Intel SC5650BCDP User Manual

Intel
®
RAID Software User’s Guide 15
Table 6. RAID 10 Overview
Figure 6. RAID 10 - Combination of RAID 1 and RAID 0
RAID 50 - Combination of RAID 5 and RAID 0
RAID 50 provides the features of both RAID 0 and RAID 5. RAID 50 includes both parity and
disk striping across multiple arrays. RAID 50 is best implemented on two RAID 5 disk arrays
with data striped across both disk groups.
RAID 50 breaks up data into smaller blocks and then stripes the blocks of data to each RAID 5
disk set. RAID 5 breaks up data into smaller blocks, calculates parity by performing an
exclusive-or on the blocks and then writes the blocks of data and parity to each drive in the
array. The size of each block is determined by the stripe size parameter, which is set during the
creation of the RAID set.
RAID level 50 supports up to eight spans and tolerates up to eight drive failures, though less
than total disk drive capacity is available. Though multiple drive failures can be tolerated, only
one drive failure can be tolerated in each RAID 1 level array.
Table 7 provides an overview of RAID 50.
Uses
Appropriate when used with data storage that requires 100 percent
redundancy of mirrored arrays and that needs the enhanced I/O
performance of RAID 0 (striped arrays). RAID 10 works well for medium-
sized databases or any environment that requires a higher degree of fault
tolerance and moderate to medium capacity.
Strong Points
Provides both high data transfer rates and complete data redundancy.
Weak Points
Requires twice as many drives as all other RAID levels except RAID 1.
Drives
4 - 240
RAID Adapter
ABCDEF
Disk Mirror
&
Data Striping
RAID 10
Available Capacity
N=# disks
C = Disk Capacity
Available Capacity =
(N*C) /2
A
C
E
A
C
E
B
D
F
B
D
F
Stripe Set
Mirror Set
RAID 10

Intel SC5650BCDP Specifications

General

Brand	Intel
Model	SC5650BCDP
Category	Server
Language	English