Date: Thu, 27 Aug 2015 13:01:30 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-questions@freebsd.org Subject: Re: Stop using a SATA drive Message-ID: <55DEFC1A.4040806@infracaninophile.co.uk> In-Reply-To: <55DEFA0F.9000900@sneakertech.com> References: <CAPi0psvT5aaHR7kU%2B28qwVDdutyMn7LjhFUGZRWctz4gGfgvgw@mail.gmail.com> <20150824214252.53aa04c6.freebsd@edvax.de> <CAPi0psu5pP_Z7FcR8h5cQAZiZyDmQTKWzFx-17tUEV5g-%2B7hjw@mail.gmail.com> <55DEFA0F.9000900@sneakertech.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --oUtlA3qOGOPP4FeL2PhEwwJ82dpa7wf9G Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2015/08/27 12:52, Quartz wrote: > Modern drives (where "modern" means anything made in the past 10 years = I > think) are set up in such a way that the inertia of the spinning > platters will 'throw' the heads onto the parking area if power suddenly= > dies. This is not the same thing as intentionally issuing a park-head > command, but the results are more or less the same. Electric motors will act as generators: the trick with modern drives is that they use the inertia of the spinning disk platters to generate sufficient power to move the heads to the parked position when the external power goes out. Cheers, Matthew --oUtlA3qOGOPP4FeL2PhEwwJ82dpa7wf9G Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQJ8BAEBCgBmBQJV3vwbXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQxOUYxNTRFQ0JGMTEyRTUwNTQ0RTNGMzAw MDUxM0YxMEUwQTlFNEU3AAoJEABRPxDgqeTnhJUP/j/oCZhIR73sSSt9Co+x6OT9 LGDxhxt9Tywx3VG9dzsV7+cupTbEXhUkct2Gy/XWBpMm6vpgsTWsPKouia4Bq+6U lVExIPuU5f35pGIN/Mf/TqkU1VP6eF2Jr99L+BV1dZ/jBTwwxg2hgLSPwymzla0J ye+ddbAV9HA+tNDnrlCYrjzLUWwp5rVPajzk5vMT4g1ITvs9YQd3jyK1wH0JEFTH xWOiV5jiGqHUdKjrSaseVoRg63oL85LBNFy2H+wbR/GSB5VvB8Ti7DfSHopEjvF3 0g8VaO3QiXfuil11G8zoVRcFpOkk+MGnZROSL1mT1OHT7Wvy7JuO1peXI+EWvdM5 eOuLXe6opDCb+GuurSQ8lUa7V8HGTmdS1ZVQTFQC/jBRm5h9FmB8CFPZl8T3YNCD Or7jRyum3lOwdS1KfxUXY61obMTPaXSvdvJRtV2iClNKy+E6nTHp/SRrslbumIaw XKRl9X2EJ0Pa6ngWXHrAywtqykaoCKzA6siZ+dYSkcOX9LXwijyphX8gQaok7WAm mwPC7FHxbO/pjq1akYx4FUgCU7CDKNQvDLFD11xOOVtOz6xoGFfRsbakTo6Rv9wy wrnY9agoMsZ2o3yQH4fgCxPDbgzQhCqcVMLvnVkB5+6dom9HjBMf8KHioHs46c4u GPBD+ingMJqrpTZFUwLj =ckdo -----END PGP SIGNATURE----- --oUtlA3qOGOPP4FeL2PhEwwJ82dpa7wf9G--
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