] OT: how to save a dead Raided Drive?
>
> On 2009-06-27 01:28 +0000, Dan Snazelle wrote:
>
>> my 3yr old 500 gig lacie ext hard drive died. (and no, i had not
>> backed it up...money for a new drive had been non-existent)
>>
>> now since it is 2 WestDigital 250gig drives in the box, i am
>> assuming it is a raid setup with a disk controller card of some
>> kind
>>
>> BUT then i wonder, if i get these drives into their own new
>> enclosure, since they were in a RAID array, how do i get the
>> computer to read them properly?
>
> If it can hold 500 GB of data using two 250 GB drive, it's RAID-0
> a.k.a. striping which is really more AID than RAID since there's
> no redundancy.
>
> Best case is that the controller or PSU died. In that case, you
> can put the drives in a computer and read the data off them. The
> easiest is probably to get a computer with enough SATA or IDE
> ports to plug four drives at a time ((a) the one where the system
> is installed, (b) and (c) the two from the LaCie thing and (d) the
> 500 GB+ one you'll have to find the money for) and copy the data
> from disks (b) and (c) to disk (d). If LaCie used concatenation,
> it'll be easy (cat /dev/sdb /dev/sdc>/dev/sdd). If they used
> striping, you'll have to first find out what the stripe size is
> then use something along these lines :
>
> http://www.teaser.fr/~amajorel/misc/unstripe
>
> If the failure is not in the controller or PSU but in one of the
> disks, either they used striping and you're SOL, or they used
> concatenation and then you may be able to recover some data.
>
>> it is very unlikely that both drives would mechanically fail at
>> once right?
>
> Yes, though I've seen drives from the same batch fail a couple
> days apart, while installed in different computers. Another thing
> than can and does happen is catastrophic failure of the PSU
> frying both disks at once.
>
> Don't try writing to disk (b) or (c). That could easily get you
> into deeper... waters. Get advice from knowledgeable people,
> like comp.sys.ibm.pc.hardware.storage.
>
> --
> André Majorel 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy