Chapter 13. RAS, monitoring, and troubleshooting 687
5. Select all of the files to include in the compressed file; then, click Download. Depending 
on your browser preferences, you might be prompted where to save the file or it 
downloads to your defined download directory.
13.4  Software update
This section describes the operations to update your Storwize V7000 software to V8.1. 
The format for the software update package name ends in four positive integers that are 
separated by dots. For example, a software update package might have the following name:
IBM_2145_INSTALL_8.2.1.0
13.4.1  Precautions before the update
This section describes the precautions that you should take before you attempt an update.
During the update, each node in your Storwize V7000 clustered system is automatically shut 
down and restarted by the update process. Because each node in an I/O Group provides an 
alternative path to volumes, use the Subsystem Device Driver (SDD) to make sure that all I/O 
paths between all hosts and storage area networks (SANs) work. 
If you do not perform this check, certain hosts might lose connectivity to their volumes and 
experience I/O errors when the Storwize V7000 node that provides that access is shut down 
during the update process. You can check the I/O paths by using datapath query SDD 
commands.
13.4.2  IBM Storwize V7000 update test utility
The software update test utility is a Storwize V7000 software utility that checks for known 
issues that can cause problems during a Storwize V7000 software update. For more 
information about the utility, see this website.
Download the software update utility from this page where you can also download the 
firmware. This procedure ensures that you receive the current version of this utility. You can 
use the svcupgradetest utility to check for known issues that might cause problems during a 
software update. 
The software update test utility can be downloaded in advance of the update process. 
Alternately, it can be downloaded and run directly during the software update, as guided by 
the update wizard.
You can run the utility multiple times on the same IBM Storwize V7000 system to perform a 
readiness check-in preparation for a software update. Run this utility for a final time 
immediately before you apply the software update to ensure that there were no new releases 
of the utility since it was originally downloaded.
Important: Before you attempt any IBM Storwize V7000 code update, read and 
understand the Storwize V7000 concurrent compatibility and code cross-reference matrix. 
For more information, see this website and click Latest Storwize V7000 code.