Asus PCI-DA2200 - Manual (Page 31)

3-21 ASUS PCI-DA2200 User’s Manual
3.6 Dynamic Logical Drive Expansion
3.6.1 What Is It and How Does It Work?
Before Dynamic Logical Drive Expansion, increasing the capacity of a
RAID system using traditional methods meant backing up, re-
creating and then restoring. Dynamic Logical Drive Expansion allows
users to add new SCSI hard disk drives and expand a RAID 0, 3 or 5
Logical Drive without powering down the system.
3.6.2 Two Modes of Dynamic Logical Drive Expansion
There are two modes of Dynamic Logical Drive Expansion: Mode 1
and Mode 2.
On-line RAID Expansion
Mode 1 Mode 2
Mode 1 Expansion involves adding more SCSI hard disk drives to a
logical drive, which may require that the user obtain an enclosure
with more drive bays. The data will be re-striped onto the original
and newly added disks.