hi ya seth/josh
> > I've mostly been a lurker but recent changes in my company have peaked my
> > interest in the performance of sw vs hw raid.
> >
> > Does anyone have some statistics online of sw raid (1,5) vs hw raid
> > (1,5) on a linux system?
I've been haphazardly collecting some benchmark info... or methodology
http://www.linux-consulting.com/Raid/Docs
- see raid_cmd.uhow2
- see raid_benchmark.txt
- have a s/w raid5 on debian-2.1 w/ 5 4.5Gb fireball(?) scsi3-drives
( linux-2.2.3 w/ patches )
- have 3 other hardware raid boxes too that I could run non-destructives tests on...
- donno how to tests it..
- hoping for some non-destructive read/write/seek disk tests
- have heard someone say that running two striped ide drives is 2x slower than
normal ide access... donno...
( I use striped 2striped 8Gb ide drives for incremental backups of each 64Gb
main servers )
have fun
alvin
http://www.linux-consulting.com/Raid
> We have a DPT midrange SmartRAID-V and we're going to do testing on two
> 7 x 17.5 GB RAID 5 arrays, one software, one hardware. We'll post the
> results as soon as they're available. (Testing will happen on a dual PII
> 350 w/ 256 MB RAM & a cheezy IDE disk for /, running 2.2.6 (or later).)
>
> What kind of tests would people like to see run? The main test I'm
> going for is simply stability under load on bigish file systems &
> biggish file operations.
>
