Intel SC5650BCDP User Manual

10 Intel
®
RAID Software User’s Guide
Selecting a RAID Level
To ensure the best performance, select the optimal RAID level when the system drive is
created. The optimal RAID level for a disk array depends on a number of factors:
• The number of physical drives in the disk array
• The capacity of the physical drives in the array
• The need for data redundancy
• The disk performance requirements
RAID 0 - Data Striping
RAID 0 provides disk striping across all drives in the RAID array. RAID 0 does not provide
any data redundancy, but does offer the best performance of any RAID level. RAID 0 breaks
up data into smaller segments, and then stripes the data segments across each drive in the
array. The size of each data segment is determined by the stripe size. RAID 0 offers high
bandwidth.
Note: RAID level 0 is not fault tolerant. If a drive in a RAID 0 array fails, the whole virtual disk (all
physical drives associated with the virtual disk) will fail.
By breaking up a large file into smaller segments, the RAID controller can use both SAS drive
and SATA drives to read or write the file faster. RAID 0 involves no parity calculations to
complicate the write operation. This makes RAID 0 ideal for applications that require high
bandwidth but do not require fault tolerance.
Figure 1. RAID 0 - Data Striping
Table 1. RAID 0 Overview
Uses
Provides high data throughput, especially for large files. Any environment
that does not require fault tolerance.
Strong Points
Provides increased data throughput for large files. No capacity loss penalty
for parity.
Weak Points
Does not provide fault tolerance or high bandwidth. If any drive fails, all data
is lost.
Drives
1 to 32
RAID Adapter
ABCDEF
A
C
E
B
D
F
Data Striping
RAID 0
Available Capacity
N=# disks
C = Disk Capacity
Available Capacity = N*C
RAID 0

Intel SC5650BCDP Specifications

General

Brand	Intel
Model	SC5650BCDP
Category	Server
Language	English