Gateway 860 Raid 1Raid 1 Raid 0, Raid 5 Disk 1 Disk 2 Disk 3 Disk 4

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Chapter 1: Overview
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Hardware RAID layout
The NAS is recognized by the host computer’s operating system as two logical
drives. The two logical drives are configured to RAID levels 0+1 and 5. The
system volume, installed with the host operating system, is organized as
RAID 0+1 and the data volume is organized as RAID 5.
The volume layout for the NAS is illustrated below.
Volume configuration
The organized volumes on the NAS include:
■System volume
This volume is organized as a RAID 0+1 volume. This volume includes the
operating system image. The default size for this volume is 10GB . Use the
RAID Volume Configuration utility to configure the size. For more
information on how to use the RAID Volume Configuration utility, see
“RAID Configuration” on page 54.
■Data volume
The remaining hard drive space is organized as the data volume using
RAID 5. For a NAS installed with four 120 GB hard drives, the data volume
size can be set to 345 G B.
Raid 1Raid 1 Raid 0
Raid 5
Disk 1 Disk 2 Disk 3 Disk 4