Re: [sleuthkit-users] secure erase in raid 5

[Simson G. <si...@ac...>]

It really depends on how the Raid 5 is created and whether or not there are any spare drives. In my research I once bought a used RAID system which had been securely erased, but it turns out that two of the drives had minor failures and the “spare” drives had been swapped in. The previous owner had tried to erase by erasing the RAID without undoing it and the failed drives had not been erased. 

In general, it’s best to disassemble the RAID and securely erase each device.

Another poster recommended using ‘dd if=/dev/zero of=<DEV>’ for secure erasing. That will erase, but not securely. You should do a secure erase with a bootable disk such as DBAN.

Simson



On Mar 11, 2014, at 10:47 PM, maría elena darahuge <dar...@gm...> wrote:

> Hi:
> 
> I would like to know if it is possible with dd to secure erase a raid 5 or the first step is to undo the raid and then the secure erase and how to verify it?
> 
> -- 
> Prof. Ing. María Elena Darahuge
> 
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