[ILUG] Good Linux SATA RAID Controller
frlinux at gmail.com
Thu Oct 1 10:16:30 IST 2009
On Thu, Oct 1, 2009 at 8:44 AM, stephen mulcahy
<smulcahy at atlanticlinux.ie> wrote:
> So, in a vague handy-wavey type conclusion without going into what kind of
> disks you have, what filesystems you are using and what kind of machine it's
> all installed in - it looks like the 3ware has pretty good read speed (which
> you'd expect if it's smart enough to do reads from both drives) but pretty
> poor write speed, relatively. It'd be interesting to see equivalent bonnie
> results if you switched the drives to software RAID (it'd be interesting to
> see results from my 1yr old machine using RAID aswell - but probably like
> yourself, I have only limited time for testing these things).
The 2 drives are Seagate Barracuda 7200.11 1,5TB, SATA, 7200RPM, 32MB
As I said, this is the cheapest 3ware card I have (2 ports only, no
BBU). They are RAID1.
also tried on soft raid on a cheapish system:
bonnie++ -n 0 -u 0 -r 512 -s 1024 -f -b -d /mnt/backups/
Using uid:0, gid:0.
Version 1.03d ------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
europa 1G 52464 40 27003 12 65510 17 168.8 1
Drives are ST3400832AS. But old generation.
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