Raid 10 Overview - Lenovo ThinkServer RD240 Software User's Manual

RAID 10
Segment 1
Segment 5
...
RAID1
2.5.9 RAID 50
2-24
span. You must use an even number of drives in each RAID 10 virtual
drive in the span.
Note: Other factors, such as the type of controller, can restrict the
number of drives supported by RAID 10 virtual drives.
Table 2.10 provides an overview of RAID 10.
Table 2.10

RAID 10 Overview

Uses
Strong Points
Weak Points
Drives
In Figure 2.10, virtual drive 0 is created by distributing data across four
drive groups (drive groups 0 through 3).
Figure 2.10 RAID 10 Level Virtual Drive
Segment 1
Segment 2
Duplicate
Segment 5
Segment 6
Duplicate
...
RAID1
RAID 50 provides the features of both RAID 0 and RAID 5. RAID 50
includes both parity and disk striping across multiple drive groups. RAID
Introduction to RAID
Appropriate when used with data storage that needs
100 percent redundancy of mirrored drive groups and
that also needs the enhanced I/O performance of RAID
0 (striped drive groups.) RAID 10 works well for
medium-sized databases or any environment that
requires a higher degree of fault tolerance and moderate
to medium capacity.
Provides both high data transfer rates and complete
data redundancy.
Requires twice as many drives as all other RAID levels
except RAID 1.
4 - the maximum number of drives supported by the
controller (with a maximum of eight spans)
Segment 2
Segment 3
Duplicate
Segment 6
Segment 7
Duplicate
...
RAID1
RAID 0
Segment 3
Segment 4
Duplicate
Segment 7
Segment 8
Duplicate
...
RAID1
Segment 4
Duplicate
Segment 8
Duplicate