HP NetRAID 1 Controller - Manual (Page 53)

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A message box opens to warn you if you select a drive that has already been selected in a different
array.
3. Press the arrow keys to highlight specific physical drives. Press the spacebar to associate the
highlighted physical drive with the current array. The indicator for the selected drive changes
from READY to flashing ONLIN A[array number]-[drive number]. For example, ONLIN
A2-3 means disk drive 3 in array 2. Add physical drives to the current array as desired. Try to
use drives of the same capacity in a specific array. If you use drives with different capacities
in an array, all drives in the array are treated as if they have the capacity of the smallest drive
in the array. The hot key selections listed at the bottom of the screen are:
SPACE Select drive for the array.
ENTER Start the configuration.
F2
View physical drive information.
F3 View logical drive Configured information.
F4 Select the drive as a hot spare.
The number of physical drives in a specific array determines the RAID levels that can be
implemented with the array.
4. Press Enter when you have finished creating the current array. The logical drive configuration
screen appears, prompting you to confirm the configuration settings. The window at the top
of the screen shows the logical drive that is currently being configured as well as any existing
logical drives. The column headings are, from left to right:
LD The logical drive number
RAID The RAID level
Size The logical drive size
#Stripes The number of stripes (physical drives) in the
associated physical array
StrpSz The stripe size
DriveState The state of the logical drive
5. Set the RAID level for the logical drive. Highlight RAID and press Enter. The available
RAID levels for the current logical drive are displayed. Select a RAID level and press Enter
to confirm.
6. Set the stripe size, cache write policy, read policy, and I/O (cache) policy from the Advanced
Menu.
•
Stripe size: This parameter specifies the size of the segments written to each disk in a RAID
logical drive.
•
Write Policy: This option sets the caching method to Write-Back or Write-Through.
•
Read-Ahead: This option 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
selected logical drive.
Press Esc to exit the Advanced Menu.
7. When you have defined the current logical drive, highlight Accept and press Enter. The array
selection screen appears if there are any unconfigured disk drives left.
8. Repeat steps 3 through 7 to configure another array and logical drive. HP NetRAID supports
up to eight logical drives per adapter. When you finish configuring logical drives, press Esc
to exit Easy Configuration. A list of the currently configured logical drives appears as shown
in the following figure.