[wplug] RAID performance

[Patrick Wagstrom]

Michael Skowvron wrote:
> Patrick Wagstrom wrote:
>> We've got a machine right now with 4x400GB Hitachi SATA I drives 
>> (model HDS724040KLSA80S) connected to a 3ware Escalade 9500S 4 port 
>> SATA RAID controller (128MB of ram on the controller).  These drives 
>> are structured in RAID 5.
> 
> You don't mention anything about the system architecture.
> 
> The 9500S is a 66MHz, 64 bit card. That's good for about 400MB/sec max 
> if you've got that kind of PCI bus. That's somewhat rare.

The card is in a 133MHz PCI-X slot, so that should mean 133MHz and 
64bit, correct?

2x Opteron 250
Tyan S2882G3NR Motherboard
4GB PC2700 ECC Registered RAM

So, I don't think it's the bus that's slowing it down.

--Patrick