HP 273914-B21 Smart Array 6400 Series Controllers User Guide - Page 25

Configuring an array, Introduction

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25 Configuring an array In this section Introduction ...25 Comparing the utilities ...26 Using ORCA ...27 Using ACU ...28 Using CPQONLIN ...28 Introduction HP provides three utilities for manually configuring an array on a Smart Array controller: • ORCA-A simple ROM-based configuration utility • ACU-A versatile, browser-based utility that provides maximum control over configuration parameters • CPQONLIN-A menu-based configuration utility specifically for servers using Novell NetWare NOTE: To copy a particular array configuration to several other servers on the same network, use ACR or the scripting capability of ACU. ACR is provided in the SmartStart Scripting Toolkit, available on the HP website (http://www.hp.com/servers/sstoolkit). Whichever utility you use, the following limitations apply: • For the most efficient use of drive space, do not mix drives of different capacities within the same array. The configuration utility treats all physical drives in an array as if they have the same capacity as the smallest drive in the array. The excess capacity of any larger drives is wasted because it is unavailable for data storage. • The probability that an array will experience a drive failure increases with the number of physical drives in the array. If you configure a logical drive with RAID 5, keep the probability of failure low by using no more than 14 physical drives in the array.

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25
Configuring an array
In this section
Introduction
..................................................................................................................................
25
Comparing the utilities
.................................................................................................................
26
Using ORCA
................................................................................................................................
27
Using ACU
...................................................................................................................................
28
Using CPQONLIN
.......................................................................................................................
28
Introduction
HP provides three utilities for manually configuring an array on a Smart Array
controller:
•
ORCA—A simple ROM-based configuration utility
•
ACU—A versatile, browser-based utility that provides maximum control
over configuration parameters
•
CPQONLIN—A menu-based configuration utility specifically for servers
using Novell NetWare
NOTE:
To copy a particular array configuration to several other servers
on the same network, use ACR or the scripting capability of ACU. ACR
is provided in the SmartStart Scripting Toolkit, available on the HP
website (
).
Whichever utility you use, the following limitations apply:
•
For the most efficient use of drive space, do not mix drives of different
capacities within the same array. The configuration utility treats all physical
drives in an array as if they have the same capacity as the smallest drive in
the array. The excess capacity of any larger drives is wasted because it is
unavailable for data storage.
•
The probability that an array will experience a drive failure increases with
the number of physical drives in the array. If you configure a logical drive
with RAID 5, keep the probability of failure low by using no more than 14
physical drives in the array.