Advanced Configurations
12-1
Array Expansion
The array expansion functions allow you to expand storage capacity
without the costs on buying new equipment. The expansion can be
completed on-line while system is serving host I/Os.
This chapter is organized as follows:
12. 1 Overview
Note on using the expansion functions
12.2 Mode 1 Expansion
Theory and configuration procedure: expansion
by adding drives
12.3 Mode 2 Expansion
Theory and configuration procedure: expansion
by copying and replacing drives
12.4 Making Use of the Added Capacity
Configuration procedure of the Expand function
for logical drive
12.5 Expand Logical Volume
Configuration procedure of the Expand function
for logical volume
12.6 Configuration Example: Volume Extension in Windows 2000
12.1 Overview
What is it and how does it work?
Before the invention of RAID Expansion, increasing the capacity of a
RAID system meant backing up all data in the disk array, re-creating
disk array configuration with new drives, and then restoring data
back into system.
Infortrend’s RAID Expansion technology allows users to expand a
logical drive by adding new drives, or replacing drive members
with drives of larger capacity. Replacing is done by copying data
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