Hi Otto, Here is the bonnie++ test result after i enabled the write cache. Seems good but not too sure if that is the best performance.
any comments? anyway the PERC 5i/R Raid Card is doing RAID 1 with 2 SATA II drives. -- ./Brandon On 7/15/07, Otto Moerbeek <[EMAIL PROTECTED]> wrote: > > On Sun, 15 Jul 2007, Otto Moerbeek wrote: > > > On Sun, 15 Jul 2007, Brandon Lee wrote: > > > > > Hi Marco, > > > > > > There is no option to enable write cache via the PERC 5i/R controller > > > or Bios. From bios, i could only select the perfornance of the HDD as > > > in "Bypass, Quiet, Suggested and Performance". > > > > I've seen this before. For some stupid reason you cannot enable the > > write cache from the BIOS. What a collegue did is use a linux live CD > > with a management program from LSI to enable it. After that all was > > OK. > > > > -Otto > > BTW, I found the instuctions from my collegue here. > Quick translation form dutch: > > Get linux drivers from dell site: mptlinux-3.02.83.12-5dkms.noarch.rpm > Put the drivers on a USB stick. > Boot knoppix live cd > (http://ftp.knoppix.nl/os/Linux/distr/knoppix/KNOPPIX_V5.1.1CD-2007-01-04-EN.iso) > > Then in knoppix: > > sudo -s > mount /dev/sda1 (the USB stick) > cd /media/sda1 > cp mptlinux-3.02.83.12-5dkms.noarch.rpm /root > cd /root > alien -i mptlinux-3.02.83.12-5dkms.noarch.rpm > cd /ramdisk/usr/src/mtplinux-3.02.83/lsi > tar xvfz lsiutil.tgz > cd lsiutil > make > ./lsiutil > > choose controller (er is er maar een) > choose RAID functions > choose change Volume settings > first option: Write Cache Enabled (Yes/No default No): Yes > remaining thing default > close and reboot. > > ugly but it works. > > -Otto Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP puffy 2G 44136 24 48902 17 23327 7 51902 39 50587 7 132.4 0 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 1901 41 +++++ +++ +++++ +++ 2519 56 6131 100 12760 99 puffy ,2G,44136,24,48902,17,23327,7,51902,39,50587,7,132.4,0,16,1901,41,+++++,+++,+++++,+++,2519,56,6131,100,12760,99
