StorageWorks EK-SMRAB-IG, Руководство по установке

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Getting Started – RAID Array 310 V3.1 for HP–UX
D–4 EK–SMRAB–IG. B01
D.3.3 Initialize the Striped MIRRORset
You must initialize the striped MIRRORset before you can put it into service.
When you initialize a STRIPEset, you can optionally specify a chunksize. The chunksize
is the number of blocks of data that are transferred at one time. By using the default
chunksize, the controller will select a chunksize that works well for most site
requirements.
HSZ20> INITIALIZE MIRSTR1 SAVE_CONFIGURATION
NOTE
Valid chunksizes are 16–32768 blocks. You should use a
larger chunksize for applications that make a lot of I/O
requests. Use a smaller chunksize for applications that make
relatively few I/O requests, but need to move large amounts
of data with each request.
D.3.4 Add the Striped MIRRORset as a Logical Unit
To make a striped MIRRORset available to the host computer, you must add it as a host
logical unit with a unique unit number. The unit number is a one or three digit number
preceded by “D”, such as “D0” or “D102”. The unit number is made of the controller’s
target ID and the Logical Unit (LUN) of the striped MIRRORset for the target. Each
target ID can have up to eight LUNs, numbered 0–7.
•
Units identified with controller target ID 0 have a single digit number which
corresponds to the LUN number. For example, D5 would be target 0, LUN 5.
•
Units identified with all other controller targets (1–7) use a 3 digit number. The first
digit corresponds to the controller target number, the second digit is always 0 and the
third digit is the LUN number. For example, D205 would be target 2, LUN 5.
Identify the striped MIRRORset as a host logical unit by using the ADD UNIT
command.
HSZ20> ADD UNIT D300 MIRSTR1
Where 300 represents the host logical unit of the striped MIRRORset created above.
D.3.5 Set Writeback Cache
The final step in creating the MIRRORset is to enable the writeback cache. A single CLI
command enables that feature for the entire striped MIRRORset:
HSZ20> SET D300 WRITEBACK_CACHE
Where D300 represents the host logical unit of the striped MIRRORset described above.