Sam Reports Alternate Links as Unused

[CTS Support]

I have a HP-UX 11.0 system connected to a EMC Symmetrix

When using SAM to display all the disks, it reports that several disks that I know are in use as alternate links are Unused

example:

P 1/10/0/0.1.3 1 LVM vg140 4402 EMC SYMMETRIX
A 0/8/0/0.0.4 1 Unused -- 4402 EMC SYMMETRIX

Some of the Junior Admins are very reliant on SAM and it would be a big help if we could rely on SAMs information to know which disks are really in use or not! (Don't wanna be slaughtering data by assinging a disk already in use!)

Thnx

[Manju Kampli]

we had same situation and by installing one of the sam patches the problem was fixed. Now we don't see multiple paths in the sam for the disk which is part of the VG. I don't remember the patch number

hope this helps
Manju

[Chin Guan · Accepted solution]

You can refer to Knowledge base document id S3100001244

I am using an EMC disk array. SAM (System Administration Manger) reports
the alternate links as 'unused' disks. On the other hand, 'vgdisplay'
reports the correct information for the EMC disks.

How can I resolve this problem?


CONFIGURATION
Operating System - HP-UX
Subsystem - EMC Disk Array

RESOLUTION
Perform the following steps to resolve your problem:

1. Install latest SAM patch:

[PHCO_19046/PACHRDME/English]

Note: This patch, as with any patch, may be superseded. Please
check for the latest patch at the Electronic Support Center
(ESC) by using either of these web sites:


http://us-support.external.hp.com


http://europe-support.external.hp.com


2. Set the Common Serial Number Option in the EMC array.