Date: Tue, 03 Mar 1998 14:09:56 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: Karl Denninger <karl@mcs.net> Cc: hackers@FreeBSD.ORG, Julian Elischer <julian@whistle.com> Subject: Re: SCSI Bus redundancy... Message-ID: <XFMail.980303140956.shimon@simon-shapiro.org> In-Reply-To: <19980303155120.43579@mcs.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On 03-Mar-98 Karl Denninger wrote: ... > You want the heads off the active media surface and the write gate off > *now* > if you detect a power failure. ``now'' is a relative term. f you are writing a sector, you want ``now'' to be ``just as soon as the sector is done''. Power failure is not instantenous. It is a short event, but takes some time. Those old drives that sported ``command completion'' lost less data upon power failure than these new ``1,000,000 MTBF 10,000RPM as lnog as I do not get warm even once'' drives. They also cost a lot more per megabyte, vibrated real nice and loud and kept my garage warm ieven in the dead of winter. Ah, the good old days... :-) ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.980303140956.shimon>