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FastTrak SX4100 User Manual
Expansion takes place on an existing Functional logical drive without disturbing
the existing data. While the logical drive is expanding, you can access the data as
before. When expasion is complete, your logical drive will have a larger capacity.
Level
RAID 5
RAID 0
RAID Level Migration
To migrate a logical drive is to do one or both of the following:
•
Change its RAID level
•
Increase the number of disk drives (sometimes called Expansion)
The FastTrak SX4100 RAID Controller card supports RAID Level Migration.
However, you must use the WebPAM software to access this function. WebPAM
ships with the FastTrak SX4100 card on the software CD.
Migration takes place on an existing Functional logical drive without disturbing
the existing data. While the logical drive is migrating, you can access the data as
before. When migration is complete, your logical drive will have a different RAID
level and/or a larger capacity.
Different types of logical drives use different organizational models and have
varying benefits. The following outline breaks down the properties for each type
of RAID supported by Promise products.
From
RAID 10
RAID 5
RAID 1
RAID 0
Current Number
of Drives
To
Capacity Performance
RAID 5
RAID 0
RAID 10
RAID 0
RAID 10
RAID 5
RAID 0
RAID 10
Possible Number
3
3
2
1
Increase
•
•
•
•
•
•
•
•
•
•
•
•
•
•
44
of Drives
4
4
3 or 4
2, 3 or 4
Redundancy
Add
•
Lose
•
•
•
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