topic Re: SCSI termination in Integrity Servers

SCSI termination

Juergen Nagel_1 — Mon, 03 Mar 2008 07:40:49 GMT

Hi,
I have two rx2600 machines. One of these machines need an externel SCSI terminator to find the third disk (Channel B). To other machine not. Is there any possibility to switch on/off an internal termination?

Regards
Juergen

Re: SCSI termination

Khairy — Tue, 04 Mar 2008 01:07:43 GMT

hi,

Nowadays, HP scsi adapters will autoterminate if attached to HP disk enclosures or HP tape drives.

But more info are needed.

Can we know what model of storage is currently attach to the rx2600?

Re: SCSI termination

Juergen Nagel_1 — Tue, 04 Mar 2008 08:45:45 GMT

Hi,
There is no external device attached. Only internal disks.
Juergen

Re: SCSI termination

Torsten. — Tue, 04 Mar 2008 09:37:52 GMT

First run

# ioscan -fn

to get the controller device file, for example /dev/mpt3

ext_bus 3 0/1/1/1 mpt CLAIMED INTERFACE SCSI Ultra320
/dev/mpt3

Now run

# mptconfig /dev/mpt3
# mptutil /dev/mpt3

to get more information first.

Re: SCSI termination

Torsten. — Tue, 04 Mar 2008 11:26:18 GMT

Some more information...

I'm not absolutely sure how to get this setting from the OS.

But on the offline diagnstics CD (and on the service partition if installed) is a tool for configuring the SCSI controller.

The default setting for termination is AUTO, but it could be even ON or OFF.

You may boot from the CD and run "pscsi.efi" to check the settings.
On my system this value cannot be changed for the core I/O (but for other HBAs), but who knows ... it could even be firmware dependend ...

I would check the settings, check for newer firmware (included in servers firmware) and finally consider a bad controller.

I attach a screenshot.

Re: SCSI termination

Juergen Nagel_1 — Tue, 04 Mar 2008 15:50:41 GMT

Hi,

I updated the Firmware
System Firmware 2.31
BMC 1.53
Management Processor E.03.30.

Now it works.
Thanks