I'm curious if anyone has experience tuning Sun A1000 (or similar) RAID arrays on Solaris. I discovered today that the arrays we've been using have apparently been running at about the slowest possible speed. I used bonnie++ to test, and it recorded speeds of about 4MB/s for reading and writing. That's an absolutely pathetic speed -- I've got a Linux/Sparc box right next to it doing software RAID on 3 disks, and it can push around 30MB/s. After hunting through some documentation, I tried enabling some caches, which appeared to help, bringing read/write speeds up to about 10MB/s. I figure there's plenty more I can do, though.. Here's what I've done so far. (The 0,1,2,3,4 bit is specifying which LUNs to operate on, and c2t5d0s0 is the controller name) # enable cache read-ahead raidutil -c c2t5d0s0 -p enable 0,1,2,3,4 # enable write cache raidutil -c c2t5d0s0 -w on 0,1,2,3,4 # enable read cache raidutil -c c2t5d0s0 -C on 0,1,2,3,4 # set cache block size to 32 blocks raidutil -c c2t5d0s0 -S 32 -- _ _ _ _ _ ___ _ _ _ ___ _ _ __ NO! Taco Bell is NOT the / \/ \(_)| ' // ._\ / - \(_)/ ./| ' /(__ Mexican Phone Company! \_||_/|_||_|_\\___/ \_-_/|_|\__\|_|_\ __) [ Mike Hicks | http://umn.edu/~hick0088/ | mailto:hick0088 at tc.umn.edu ] -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 232 bytes Desc: This is a digitally signed message part Url : http://shadowknight.real-time.com/pipermail/tclug-list/attachments/20020508/f3e41ee3/attachment.pgp