LSI 1030, RAID1 unsupported

[Doug Ambrisko]

Matthew Jacob writes:
| Hi, Doug!

Been a while ... got any good LSI contacts?
 
| LSI makes several RAID products- a lot from different companies
| they've bought. The behaviour and quality is quite variable.

Granted, however, the Dell PE2850s at work has the LSI 1030
controller as well.  The firmware is customized for Dell and might
have some other tweaks.  I was trying to highlight that lack of knowledge
of what the controller is doing will skew your results.

Another possibility is that the IBM machine is broken.  I've seen some
strange things that might be due to the Intel 7520 chipset on the Dell
box.  If the temporary interrupt storms I've seen happen then that will 
effect disk performance as well.

Doug A.
 
| On Wed, 12 Jan 2005 12:27:14 -0800 (PST), Doug Ambrisko
| <ambrisko at ambrisko.com> wrote:
| > Roger Marquis writes:
| > | On Sun May 23 2004 Scott Long wrote:
| > | >The mpt and amr drivers are largely unmaintained right now as LSI
| > | >no longer sponsors an engineer to take care of them.  I'm not sure
| > | >what else to say about that other than we would gladly accept a new
| > | >maintainer.
| > |
| > | Is this likely to change in the foreseeable future?  I just put
| > | together an IBM e325 and discovered that the LSI 1030's performance
| > | in RAID1 mode is abominable (5.3-RELEASE-p4, amd64, with Fujitsu
| > | MAP3367NCs).
| > 
| > Make sure your system isn't in background init mode etc.  Of course
| > I don't know how to do this without LSI monitoring utitilies.
| > 
| > Complain to LSI the need for this.  Without the various utilities and
| > versions with fixed bugs you can't run a reliable RAID (ie. won't
| > get RAID notificatioin that a drive went away, it is doing a
| > consistancy check, etc).
| > 
| > The more people that complain then hopefully we can get LSI to fix
| > their binary only utilities that are required to monitor and admin.
| > their RAID controller :-(
| > 
| > I messured the amr RAID controller is faster for everything then aac
| > on the same HW and drives under RAID 10.