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40 Understanding RAID Concepts
RAID 0 Characteristics:
•Groups
n
disks as one large virtual disk with a capacity of (smallest disk
size)*
n
disks.
• Data is stored to the disks alternately.
• No redundancy data is kept. When a disk fails, the large virtual disk fails
with no means of rebuilding the data.
• Better read and write performance.
Related Information:
• Organizing Data Storage for Availability and Performance
• Comparing RAID Level and Concatenation Performance
• Controller-supported RAID Levels
• Number of Physical Disks per Virtual Disk
• Maximum Number of Virtual Disks per Controller
RAID Level 1 (Mirroring)
RAID 1 is the simplest form of maintaining redundant data. In RAID 1, data
is mirrored or duplicated on one or more physical disks. If a physical disk on
one side of the mirror fails, then the data can be rebuilt using the physical
disk on the other side of the mirror.