Date: Sat, 26 Nov 2005 21:28:12 +0100 From: Herve Boulouis <amon@sockar.homeip.net> To: user <user@dhp.com> Cc: freebsd-scsi@freebsd.org Subject: Re: configuration choices with Dell CERC (adaptec 2610SA) Message-ID: <20051126202812.GB594@ra.aabs> In-Reply-To: <Pine.LNX.4.21.0511261520500.8180-100000@shell.dhp.com> References: <20051126194152.GA594@ra.aabs> <Pine.LNX.4.21.0511261520500.8180-100000@shell.dhp.com>
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Le 26/11/2005 15:22, user a écrit: > > One other clarification - I have the option to turn write caching on and > off when I create the array (I am turning it ON now for the array based on > your opinion) ... but I also have an option in the adaptec bios to turn > write-caching on for each specific disk drive. I have also turned this > on. > > caching for the array _depend on_ having write caching for each drive > turned on ?) Never enable the disk write caching. The raid controller write caching is safe if you have a battery on the card or a UPS whereas the disk write cache can never be safe. -- Herve Boulouis
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