Sun StorageTek[TM] 5000 Series NAS: Upgrading cluster system without downtime

Asset ID:	1-71-1017471.1
Update Date:	2017-02-01
Keywords:

Solution Type Technical Instruction Sure

Solution 1017471.1 : Sun StorageTek[TM] 5000 Series NAS: Upgrading cluster system without downtime

Applies to:

Sun Storage 5310 NAS Appliance - Version All Versions and later
Sun Storage 5320 NAS Cluster - Version All Versions and later
All Platforms

Goal

By upgrading one head at a time and using the failover functionality, the NAS operating system can be upgraded without downtime. This is also known as a 'rolling upgrade'.

Solution

Be sure to assess the system and read through these procedures before performing the operating system upgrade. Perform backups of all volumes and /dvol/etc data.

This procedure is only supported for a single OS revision upgrade, for example 4.11 to 4.12. Upgrades spanning more that one release must be done incrementally.

WARNING: It is recommended that failover be properly configured and the system should be in a stable state before proceeding with the upgrade, unless otherwise instructed by Technical Support.

Additionally, the OS release notes should be checked to determine any issues or potential downtime impact related to running this procedure on a particular operating system release.

To Upgrade the Operating System:

NOTE: You will need to download a copy of the OS image file (.IMG) you will be upgrading to the client system used to perform the upgrade.

From a remote client, open a web browser window to Head 1 (SerialNumber-H1).
Log in to the Web GUI, and enter the password if required.
Select System Operations > Update Software from the displayed menu.
Click the Browse button and navigate to a valid ST5XXXC OS image file (from the location you downloaded it to on your client) and then select Update.
Once the image file has been successfully copied, a dialog appears to inform that a manual server reboot is required. Click OK.
From the GUI, go to System Operations > Shut Down the Server, select Reboot this head and then click Apply.
Close the web browser window.
From a remote client, open a web browser window to Head 2 (SerialNumber-H2).
Log in to the Web GUI, and enter the password if required.
Verify on the status screen that Head 2 (SerialNumber-H2) is now in the ALONE state.
Navigate to High Availability > Recover, and click the 'Recover' button. Wait for the recovery to complete. Verify that both heads are in the NORMAL state.
From the menu, select the System Operations > Update Software.
Using the Browse button, select the same ST5XXXC OS image file used in step 4 then select Update.
From the GUI, go to System Operations > Shut Down the Server, select Reboot this head, and then select Apply.
Close the Web browser window.
From a remote client, open a Web browser window to Head 1 (SerialNumber-H1).
Login to the Web GUI, enter the password if required.
Verify that Head 1 (SerialNumber-H1) is now in the ALONE state.
Navigate to High Availability > Recover and select the Recover button. Wait for the recovery to complete.
Use the Web GUI or telnet interface to verify that both heads are in the NORMAL state, and running the new OS version.

***Checked for relevance on 04-JUN-2014***

***Checked for relevance on 01-FEB-2017***

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