Date: Tue, 03 Mar 1998 13:16:19 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: Julian Elischer <julian@whistle.com> Cc: hackers@FreeBSD.ORG Subject: Re: SCSI Bus redundancy... Message-ID: <XFMail.980303131619.shimon@simon-shapiro.org> In-Reply-To: <34FC66A3.2781E494@whistle.com>
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On 03-Mar-98 Julian Elischer wrote: ... > spindle inertia is no longer used for power. Probably saves them all of $3.00/drive. > I quote from the Qantum fireball programmer's manual.. > > "You may apply the power in any order, or open either the power or > return line with no loss of data or damage to the disk drive. However, > data may be lost in the sector being written at the time of power > loss." > > Other drives have similar stories to tell. > > We queried the manufacturers closely on this > and they confirmed that they cease all operation IMMEDIATLY on > recognition of power loss. That means that the drive's cache is useless at best. Alternatively, my HA work is that much more valuable (coupled with a good UPS). ---------- 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
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