HP 5300 - Manual (Page 55)

Configuring an Array
HP Smart Array 5300 Controller User Guide 7-13
HP CONFIDENTIAL
Writer: Jennifer Hayward File Name: h-ch7 configuring an array
Codename: SilverHammer Part Number: 135606-005 Last Saved On: 10/8/02 11:15 AM
Figure 7-11: Create Logical Drive screen
Three features on this screen merit further description:
• Stripe Size box
• Logical Drive Size box
• Advanced button
The Stripe Size box has a drop-down list that lets you select the width of a data
stripe. (This width corresponds to the size of a data block on each hard drive in the
logical volume, as described in Appendix D).
Each RAID level supports several stripe widths (Table 7-2); the default stripe size
initially displayed by ACU is chosen for optimum performance under the most
common operating conditions. Table 7-3 suggests how to change the stripe width to
optimize system performance for different types of application.
Table 7-2: Supported Stripe Sizes for a Given RAID Level
Fault Tolerance Level Supported Stripe Sizes (KB) Default (KB)
RAID 0, RAID 1+0 8, 16, 32, 64, 128, 256 128
RAID 5, RAID ADG 8, 16, 32, 64 16