Date: Fri, 14 Dec 2007 14:46:28 +0100 From: Rainer Duffner <rainer@ultra-secure.de> To: freebsd-current@freebsd.org Subject: Re: ZFS melting under postgres... Message-ID: <47628934.6000007@ultra-secure.de> In-Reply-To: <86abodxvbd.fsf@ds4.des.no> References: <47606C09.2070209@isc.org> <47609F0A.7010805@clearchain.com> <47609FE3.8040606@barafranca.com> <4760B444.1080604@clearchain.com> <06CAC7FC-DB58-441D-A6E0-76D1D8133393@tamu.edu> <86ir31xwlu.fsf@ds4.des.no> <1197637700.1250.35.camel@herring.rabson.org> <86abodxvbd.fsf@ds4.des.no>
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Dag-Erling Smørgrav wrote: > > Note that you can also get disk drives with a certain amount of NAND > flash built-in, but FreeBSD doesn't support that yet. > > They are intended for use with Vista - and have recently been found to be marginally more effective than a placebo (for Vista-performance). The speed-gains are barely distinguishable from measurement-errors... So, if the drives would help ZFS, it would be a big irony. There are companies that manufacture "pure" SSDs (www.superssd.com, www.soliddata.com) with battery-backup. Unfortunately, the price-tag of these systems is still beyond reach for normal customers. cheers, Rainer
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