Add Individual Disks As Logical Units - StorageWorks RAID Array 410 Installation Manual

Getting Started - RAID Array 410 for HP-UX
corresponds to the controller target number, the second digit is always 0 and the third digit to
the LUN number. For example, D205 would be target 2, LUN 5. You must now identify the
STRIPEsets as Host Logical Units by using the ADD UNIT command.
SWXRC> ADD UNIT D2 STRIPE_SET_1
This example uses the controller target of 0 (specified earlier with the
SET_THIS_CONTROLLER command) and LUN 2 as the digit in D2, since the STRIPEset
is the third unit identified on the controller.
The final step in creating the STRIPEset is to enable the writeback cache. A single CLI
command enables that feature for the entire STRIPEset:
SWXRC> SET D2 WRITEBACK_CACHE
Where: D2 represents the host logical unit of the STRIPEset described above.
2.9

Add Individual Disks as Logical Units

Before you can put an individual disk into service, it must be initialized:
SWXRC> INITIALIZE DISK410
SWXRC> INITIALIZE DISK510
If you require individual Disks to be available to the host as Logical Units, you must now
identify the Disks as Host Logical Units by using the ADD UNIT command.
SWXRC> ADD UNIT D3 DISK410
SWXRC> ADD UNIT D4 DISK510
In this example, disks DISK410 and DISK510 were identified to the host as units D3 (Target
0, LUN 3) and D4 (Target 0, LUN 4) respectively.
If a disk in a RAIDset goes bad, the controller will replace it with a disk from the Spareset, if
one exists. If there is no Spareset, the RAIDset will run "reduced," and you should replace
the disabled disk as soon as possible. We recommend allocating one drive as a sparest.
If you chose to leave one or more drives as a Spareset for the RAIDset, you must now
configure that in the controller. To create the Spareset, identify the drive(s) using the ADD
SPARESET command.
SWXRC> ADD SPARESET DISK610
In this example, DISK610 was identified to the controller as a Spareset.
2–8
For some operating system, Logical Units must be sequential.
They must begin with D0 and be followed by D1, D2, D3, ..... etc.
For some operating systems Logical Units must be sequential.
They must begin with D0 and be followed by D1, D2, D3, ..... etc.
NOTE
NOTE
EK–SMRA3–IG. C01