HP StorageWorks Secure Path V3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide (AA-RU7VD-TE, February 2004)

HSG80 Controller Failover Transitions
106 Secure Path v3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide
Establishing a serial connection to the controller
Before changing failover states, you must establish a serial connection to the
controller as follows:
1. Establish a serial connection to the controller with the serial line connected to
the top controller.
This controller will be referred to as this_controller. The second
controller will be referenced as the other_controller. All HSG80
actions in the next steps are assumed to be through this serial connection.
2. Verify the current state of the controllers by entering:
CLI> show this_controller
The display from the show command has a number of sections. The
information that is required is contained in the first section, with the header of
Controller. A sample display for Transparent Failover is shown below. The
failover state is identified with an arrow (->)preceding the noted text.
As the controller state changes, the display will be shown to help verify that
the change has completed successfully.
3. After establishing a serial connection to the controller, choose one of the
following types of failover transitions to change the controller states that are
described in this appendix.
—“Changing from Transparent Failover to no failover mode” on page 107
—“Changing from Transparent Failover to Multiple-bus Failover mode” on
page 108
—“Changing from Multiple-bus Failover mode to no failover and then to
Transparent Failover mode” on page 110
Controller:
HSG80 ZG83502145 Software V85F-0, Hardware E03
NODE_ID = 5000-1FE1-0000-3350
ALLOCATION_CLASS = 0
SCSI_VERSION = SCSI-3
-> Configured for dual-redundancy with ZG80200290
-> In dual-redundant configuration