HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 280
Selecting a Disk Array and Its Components, Does it make any difference which controller I select?
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Selecting a Disk Array and Its Components When using Array Manager 60, you must select the disk array you will be managing. In addition, many commands also require you to identify the controller, disk, or LUN within the disk array that will be impacted by the command. The command parameters used to select a disk array and its internal components are listed and described in Table 36. Note Does it make any difference which controller I select? There are two paths to the disk array - one for each controller. Typically you can select either controller to perform an operation and the outcome will be the same. An exception is when you are binding a LUN. The controller you select will be assigned ownership of the LUN. To maintain I/O performance, you should divide the ownership of the LUNs on the disk array between the two controllers. Table 36 Command Parameters for Identifying Disk Array Components Command parameter Description ArrayID cntrlrID channel:ID Identifies the disk array. The ArrayID may be either the disk array ID (its S/N), or an alias name assigned to the array. Each disk array must have a unique ArrayID. The disk array S/N and alias can be determined using the amdsp -i command. Identifies the controller within the disk array controller subsystem. Values can be either A or B, depending on which slot the controller is installed in. Identifies a disk within the disk array. The channel value indicates the SCSI channel that the disk enclosure containing the disk is connected to. The ID value indicates the SCSI ID assigned to the slot in which the disk is installed. LUN Valid channel values are 1 - 6, and valid SCSI ID values are 0 - 4, 8 12. Identifies a specific LUN on the disk array. Valid LUN values are 0 31. 280 Managing the Disk Array Using Array Manager 60