HP NetRAID 1 Controller - Manual (Page 57)

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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.
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 later in
this section.
Initializing Logical Drives
You should initialize each new logical drive that you configure. You can initialize the logical drives
in two ways:
•
Batch Initialization: The Initialize option in the 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.
NOTE A 5-drive (ST32550W 2 GB) RAID 5 array takes 620 seconds to initialize 10 GB
of logical capacity, equivalent to 16.5 MB/s (physical capacity to initialize).
Batch Initialization
To initialize logical drives by using the batch initialization procedure, following these steps:
1. Choose Initialize from the HP NetRAID Express Tools Management Menu. A list of the
current logical drives appears.
2. Press the arrow keys to highlight the drives. Press the spacebar to select the highlighted
logical drive for initialization. Press F2 to select/deselect all logical drives.
3. When you finish selecting logical drives, press F10 and choose Yes at the confirmation
prompt. Initialization progress is displayed for each drive.
4. When initialization is complete, press any key to continue. Press Esc to return to the
Management Menu.
Individual Initialization
To initialize logical drives by using the individual initialization procedure, follow these steps:
1. Choose the Objects option from the HP NetRAID Express Tools Management Menu. Choose
the logical drive option from the Objects menu.