OWC Mercury Elite Pro Dual mini Chapter 2 - System Setup
2.2 RAID Conguration (continued)
The OWC Mercury Elite Pro Dual mini is able to utilize the 2 hard drives in
3 dierent RAID modes; Disk Spanning (SPAN), Disk Striping (RAID-0), or
Disk Mirroring (RAID-1). You need to choose the RAID mode that suits your
needs properly.
The OWC Mercury Elite Pro Dual mini also is able to utilize drives in “Single
Drive” mode. This is useful if you have two drives of dierent capacities or
speeds and wish to install them in the enclosure, without the benet of a
RAID.
Disk Spanning
The drives show up as one large single volume. The total size will depend
on the drives installed, you can use drives of dierent capacities. Spanning
is an array (not RAID) that is written sequentially to, across the hard drives.
By itself, it does not provide any performance or redundancy benets.
Disk Striping (RAID 0)
The drives show up as one large (single) volume. It is highly recommended
to use identical hard drives for this RAID method. However, you can utilize
drives of dierent capacity, but realize that the RAID size will be based on
the smallest capacity total of the drives used in the RAID set.
Disk Mirroring (RAID 1)
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. However,while you can utilize drives of dierent capacity, the
RAID size will be based on the smallest capacity total of the drives used
in the RAID set. RAID 1 creates an exact copy (or “mirror”) of a set of data
on the second drive. This is useful when reliability and backup are more
important than capacity. When one drive fails, it can be replaced and the
data rebuilt.
Storage Capacity
Data Safety
Performance
Storage Capacity
Data Safety
Performance
Storage Capacity
Data Safety
Performance
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