Date: Mon, 12 Oct 1998 22:46:57 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: Don.Lewis@tsc.tdk.com (Don Lewis) Cc: gibbs@plutotech.com, tlambert@primenet.com, julian@whistle.com, Don.Lewis@tsc.tdk.com, freebsd-fs@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG Subject: Re: filesystem safety and SCSI disk write caching Message-ID: <199810122246.PAA10583@usr02.primenet.com> In-Reply-To: <199810121326.GAA09753@salsa.gv.tsc.tdk.com> from "Don Lewis" at Oct 12, 98 06:26:05 am
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> } 1) Use a UPS. > > Even with an UPS, a large percentage of our unclean shutdowns are power > related. Most of these are due to power outages that last longer than > our UPS batteries. I don't think there is enough room in our building > to store enough UPS batteries to last through our typical winter power > outages. I don't think we'll be getting a backup generator anytime soon, > and even then I've heard quite a few stories on freebsd-isp about problems > getting generators to reliably start. The point of a UPS is to give you room to perform an orderly shutdown prior to UPS failure. This requires using a UPS that support monitoring and software control of power-on-state and running a monitoring daemon capable of powering down the UPS. > } 2) Use a drive with non-bogus firmware. Recent Seagate and IBM > } drives should work just fine. I haven't validated any Quantum > } drives in this regard yet. > > But how can tell if the firmware is non-bogus? Someone you trust tells you it is non-bogus. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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