MSI K9N2 SLI PLATINUM User Guide - Page 88

Introduction - 5 disk raid spanned

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MS-7374 Mainboard Introduction System Requirement Operating System Support NVRAID supports the following operating systems: W indows XP, W indows Vista RAID Arrays NVRAID supports the following types of RAID arrays described in this section: RAID 0: RAID 0 defines a disk striping scheme that improves the disk read and write times for many applications. RAID 1: RAID 1 defines techniques for mirroring data. RAID 0+1: RAID 0+1 combines the techniques used in RAID 0 and RAID 1 arrays. RAID 5: RAID 5 defines techniques for parity data. Spanning (JBOD): JBOD provides a method for combining drives of different sizes into one large disk Summary of RAID Configurations Array Uses Advantages Drawbacks # Hard Disks RAID 0 Non-critical data requiring high performance. High data throughput. No fault tolerance. multiple RAID 1 Small databases or any other small capacity environment requiring fault tolerance. 100% data redundancy. Requires 2 drives for 2 the storage space of 1 drive. RAID 0+1 Critical data requiring high performance. Optimized for both 100% data redundancy and performance. Allows spare disks. Requires 2 drives for 4+ the storage space of 1 drive-the same as RAID level 1. RAID 5 Critical data and reasonable level of performance. Fault tolerance and Decreased write 3+ better utilization of performance due to disk space. parity calculations. Requires at least three drives. Fault Tolerance None Yes Yes Yes JBOD Combining odd size Combines and uses Decreases Multiple No drives into one big drive the capacity of odd performance because size drives. of the difficulty in using drives concurrently or to optimize drives for different uses. B-2

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MS-7374 Mainboard
B-2
Introduction
System Requirement
Operating System Support
NVRAID supports the following operating systems:
Windows XP, Windows Vista
RAID Arrays
NVRAID supports the following types of RAID arrays described in this section:
RAID 0: RAID 0 defines a disk striping scheme that improves the disk read and write
times for many applications.
RAID 1: RAID 1 defines techniques for mirroring data.
RAID 0+1: RAID 0+1 combines the techniques used in RAID 0 and RAID 1 arrays.
RAID 5: RAID 5 defines techniques for parity data.
Spanning (JBOD): JBOD provides a method for combining drives of different sizes
into one large disk
Summary of RAID Configurations
Array
Uses
Advantages
Drawbacks
# Hard
Disks
Fault
Tolerance
RAID 0
Non-critical data
requiring high
performance.
High data throughput.
No fault tolerance.
multiple
None
RAID 1
Small databases or any
other small capacity
environment requiring
fault tolerance.
100% data
redundancy.
Requires 2 drives for
the storage space of 1
drive.
2
Yes
RAID 0+1
Critical data requiring
high performance.
Optimized for both
100% data
redundancy and
performance.
Allows spare disks.
Requires 2 drives for
the storage space of 1
drive
—
the same as
RAID level 1.
4+
Yes
RAID 5
Critical data and
reasonable level of
performance.
Fault tolerance and
better utilization of
disk space.
Decreased write
performance due to
parity calculations.
Requires at least
three drives.
3+
Yes
JBOD
Combining odd size
drives into one big drive
Combines and uses
the capacity of odd
size drives.
Decreases
performance because
of the difficulty in
using drives
concurrently or to
optimize drives for
different uses.
Multiple
No