HP NetRAID 1Si Controller - Manual (Page 100)

Chapter 4 HP NetRAID Express Tools
94
9. Open the Advanced menu to set the remaining options.
•
Stripe Size: This parameter specifies the size of the segment written to
each disk in a RAID logical drive.
•
Write Policy: This parameter specifies the cache write policy. You can
set the write policy to Write-Back or Write-Through.
•
Read-Ahead: This parameter enables the SCSI Read-Ahead feature for
the logical drive. You can set this parameter to Normal, Read-Ahead,
or Adaptive.
•
Cache Policy: This parameter sets read cache operation during data
transfers involving the current logical drive.
(For definitions of the Write policy, Read policy, Cache policy, and their
options, see the "Glossary.")
Press Esc to exit the Advanced Menu.
10. When you are finished defining the current logical drive, highlight Accept
and press Enter. If there is space remaining in the arrays, the next logical
drive ready to be configured appears. Repeat Steps 6 to 9 to configure
another logical drive. If the array space has been used up, a list of the
existing logical drives appears. Press any key to continue and respond to
the Save prompt.
11. Initialize the logical drives you have just configured. See "Initializing
Logical Drives" in this chapter for more information.
Initializing Logical Drives
You must initialize each new logical drive you configure. The Initialize menu
selection initializes the logical drives by writing zeros to the data fields and
generating corresponding parity fields on drives with RAID levels 3, 5, 30, or 50.
You can initialize the logical drives in two ways:
•
Batch Initialization: The Initialize option in the Tools Management menu
lets you initialize up to eight logical drives simultaneously.
•
Individual Initialization: The Objects/Logical Drive action menu for an
individual logical drive has an Initialize option.
Batch Initialization
To initialize logical drives by using the batch initialization procedure, following
these steps: