Upgrading To Dual-Controller Configuration; Removing The Second Controller; Enclosure Management - Dell VERLAND TANDBERG Titan T2000 Owner's Manual

controller module or a controller module blank must be installed in slot B to ensure sufficient airflow through the enclosure
during operation. For 5U84 enclosures, a controller module must be installed in both slot A and slot B.
These same 2U and 5U chassis form factors are used for the supported expansion enclosures; but with I/O modules instead of
controller modules.

Upgrading to dual-controller configuration

You can upgrade a 2U single-controller module configuration by adding a second controller module in slot B.
Controller module B can be added while controller module A continues to process host I/O requirements. However, we
recommend scheduling configuration changes during a maintenance window with low or no I/O activity.
Data is not impacted when a controller module B is inserted into the enclosure, but we recommended doing a complete data
backup before proceeding.
NOTE:
● When a controller module B is inserted, the redundancy setting is automatically changed from Single Controller to
Active-Active ULP (Unified LUN Presentation). No manual changes are necessary.
● If PFU (partner firmware upgrade) is enabled, when you add controller module B, the system automatically updates the
firmware on second controller module to match the firmware version on the first controller module.
1. Type the following CLI command to confirm that redundancy is configured as Single Controller Mode:
show advanced-settings
This step confirms that controller module A does not report controller module B as missing.
2. Remove the controller blank from slot B.
3. Grasp the controller module with both hands, and with the latch in the open position, orient the module and align it for
insertion into slot B.
4. Ensuring that the controller module is level, slide it into the enclosure as far as it will go.
A controller module that is only partially seated will prevent optimal performance of the controller enclosure. Verify that the
controller module is fully seated before continuing.
5. Set the module in position by manually closing the latch.
You should hear a click as the latch handle engages and secures the controller module to its connector on the back of the
midplane.
6. Connect the cables.
7. Map the host ports on controller module B.

Removing the second controller

To remove controller module B and revert back to a single-controller configuration:
1. Shut down controller module B using PowerVault Manager or the CLI.
2. Remove the controller module from the enclosure.
3. Type the following CLI command to change the redundancy settings to Single Controller Mode:
#set advanced-settings single-controller
4. Install a controller module blank in slot B.

Enclosure management

The enclosure is mechanically and electrically compliant with the Storage Bridge Bay (SBB) v 2.1 specification.
SBB modules actively manage the enclosure. Each module has a SAS expander with its own storage enclosure processor (SEP)
that provides a SES target for a host to interface using the ANSI SES (SCSI Enclosure Services) standard. If one of these
modules fails, the other module continues to operate.
Storage system hardware 7