HP StorageWorks 2.128 SAN Director Switch - Manual (Page 89)

Fabric OS 5.x administrator guide 89
Disabling and enabling port blades
Port blades are enabled by default.
You might need to disable a port blade to perform diagnostics. When diagnostics are executed manually
(from the Fabric OS command line), many commands require the port blade to be disabled. This ensures
that diagnostic activity does not interfere with normal fabric traffic.
Disabling a port blade
1. Connect to the switch and log in as admin.
2. Issue the
slotOff
command with the slot number of the port blade you want to disable.
For example:
Enabling a port blade
1. Connect to the switch and log in as admin.
2. Issue the
slotOn
command with the slot number of the port blade you want to enable.
For example:
Conserving power
To conserve power and ensure that more critical components are the least affected by a power
fluctuation, you can power off components in a specified order, using the
powerOffListSet
command.
The available power is compared to the power demand to determine whether there is enough power to
operate. If there is less power available than the demand, the power-off list is processed until there is
enough power for operation. By default, the processing proceeds from slot 1 to the last slot in the chassis.
As power becomes available, slots are powered up in the reverse order.
NOTE: Some FRUs in the chassis may use significant power, yet they cannot be powered off through
software. For example, a missing blower FRU may change the power computation enough to affect how
many slots can be powered up.
The
powerOffListShow
command displays the power-off order.
Blade terminology and compatibility
Before configuring a chassis, familiarize yourself with the director CP blade and port blade nomenclature,
as well as the port blade compatibilities. Often in procedures, only the abbreviated names for CP and
port blades are used (for example, the FC4-16 blade). Table 15 provides CP and port blade abbreviations
and descriptions.
switch:admin> slotoff 3
Slot 3 is being disabled
switch:admin>
switch:admin> sloton 3
Slot 3 is being enabled
switch:admin>