Portable Media Storage User Manual

RAIDBank5 Owner’s Manual

RAID 0 (Striping)

This RAID algorithm writes data across multiple disk drives instead of just one disk drive. RAID

0 does not provide any data redundancy, but

does offer the best high-speed data throughput.

RAID 0 breaks up data into smaller blocks and

then writes a block to each drive in the array.

Pros: Disk striping enhances both read and

write performance because multiple drives

are accessed simultaneously

Cons: The reliability of RAID Level 0 is less than

any of its member disk drives due to its lack

of redundancy.

Disk Spanning

This RAID algorithm writes data to multiple disk

drives sequentially. Spanning does not provide

any data redundancy, and is only as fast as a

single disk drive.

Pros: Disk spanning provides a large logical

volume from multiple smaller disks. The

entire disk capacity is available for user

access.

Cons: No fault tolerance, speed equivalent to a

single disk.

RAID 1 (Disk Mirroring, Cloning)

RAID 1, also known as “disk mirroring”, distributes

duplicate data simultaneously to 2 disk drives.

Pros: RAID 1 offers extremely high data reliability

as all the data is redundant. If one drive

fails, all data (and software applications)

are preserved on the other drive. Read

performance may be enhanced as the

array controller can access both members

of a mirrored pair in parallel.

Cons: RAID 1 volume requires double the raw

data storage capacity. During writes, there will be a minor performance penalty when

compared to writing to a single disk.

Disk Spanning

2-Understanding RAID