MSI NF750-G55 User Guide - Page 92

RAID Arrays

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▍ NVIDIA RAID 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 RAID 0 Non-critical data requiring high performance. High data throughput. No fault tolerance. multiple RAID 1 Small databases 100% data redun- Requires 2 drives 2 or any other small dancy. for the storage capacity environ- space of 1 drive. ment requiring fault tolerance. RAID 0+1 Critical data requir- Optimized for both Requires 2 drives 4+ ing high perfor- 100% data redun- for the storage mance. dancy and perfor- space of 1 drive - mance. Allow spare the same as RAID disks. level 1. RAID 5 Critical data and Fault tolerance and Decreased write 3+ reasonable level of better utilization of performance due to performance. disk space. parity calculations. Requires at least three drives. JBOD Combining odd size drives into one big drive. Combines and used the capacity of odd size drives. Decreases performance because of the difficulty in using drives concurrently or to optimize drives for different uses Multiple Fault Tolerance None Yes Yes Yes No B-2

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B-2
NVIDIA RAID
▍
i
ntroduction
System Requ±rement
Operat±ng System Support
NVRAID supports the follow±ng operat±ng systems:
W±ndows XP, W±ndows V±sta
RAID Arrays
NVRAID supports the follow±ng types of RAID arrays descr±bed ±n th±s sect±on:
RAID 0: RAID 0 defines a d±sk str±p±ng scheme that ±mproves the d±sk read and
wr±te t±mes for many appl±cat±ons.
RAID 1: RAID 1 defines techn±ques for m±rror±ng data.
RAID 0+1: RAID 0+1 comb±nes the techn±ques used ±n RAID 0 and RAID 1 ar-
rays.
RAID 5: RAID 5 defines techn±ques for par±ty data.
Spann±ng (JBOD): JBOD prov±des a method for comb±n±ng dr±ves of d±fferent s±zes
±nto one large d±sk
Summary of RAID Configurat±ons
Array
Uses
Advantages
Drawbacks
#Hard D±sks
Fault Tolerance
RAID 0
Non-cr±t±cal
data
requ±r±ng h±gh per-
formance.
H±gh data through-
put.
No fault tolerance.
mult±ple
None
RAID 1
Small
databases
or any other small
capac±ty
env±ron-
ment requ±r±ng fault
tolerance.
100% data redun-
dancy.
Requ±res 2 dr±ves
for
the
storage
space of 1 dr±ve.
2
Yes
RAID 0+1
Cr±t±cal data requ±r-
±ng
h±gh
perfor-
mance.
Opt±m±zed for both
100% data redun-
dancy and perfor-
mance. Allow spare
d±sks.
Requ±res 2 dr±ves
for
the
storage
space of 1 dr±ve -
the same as RAID
level 1.
4+
Yes
RAID 5
Cr±t±cal
data
and
reasonable level of
performance.
Fault tolerance and
better ut±l±zat±on of
d±sk space.
Decreased
wr±te
performance due to
par±ty calculat±ons.
Requ±res at least
three dr±ves.
3+
Yes
JBOD
Comb±n±ng
odd
s±ze dr±ves ±nto one
b±g dr±ve.
Comb±nes
and
used the capac±ty
of odd s±ze dr±ves.
Decreases perfor-
mance because of
the d±fficulty ±n us-
±ng dr±ves concur-
rently or to opt±m±ze
dr±ves for d±fferent
uses
Mult±ple
No
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