begin quoting kelsey hudson as of Thu, Mar 01, 2007 at 11:07:53AM -0800: > Stewart Stremler wrote: > >You can get 15 disks per SCSI controller these days. How many > >disks per FC controller can you get, I wonder? > > 256, if I remember right. Ah, LOTS of room. :)
> However, whether it's a good idea to connect that many disks to the same > loop remains to be a question of "good idea/bad idea". > > NetApp et al reccommend you don't connect more than 28 disks (two > shelves) to a 1Gbps FC loop, 48 to a 2Gbps loop, and 96 to a 4Gbps loop. > Which makes sense, as you can easily saturate the bus with that many > devices. It's less stressful to add suddenly-needed storage by simply adding more disks than it is to add more disks *and* additional controllers, even if in the long run adding the controller is needed for performance. -- Drive-juggling with IDE is a PITA. Stewart Stremler -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
