Date: Sat, 26 Nov 2005 14:17:55 -0500 (EST) From: user <user@dhp.com> To: freebsd-scsi@freebsd.org Subject: configuration choices with Dell CERC (adaptec 2610SA) Message-ID: <Pine.LNX.4.21.0511261411190.8180-100000@shell.dhp.com>
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I am going to use a Dell CERC (adaptec 2610SA 6-port) (_not_ 21610sa 16-port) SATA raid card. I am familiar with dell PERCs, and FreeBSD and RAID in generl, but I wanted to go over some of the configuration choices that the adaptec BIOS is giving me when I attempt to create a mirror: Read caching: yes/no (default is yes) (read caching does not rely on a battery, and is completely "safe", right? I am going to set this to "yes", however I wonder - why would anyone _ever_ set it to "no" ?) Write caching: enable/disable (this is the one that can get you into trouble if the system loses power before a write is committed to disk, and the battery is dead, right? I am going to set this to "disable" because I do not think the 2610SA has a battery ... right ?) Rebuild rate: high/medium/low (I have no idea what this means - I never saw this in adaptec bios before ... can anyone define exactly what this means ?) --- Any general comments / suggestions are appreciated as well. Thanks a lot.
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