----- Mensaje original -----
> I'm responding to both Andres and Alan, because my answers are related.
>
> On 2012-11-17 21:02, Andres Muniz wrote:
> > wow this shred stuff is really interesting. If i have EXT4 running on a
> > solid state drive (ssd), does it mean that doing a shred will
> > significantly reduce the life of the ssd?
>
> It will reduce the life of the SSD by one write per block, per pass of
> shred.
>
> On 2012-11-16 17:30, Alan Pope wrote:
> > More passes don't really give you any benefit. A simple single run of
> > dd is sufficient.
>
> That depends against what you are trying to defend. It is possible, with
> specialist tools, to recover data after a single wipe. This is especially
> true when the wipe is done with uniform data, such as all zeros. So if
> you want to prevent the next owner of a laptop from running photorec,
> one pass is fine. If you want to stop a data recovery specialist or
> intelligence agency, it is not.
>
> And Andres, securely deleting SSDs requires another tool. I suggest
> reading the following:
>
> http://arstechnica.com/security/2011/03/ask-ars-how-can-i-safely-erase-the-data-from-my-ssd-drive/
>
> http://www.unixmen.com/secure-erase-your-ssd/
>
> http://howto.cnet.com/8301-11310_39-20115106-285/how-to-securely-erase-an-ssd-drive/
>
> Regards,
> Tyler
>
thanks!
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