Slow transfer speeds with U320 drives and HP Smart Array 641

[Olaf Hoyer]

On Wed, 24 Mar 2004, Nelis Lamprecht wrote:

> Hi,
>
> With the ciss driver on my HP ProLiant ML350 I've noticed the transfer
> speed on my RAID controller is only.
>
> da0 at ciss0 bus 0 target 0 lun 0
> da0: <COMPAQ RAID 1  VOLUME OK> Fixed Direct Access SCSI-0 device
> da0: 135.168MB/s transfers
> da0: 69459MB (142253280 512 byte sectors: 255H 32S/T 17433C)
>
> Both my drives on the RAID controller are U320 72GB pluggable SCSI's.
> The RAID card also has the optional 64MB battery backed write back cache
> enabler installed.

Hi!

well, I also see the possibility that in this case, the theoretical
transfer limit of the PCI Bus is displayed...

Yes, the the controllers are 64bit, but... would explain a bit.

Just my 2 Cents
Olaf




-- 
Olaf Hoyer        ohoyer at gaff.hhhr.ision.net
Fuerchterliche Erlebniss geben zu raten,
ob der, welcher sie erlebt, nicht etwas Fuerchterliches ist.
(Nietzsche, Jenseits von Gut und Boese)