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RAID 0
RAID 0 provides disk striping across all hard disk drives in the volume. RAID 0 does not
provide any data redundancy, but does offer the best performance of any RAID level.
RAID 0 breaks up data into smaller blocks and then writes a block to each hard disk drive
in the volume. The size of each block is determined by the stripe size parameter, set
during the creation of the RAID set. RAID 0 offers high bandwidth.
By breaking up a large file into smaller blocks, StorTrends® iTX Software can use
multiple IDE/SCSI channels and hard disk drives to read or write to the file faster. RAID
0 involves no parity calculations to complicate the write operation. This makes RAID 0
ideal for applications that require high bandwidth but do not require fault tolerance.
Point
Description
uses
RAID 0 provides high data throughput, especially for large files. Any environment that does not
require fault tolerance.
strong points
Provides increased data throughput for large files. No capacity loss penalty for parity.
weak points
Does not provide fault tolerance. All data lost if any hard disk drive fails.
hard disk drives
One to 32 hard disk drives
RAID 1
RAID 1 duplicates all data from one hard disk drive to a second hard disk drive. RAID 1
provides complete data redundancy, but at the cost of doubling the required data storage
capacity.
Point
Description
uses
Use RAID 1 for small databases or any other environment that requires fault tolerance but small
capacity.
strong points
RAID 1 provides complete data redundancy. RAID 1 is ideal for any application that requires
fault tolerance and minimal capacity.
weak points
RAID 1 requires twice as many hard disk drives. Performance is impaired during hard disk drive
rebuilds.
hard disk drives
Two hard disk drives
Appendix A : RAID 215
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