Raid Configuration (Fw/Usb/Esata Model Only) - OWC Mercury Elite Pro Dual Bay Assembly Instructions Manual

OWC Mercury Elite Pro Dual

2.3 RAID Configuration (FW/USB/eSATA Model ONLY)

To change the RAID settings on your FireWire & USB-equipped enclo-
sure, there are three switches located inside the enclosure that need to
be adjusted. You can access the switches by removing the outer case of
the enclosure, or by removing the clip-in fan at the rear.
WARNING:
The default RAID mode for the OWC Mercury Elite Pro Dual
is RAID 0. When installing drives into this enclosure,
be destroyed
will destroy any data
mode
data before proceeding.
INDEPENDENT - Each hard drive will appear as a separate volume. You
can use different models and sizes of hard drive with this mode. NOTE:
Only FireWire and USB connections support independent mode.
SPAN - The drives show up as one large single volume. Spanning is an
array (not RAID) that is written to sequentially across both hard drives.
By itself, it does not provide any performance or redundancy benefits.
RAID 0 (STRIPE) - The drives show up as one large single volume. It is
highly recommended to use identical hard drives for this RAID method.
RAID 1 (MIRROR) - The drives show up as one volume, but only 50% of
the total capacity can be used. It is highly recommended to use identical
hard drives for this RAID method. RAID 1 creates an exact copy (or "mir-
ror") of a set of data on the second drive. This is useful when reliability
and redundancy are more important than capacity. When one drive fails,
it can be replaced and the data will be rebuilt.
2TB MODE - When switch #1 is in the OFF position, the total capacity of
the drives is limited to a maximum of 2.2TB for compatiblity with older
operating systems. NOTE: If setting switch #1 to ON does not initially
allow volume sizes to exceed 2.2TB, do the following: keeping switch
#1 in the ON position, change to a different RAID level, then turn on the
unit. Format the new RAID volume, then shut off the unit, change to the
desired RAID level (or independent drive mode), and turn on the unit.
unless you select independent mode. Configuring a RAID
stored on the drives. Back up any important
MODE
RAID 1
RAID 0
SPAN
INDEPENDENT
2TB MODE
Chapter 2 - System Setup
existing data will
SW#1 SW#2 SW#3
--- OFF
--- OFF
--- ON
--- ON
ON ---
OFF
ON
OFF
ON
---