IBM System Storage DR550 | Version 3.0 | 17 March 2006 | Page 118 |
|
|
|
|
Problem Determination
This section provides guidance for an entry point to perform problem determination on a DR550. Each underlying product that makes up a DR550 provides problem determination information. A DR550 is made up of these products:
•One or two P5 520
•One or two TotalStorage SAN Switches
•One or Two TotalStorage DS4100 Fibre Channel Storage Servers
•From 0 to 14 DS4000 EXP100 Storage Expansion Units
•AIX V5.3 TL 4
•HACMP V5.3
•System Storage Archive Manager V5.3.2
•DS4000 Storage Manager Version 9.12.65
The first step is to establish which area of the DR550 may be the cause of a particular problem and then use the Problem Determination tools and information that is provided for that product.
An additional guide to help with problem is “Managing the DR550” which is available at http://www- 1.ibm.com/support/docview.wss?rs=1116&context=STYUE4&dc=DB500&q1=ssg1*&uid=ssg1S1002730&l
Gathering problem information from the user
To help isolate the source of a problem gather the following information:
1.Establish which area or product of the DR550 may be the cause of a particular problem, for example, an amber LED is lit on an EXP100, or the Attention LED is lit on the P5 520s. Once isolated, use the Problem Determination tools and information that is provided for that product that is indicating a problem.
2.What is the problem?
a.What is the system doing?
b.What is the system not doing?
c.Is there a specific user or system function that is not working correctly?
d.Are specific error messages or numbers associated with the problem, for example on a screen or an operators’ panel?
e.Which software or hardware component generated the error message or number?
f.To gather data from the p5 520 server, logon as dr550 user and switch to root (su- root) and run this command snap
This command is typed on the command line. A file named snap.tar.Z is generated by this command and is located in the /tmp/ibmsupt directory. This compressed file will contain the P5 520 error log, configuration information, AIX level, list of installed devices, information about the Object Data Manager, and several other files. You must have root privileges to use this command. This snap file can be sent to the support center for analysis.
3.Establish a history of the problem; request the following information:
a.How did you first notice the problem? Did the user do anything different that made them notice the problem?
b.When did it happen? Does it always happen at the same time, for example when the same application is run or a specific user accesses the system.
IBM Storage Systems | Copyright © 2006 by International Business Machines Corporation |
|
|
