benchmarking raid arrays?

[Charles Sprickman]

Hi,

I'm in the process of shopping around for some new hardware raid 
controllers.  In the meantime, I need to gather some numbers on the 
current adaptec stuff that we're running.

I'm aware of bonnie/bonnie++ and IOZone.  bonnie doesn't really seem 
thorough enough for what we want to test for (random reads/writes), and 
IOZone forces you to do some ugly contortions in MS Excel to get any 
decent graphs.

We're mainly looking for a controller to pair up with a few Postgres 
database hosts.  We are leaning heavily towards the latest and greatest 
from 3Ware and Areca.  They are SATA, but are getting lots of praise from 
folks on the postgres-performance list.  This is apparently not so much 
because of the underlying disk technology (SATA vs. SCSI), but because 
both vendors are just putting much more modern processors on their RAID 
cards compared to the rather anemic stuff that LSI, Adaptec, et al. use.

So what do folks here use to get detailed data on a raid array?

Thanks,

Charles