User's Manual

p.17
Using RAID Modes
Supported RAID Modes
G -RAID with Thunderbolt is precongured in RAID 0 (Performance) mode, for use with Mac
OS systems. The drive can also be congured in RAID 1 (Protected) mode or JBOD (Just a
Bunch of Disks) mode. The following table explains the advantages and disadvantages for
each RAID level.
To change the RAID mode of G-RAID with Thunderbolt, follow the steps in
Congure the RAID Mode.
RAID 0 (Performance)
G-RAID with Thunderbolt ships in RAID 0 (Performance) mode. This RAID mode is ideal for
maximizing your throughput when video editing. In RAID 0 mode, the drives are combined
and data is split between the two drives for increased performance.
RAID 1 (Protected)
RAID 1 is great for protecting and securing data, making it ideal for sensitive data, but it
operates at the speed of a single drive. In RAID 1, the array will be at 50 percent of its total
capacity as the same data is written or mirrored to both drives simultaneously.
JBOD (Just a Bunch of Disks)
JBOD mode is great for maximum capacity utilization without fear of losing all your data,
as in the case of RAID 0, but they each operate at the speed of a single drive. Each drive shows
up as it’s own separate volume or storage location.
RAID Level Description Advantage Disadvantage Ideal For
RAID 0 Disk Striping
Highest read/write
performance. Storage
capacity is 100%
utilized.
No fault tolerance. Single
drive failure will result in
complete data loss.
Highest storage capacity
utilization and highest
performance.
RAID 1 Disk Mirroring
Complete data
protection in case of a
single drive failure.
Read/write performance is
reduced to half of RAID 0
performance.
Sensitive data which requires
constant backing up. High
performance not required.
JBOD
Disk not
RAIDed
Storage capacity is
100% utilized. Partial
data protection if a
single drive fails.
Read/write performance is
reduced to half of RAID 0
performance.
Highest storage capacity
utilization when partial data
loss is acceptable.