speed of a ciss-based pseudo-disk

[Mikhail Teterin]

> > ciss0: <HP Smart Array 642> port 0xb800-0xb8ff mem 
> > 0xfea80000-0xfeabffff,0xfeafe000-0xfeafffff irq 29 at device 1.0 on pci4
> > da0 at ciss0 bus 0 target 0 lun 0
> > da0: <COMPAQ RAID 0  VOLUME OK> Fixed Direct Access SCSI-0 device 
> > da0: 135.168MB/s transfers
> > da0: 69419MB (142171680 512 byte sectors: 255H 32S/T 17423C)
> > 
> > Why is the reported speed only 135.168MB/s? All equipment is U320, so
> > I'd expect the nominal speed of 320MB/s...
 
> Because it is a bogus number. There's no way to query for this. You're
> running at full speed.

Thanks, but if there is way to query for this, how do you know, I'm
running at full speed? I'd like to test this throroughly before giving
positive feedback to the seller or replacing the cable :-)
 
> > Also, what, if anything, are people using to monitor/control
> > ciss-based arrays? HP offers software, but only for Linux and
> > Windows...
> 
> HP has not released their acu, so you're limited to what the driver
> reports in syslog.

I just found:

	http://sourceforge.net/projects/array-info/ (unchanged in 3 years)
and additional patches for it at:
	http://members.aon.at/hstraub/linux/array-info/

I'll try that and, maybe, the HP's Linux binaries too. Thanks!

	-mi