Raid Settings; Changing The Raid Mode; Raid Modes - OWC MERCURY ELITE PRO DUAL Assembly Manual & User Manual

WARNING: Changing the RAID mode will destroy the
data on the drives. Be sure to back up your data first! See
Section 3.4 for information on proper backup strategies.
IMPORTANT

2.3 RAID Settings

When starting from a power on state, rotate the dial on the back of the enclosure to the
desired RAID mode, then unmount the drive and power off the Elite Pro Dual. Next power on
the Elite Pro Dual. The LEDs on the front will blink for a brief time; once the blinking stops the
drive is ready to use.
When starting from a power off state, rotate the dial on the back of the enclosure to the
desired RAID mode, then power on the Elite Pro Dual. The LEDs on the front will blink for a
brief time; once the blinking stops the drive is ready to use. NOTE: changing the RAID mode
for the Mercury Elite Pro Dual requires an active USB or FireWire connection.
See Section 2.3.2 - "RAID Modes" for more information on each RAID mode that can be
used, and how it differs from the others.

2.3.2 RAID Modes

RAID 0 "Drive Striping" Mode:
The two drives show up as a single large volume with a size equal to the combined
capacities of both drives. RAID 0 is used when speed is the primary objective; it does not
provide data redundancy for protection. The reading and writing of data files is spread
across both drives to gain speed by distributing the workload. This allows for the fastest
data transfer rates, but if one drive fails the whole array becomes corrupted. The data will
be lost. Always maintain a full and separate backup of your RAID 0 data!
RAID 1 "Drive Mirroring" Mode:
The two drives show up as a single volume with a size equal to the capacity of a single
drive from the array. RAID 1 copies (or "mirrors") the data from the first drive to the second
drive. This is useful when reliability and redundancy are more important than capacity
or maximum speed. When one drive fails, it can be replaced and the data can be rebuilt
automatically from the other functioning drive. See Section 2.4 for more details on the
drive replacement and rebuild process.
OWC MERCURY ELITE PRO DUAL

2.3.1 Changing the RAID Mode

The RAID mode is controlled by a dial on the rear of the
unit, as shown at left. The dial has four positions, each
labeled with a different RAID mode. In order to change
the RAID mode, follow the simple steps below.
Adjust the RAID dial so that the arrow is pointing at the
desired RAID mode. Each time the arrow is aligned with
a new mode, you will feel a slight click. A small flathead
screwdriver works the best to adjust the dial.
9
IMPORTANT
DEVICE SETUP