Compaq HSZ80 manual 30CLI Commands, PARTITION=partitionnumber, Nopreferredpath Default

5–30CLI Commands

PARTITION=partition_number

Identifies the unit number for a partition on a container. The partition-numberidentifies the partition associated with the unit number being added. Use the SHOW container-namecommand to find the partition numbers used by a storageset or a single-disk unit.

NOTE: Do not split partitioned units across ports. Partitioned units must be on a single port.

MAXIMUM_CACHED_TRANSFER=32 (Default)

MAXIMUM_CACHED_TRANSFER=n

Sets the largest number of write blocks to be cached by the controller. The controller will not cache any transfers over the set size. Accepted write block sizes are 1 through 2048.

PREFERRED_PATH=OTHER_CONTROLLER

PREFERRED_PATH=THIS_CONTROLLER

NOPREFERRED_PATH (Default)

May be set only when dual-redundant controllers are operating in a multiple bus failover configuration. In a multiple bus failover configuration, the host determines which controller the units are accessed through. The host’s unit-to-controller settings always take precedence over the preferred path assigned to units with this switch. The target ID numbers assigned with the SET controller PORT_1_ID (or PORT_2) command determines which target ID number the controller uses to respond to the host.

NOTE: If your controllers are configured to operate in transparent-failover mode, do not set the PREFERRED_PATH switch with the ADD UNIT or SET unit-numbercommand—otherwise, an error message is displayed. The error message indicates the assignment of a preferred controller path at the unit level is valid only when operating in multiple bus failover mode.

When no preferred path is assigned, the unit is targeted through the controller which detects the unit first after the controllers start.