About Raid - LaCie 5big Thunderbolt™ Series User Manual

ABOUT RAID

The LaCie 5big Thunderbolt Series is compatible with a range of RAID options for a variety of uses. It's
preconfigured as a RAID 0 striped set to unleash its full speed potential for data-intensive applications such as
HD video editing. Or opt for a RAID 1 mirrored set for excellent data security. Alternatively, you could go without
RAID and configure it in a JBOD. Since in a JBOD configuration all disks mount independently, many people use
JBOD so that they can assign each disk to a specific data storage task. For instance, you could put backups
performed on Monday on the first disk, Tuesday on the second, etc.
Another use case is a mixed configuration: three disks in a RAID 0 for speed-intensive applications and two disks
in a RAID 1 for backup.
MODIFY RAID
In order to create a RAID array, you'll need two disks (RAID 1) or at least two disks (RAID 0) that aren't already
included in another RAID. Follow the below links for instructions:
Delete a RAID Array
Create a RAID Array
RAID MODE OPTIONS
Striped RAID Set (RAID 0)
A Striped RAID Set pairs the drives within an enclosure for enhanced transfer rates. Data is stored across all
disks in a striped pair, allowing them to share the demands of reading and writing files. Unlike a Mirrored Striped
Set (RAID 1), the available capacities of each disk are added together for maximum storage availability. With its
improved read/write seek rates and maximum storage capacity, a Striped RAID Set is a great complement to
the extraordinary performance already offered by Thunderbolt technology. Data is also easy to access since a
RAID 0 stripe creates one logical volume that mounts on the desktop. One disadvantage of a Striped RAID Set is
the lack of built-in data security. In the event that one disk fails, all the files become inaccessible since parts of
each string of data are written across the striped pair. Therefore, LaCie highly recommends backing up data
stored on a Striped RAID Set at least once a day. You can back up the data to your computer's internal disk or
another storage medium with sufficient capacity.
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