You pay for sata you get sata; no magic there.

On Mon, Jul 16, 2007 at 01:44:10AM +0800, Brandon Lee wrote:
quoted text
> 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 <otto@drijf.net> 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
> >
> >

quoted text
> 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