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Re: Not being able to recover a RAID 5 20 Tb partition, help needed

To: Juan Antonio Sillero Sepulveda <juan.sillero@xxxxxxxxx>
Subject: Re: Not being able to recover a RAID 5 20 Tb partition, help needed
From: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Date: Sat, 1 Feb 2014 10:56:16 +0100
Cc: Roger Willcocks <roger@xxxxxxxxxxxxxxxx>, Guillem Borrell i Nogueras <guillem@xxxxxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <D52B7046-0672-4C4E-AC79-DCB7F811DB2E@xxxxxxxxx>
Organization: Intellique
References: <1391002795.2573.79.camel@xxxxxxxxxxxxxxxxx> <1391009068.4294.83.camel@xxxxxxxxxxxxxxxxxxxxxxxx> <1391014448.2573.95.camel@xxxxxxxxxxxxxxxxx> <20140129184250.7af7200f@xxxxxxxxxxxxxxxxxxxx> <CC18E95B-75B3-47CE-8FBE-9FA511A38CD5@xxxxxxxxxxxxxxxxxx> <20140131223715.0a977fc2@xxxxxxxxxxxxxx> <D52B7046-0672-4C4E-AC79-DCB7F811DB2E@xxxxxxxxx>
Le Fri, 31 Jan 2014 22:50:51 +0100 vous Ãcriviez:

> Guillem, my colleague and expert, correct me. These is the hardware.
> 
> Disk /dev/sdq - 20 TB / 18 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdr - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sds - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdt - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdu - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdv - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdw - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdx - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdy - 22 TB / 20 TiB - DotHill R/Evo 5730-2R
> Disk /dev/sdz - 20 TB / 18 TiB - DotHill R/Evo 5730-2R

This is quite new hardware, it's probably supported/maintained. You
should definitely check with DotHill support.

> We store everything, basically. Images, matlabs files, txt, dat, pdf,
> binary files, hdf5 files, .mat, Fortran files, etc...

Photorec can recognize many common file formats, but not all. I've
successfully restored several terabytes with it, however you won't get
any metadata back with it.

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