HP 226593-B21 Smart Array 5i Plus Controller and Battery Backed Write Cache En - Page 35
Configuring an Array, NetWare Online Array Configuration CPQONLIN Utility
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7 Configuring an Array Compaq provides four utilities for configuring an array: • Option ROM Configuration for Arrays (ORCA)-a simple ROM-based configuration utility that runs on all operating systems • Array Configuration Utility (ACU)-a versatile configuration utility that provides maximum control over configuration parameters • Array Configuration Utility-XE (ACU-XE)-a browser-based version of ACU that can be used remotely on systems that are also running Compaq Insight Manager XE • NetWare Online Array Configuration (CPQONLIN) Utility-a menu-driven utility for NetWare The following limitations apply to all configuration methods: • For the most efficient use of drive space, do not mix drives of different capacity within the same array. Each configuration utility treats all physical drives in an array as if they have the same capacity as the smallest drive in the array. Excess capacity of larger drives is wasted because it is unavailable to the array. • Only one online spare drive can be assigned per array. • The probability that an array will experience a hard drive failure increases with the number of hard drives in the array (see Appendix D). If you configure an array with RAID 5, keep the probability of failure acceptably low by using no more than 14 drives. Compaq Smart Array 5i Plus Controller and Battery Backed Write Cache Enabler User Guide 7-1