Add The Stripe Mirrorset As A Logical Unit - StorageWorks RAID Array 410 Installation Manual

2.11.4 Add the STRIPE MIRRORset as a Logical Unit

To make a STRIPE MIRRORset available to the host computer, you must identify it as a
host logical unit. The unit number is a one or three digit number preceded by "D". The unit
number identifies the controller's target number and the MIRRORset as the Logical Unit
(LUN) connected to the target. Units identified with controller target number 0 have a single
digit number which corresponds to LUN number. For example, D500 would be target 5,
LUN 0. Units identified with controller targets 1, 2 and 3 use a 3 digit number. The first
digit 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 D500 STRIPE_MIRROR
The final step in creating the MIRRORset is to enable the writeback cache. A single CLI
command enables that feature for the entire MIRRORset:
SWXRC> SET D500 WRITEBACK_CACHE
Where: D500 represents the host logical units of the STRIPE MIRRORset described
above.
You have now completed all the steps required to create an initial configuration for your
controller. In the following steps, you should verify and record your configuration for future
reference. Additional worksheets are provided in Appendix A for recording future new or
modified configurations.
First, verify the Logical Units you have configured:
SWXRC> SHOW UNITS
The controller responds with a display similar to that shown below:
LUN
D0
D1
D2
D3
D4
D400
D500
Record the information in the following table:
EK–SMRA3–IG. C01
For some operating systems Logical Units must be sequential.
They must begin with D0 and be followed by D1, D2, D3, ..... etc.
USES
RAID_SET_1
RAID_SET_2
STRIPE_SET_1
DISK410
DISK510
MIRROR_SET_1
STRIPE_MIRROR
Chapter 2. Creating an Initial Configuration
NOTE
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