Chapter 7. Advanced maintenance, troubleshooting, and diagnostics 343
Figure 7-14 Download Firmware window
Do not make changes to your configuration or remove drives or enclosures during the
upgrade process.
The update might take up to an hour. Do not interrupt the update process within this hour.
Doing so might cause data loss. If you suspect that the update process has stopped, inspect
the log file (select View Log in the window shown in Figure 7-13 on page 342) or consult IBM
Support.
7.1.7 DbFix tool
Customers upgrading from controller code versions 07.36.08.00 or 07.36.12.00 need to take
some additional interim steps prior to upgrading the firmware. These releases were affected
by a code defect that could lead to recursive reboots when a controller is reset during the
code upgrade. Therefore, a check utility was developed to ensure that the DS4000/DS5000
storage subsystem is not prone to these symptoms before proceeding.
The number of units running on these code versions is believed to be low. Nonetheless,
customers that discover that if they have either 07.36.08.00 or 07.36.12.00 controller firmware
still installed on the DS4000/DS5000 storage subsystem that they should:
Avoid making any configuration changes
Save a Support Data file from Storage Manager by selecting Advanced
Troubleshooting Support Data Collect ... .
Download the DbFix Utility from the firmware download page at the following address:
http://www.storage.ibm.com/support
Check the online documentation for the latest recommendations and procedure
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