Users Guide

RAID 10 characteristics:
• Groups n disks as one large virtual disk with a capacity of (n/2) disks, where n is an even integer.
• Mirror images of the data are striped across sets of physical disks. This level provides redundancy through mirroring.
• When a disk fails, the virtual disk still works. The data is read from the surviving mirrored disk.
• Improved read performance and write performance.
• Redundancy for protection of data.
Comparing RAID Level And Concatenation
Performance
The following table compares the performance characteristics associated with the more common RAID levels. This table provides general
guidelines for choosing a RAID level. Evaluate your specic environment requirements before choosing a RAID level.
NOTE
: The following table does not show all supported RAID levels in Storage Management. For information on all supported
RAID levels in Storage Management, see Choosing RAID Levels And Concatenation.
Table 1. RAID Level and Concatenation Performance Comparison
RAID Level Data Availability Read
Performance
Write
Performance
Rebuild
Performance
Minimum Disks
Required
Suggested Uses
Concatenation No gain No gain No gain N/A 1 or 2 depending
on the controller
More cost
ecient than
redundant RAID
levels. Use for
noncritical data.
RAID 0 None Very Good Very Good N/A N Noncritical data.
26 Understanding RAID concepts