RAID Advanced Features
While traditionally enterprise level features, OCE & ORLM have become available to consumers at a low cost. Of the RAID cards OWC offers, HighPoint RocketRAID cards support OCE & ORLM as a standard feature. These features offer easy expandability and management to RAID arrays, so you are not locked in to one configuration.Online Capacity Expansion (OCE)
OCE allows for the expansion of a RAID array without the need to take down the system. For example, when a fully functional 3 drive RAID 5 system is getting full, OCE allows a 4th drive to be added in without destroying the existing data.Online RAID Level Migration (ORLM)
ORLM gives the ability to change the type of RAID without destroying the existing data. For example, a 4 drive RAID 0 system can be switched to a 5 drive RAID 5 system. With ORLM you always need to be adding drives to the array.
Learn More About the Types of RAID
RAID 0 (Stripe)
Data is split into blocks over two or more drives at same time for high speed and large capacity.
Capacity
Data Safety
Performance
RAID 1 (Mirror)
Data is written at same time to two drives only for highest level of data safety and redundancy.
Capacity
Data Safety
Performance
RAID 10 (1+0)
Data is Striped (RAID 0) over two Mirrored sets (RAID 1) of drives for fast redundancy.
Capacity
Data Safety
Performance
RAID 5 (Stripe with Parity)
Data is Striped (RAID 0) while incorporating parity over three or more drives for the best combination of speed, capacity, and redundancy.
Capacity
Data Safety
Performance
JBOD
(Just a Bunch Of Disks/Drives)
Each disk shows up as an individual logical volume on the computer. A 4 bay unit populated with drives will have 4 logical drives show up on the computer.
Capacity
Data Safety
Performance
Span (N-RAID)
Combines capacity of two or more drives of varying size without any RAID data distribution scheme into one logical desktop volume.
Capacity
Data Safety
Performance