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 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 specific environment requirements before choosing a RAID level.

Table 25. RAID Level Performance Comparison

RAID Level

Data

Read

Write

Rebuild

Minimum

Suggested

 

Availability

Performanc

Performanc

Performanc

Disks

Uses

 

 

e

e

e

Required

 

 

 

 

 

 

 

 

RAID 0

None

Very Good

Very Good

N/A

N

Noncritical

 

 

 

 

 

 

data.

 

 

 

 

 

 

 

RAID 1

Excellent

Very Good

Good

Good

2N (N = 1)

Small

 

 

 

 

 

 

databases,

 

 

 

 

 

 

database

 

 

 

 

 

 

 

213

Page 213
Image 213
Dell iDRAC8 manual Comparing RAID Level Performance