Re: [Fed-Talk] Secure erase of SSD drives?
Re: [Fed-Talk] Secure erase of SSD drives?
- Subject: Re: [Fed-Talk] Secure erase of SSD drives?
- From: "O'Donnell, Dan" <email@hidden>
- Date: Tue, 19 Mar 2013 15:17:01 +0000
- Thread-topic: [Fed-Talk] Secure erase of SSD drives?
Solid state disks are fundamentally different from spinning ferromagnetic
disks. Solid state are silicon chips in which the transistors maintain
state when turned off. (I don't know if they trickle charge to retain
state.)
Magnetic hard drives are just that - magnetic - with (conceptually) little
ferromagnetic particles that change position when pushed by the magnetic
heads of the drive. As such they can be affected by the high B field of a
degaussing magnet.
Solid state drives should be completely unaffected by a magnetic field.
-----Original Message-----
From: "Dr. Brad Cox" <email@hidden>
Date: Tuesday, March 19, 2013 6:20 AM
To: "Dyson, Jennifer L CIV SPAWARSYSCEN-PACIFIC, 53521"
<email@hidden>
Cc: "email@hidden" <email@hidden>
Subject: Re: [Fed-Talk] Secure erase of SSD drives?
>Ran into that with a personal hard drive that needed warranty
>replacement. Apple INSISTED that I return the old drive undamaged or pay
>an exorbitant fee. Something about needing to monitor failure causes
>before tossing in a dumpster. A secure one they claimed ;)
>
>Resolved that (to my satisfaction; probably not govt's) with a honking
>big drive erase magnet. Apple never objected. My next choice would be a
>hammer, tree chipper or the like.
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