Dot Hill Systems II 200 FC service manual Upgrading Firmware, Installing Firmware Upgrades

7.4Upgrading Firmware

Caution – Be particularly careful about downloading and installing PLD firmware. If the wrong firmware is installed, or the firmware is installed on the wrong device, your controller might be rendered inoperable. Always be sure to upgrade your SES firmware first before trying to determine if you need a PLD upgrade.

7.4.1Installing Firmware Upgrades

It is important that you run a version of firmware that is supported by your array.

Caution – Before updating your firmware, make sure that the version of firmware you want to use is supported by your array.

To download new versions of controller firmware, or SES and PLD firmware, use one of the following tools:

■SANscape CLI (with an in-band connection, for Linux and Microsoft Windows hosts, and for servers running the Solaris operating environment)

■SANscape program (with an in-band connection, for Solaris and Microsoft Windows hosts)

■Firmware application (for controller firmware download only from a Microsoft Windows host with an out-of-band serial port connection)

You should not use both in-band and out-of-band connections at the same time to manage the array. You might cause conflicts between multiple operations.

7.4.2Controller Firmware Upgrade Features

The following firmware upgrade features apply to the controller firmware:

■Redundant Controller Rolling Firmware Upgrade

When downloading is performed on a dual-controller system, firmware is flashed onto both controllers without interrupting host I/O. When the download process is complete, the primary controller resets and lets the secondary controller take over the service temporarily. When the primary controller comes back online, the secondary controller hands over the workload and then resets itself for the new firmware to take effect. The rolling upgrade is automatically performed by controller firmware, and the user’s intervention is not necessary.

■Automatically Synchronized Controller Firmware Versions

Chapter 7 Maintaining Your Array 7-7