Date: Mon, 12 Oct 1998 06:26:05 -0700 From: Don Lewis <Don.Lewis@tsc.tdk.com> To: "Justin T. Gibbs" <gibbs@plutotech.com>, Terry Lambert <tlambert@primenet.com> Cc: 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: <199810121326.GAA09753@salsa.gv.tsc.tdk.com> In-Reply-To: "Justin T. Gibbs" <gibbs@plutotech.com> "Re: filesystem safety and SCSI disk write caching" (Oct 4, 9:51pm)
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On Oct 4, 9:51pm, "Justin T. Gibbs" wrote: } Subject: Re: filesystem safety and SCSI disk write caching } >> >I told you so. } >> } >> You told me some things that were in-correct and some things that } >> I already knew. Par for the course. } > } >Feel free to make his setup work with SCSI write caching enabled. } } I gave the recipe for this on freebsd-alpha near the end of september. } } 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. } 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? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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