HP Brocade BladeSystem 4/12 HP StorageWorks Fabric OS 6.x administrator guide - Page 198

FC4-48 and FC8-48 blade exceptions, Conserving power

Page 198 highlights

To summarize: • When an FC4-16, FC4-32, FC8-16, FC8-32, FC10-6, or FC4-16IP blade is replaced by an FR4-18i blade, the FC configuration of the previously configured FC_Ports continues to be used, and all FC_Ports on the FR4-18i blade are persistently disabled. • When an FR4-18i blade is replaced by an FC4-16, FC4-32, FC8-16, FC8-32, or FC10-6 blade, then the EX_Port configuration is removed from any ports that were configured as EX_Ports (equivalent to disabling the EX_Port configuration using the portCfgEXPort command). All remaining port configurations are retained. FC4-48 and FC8-48 blade exceptions The FC4-48 blade is compatible only with the CP4 processor blade, FC4-16/32 port blade, FR4-18i, and FC4-16IP iSCSI blade. Because the area IDs are shared with different port IDs, the FC4-48 and FC8-48 blades support only F, G and E_Ports. They do not support FL_Ports. Port swapping on an FC4-48 or FC8-48 is supported only on ports 0-15. For the FC4-32 and FC8-32 blades, port swapping is supported on all 32 ports. This means that if you replace a 32-port blade where a port has been swapped on ports 16-31 with a 48-port blade, the 48-port blade faults. To correct this, reinsert the 32-port blade and issue portSwap to restore the original area IDs to ports 16-31. 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 if 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 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. 200 Configuring Directors

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200
Configuring Directors
To summarize:
When an FC4-16, FC4-32, FC8-16, FC8-32, FC10-6, or FC4-16IP blade is replaced by an FR4-18i
blade, the FC configuration of the previously configured FC_Ports continues to be used, and all
FC_Ports on the FR4-18i blade are persistently disabled.
When an FR4-18i blade is replaced by an FC4-16, FC4-32, FC8-16, FC8-32, or FC10-6 blade, then the
EX_Port configuration is removed from any ports that were configured as EX_Ports (equivalent to
disabling the EX_Port configuration using the
portCfgEXPort
command). All remaining port
configurations are retained.
FC4-48 and FC8-48 blade exceptions
The FC4-48 blade is compatible only with the CP4 processor blade, FC4-16/32 port blade,
FR4-18i, and FC4-16IP iSCSI blade.
Because the area IDs are shared with different port IDs, the FC4-48 and FC8-48 blades support only F, G
and E_Ports. They do not support FL_Ports.
Port swapping on an FC4-48 or FC8-48 is supported only on ports 0–15. For the FC4-32 and FC8-32
blades, port swapping is supported on all 32 ports. This means that if you replace a 32-port blade where
a port has been swapped on ports 16–31 with a 48-port blade, the 48-port blade faults. To correct this,
reinsert the 32-port blade and issue
portSwap
to restore the original area IDs to ports 16–31.
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 if 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 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.