[CentOS] issue_discards in lvm.conf
John R Pierce
pierce at hogranch.com
Thu Jun 12 17:21:43 UTC 2014
On 6/12/2014 10:12 AM, m.roth at 5-cent.us wrote:
> We use two methods: for the drives that are totally dead, or*sigh* the
> SCSI drives, they get deGaussed. For SATA that's still running, we use
> DBAN.*Great* software. From what I've read, one pass would probably be
> good enough, given how data's written these days. With my name certifying
> it, I do paranoid, and tell DBAN the full 7-pass, DoD 5220.22-M. I
> *really* don't think anyone's getting anything off that.
if the drive has remapped tracks, there's stale data on there you can't
erase with DBAN.
> We don't have any SSDs, so I can't speak to that. Bet you could deGauss
> them, easily enough. Or maybe stick 'em on a burner on a stove to get over
> the Curie point....*
degaussing would do nothing to flash memory, its semiconductor, not
magnetic.
--
john r pierce 37N 122W
somewhere on the middle of the left coast
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