Raid Settings; Changing The Raid Mode - OWC Mercury Elite Pro Dual mini Assembly Manual & User Manual

2.3 RAID SETTINGS

!
WARNING: Changing the RAID mode will destroy the
data on the drives. Be sure to back up your data first! See
section 3.2 for information on proper backup strategies.

2.3.1 Changing the RAID Mode

The RAID mode on the Mercury Elite Pro Dual mini is controlled by a set of three DIP
(dual in-line package) switches located in a blue block inside the enclosure. Section
2.2, Assembly shows how to access the DIP switches.
The switches are labeled 1, 2, and 3, and the blue block has the word 'ON' at the top.
The 'ON' position for each switch is toward the word 'ON', while the 'OFF' position
for each switch is toward the numbers. The following chart shows the switch posi-
tions that correspond to each RAID mode. See Section 2.3.2, RAID Modes for more
information on each RAID mode that can be used.
MODE
RAID 1
RAID 0
SPAN
2TB MODE
2TB MODE — Switch #1 has no effect on the RAID mode. Instead, it controls the 2TB
volume limitation. When switch #1 is in the OFF position, the total capacity of the
drives is limited to a maximum of 2TB for compatiblity with older operating systems.
NOTE:
• If setting switch #1 to ON does not initially allow volume sizes to exceed 2TB, do the
following: keeping switch #1 in the ON position, change to a different RAID mode,
then turn on the Mercury Elite Pro Dual mini. Format the new RAID volume, then
shut off the Mercury Elite Pro Dual mini, change to the desired RAID mode, and turn
on the Mercury Elite Pro Dual mini.
• When 2TB mode is enabled, PowerPC Macs and Intel Macs introduced before 2008
cannot use the OWC Mercury Elite Pro Dual mini as a startup drive over the FireWire
connection. This is a limitation of these computers. Mac models introduced in 2008
and later are fully capable of using the OWC Mercury Elite Pro Dual mini as a startup
drive over FireWire, even with 2TB mode enabled. Note that this only affects FireWire
booting. All Intel Macs are still able to use the OWC Mercury Elite Pro Dual mini as a
startup drive over USB, regardless of whether 2TB mode is enabled.
OWC MERCURY ELITE PRO DUAL MINI
SW#1 SW#2
--- OFF
--- OFF
--- ON
ON ---
7
!
SW#3
OFF
ON
OFF
---
SYSTEM SETUP