introduction
System Requrement
Operatng System Support
NVRAID supports the followng operatng systems:
Wndows XP, Wndows Vsta
RAID Arrays
NVRAID supports the followng types of RAID arrays descrbed n ths secton:
RAID 0: RAID 0 denes a dsk strpng scheme that mproves the dsk read and
wrte tmes for many applcatons.
RAID 1: RAID 1 denes technques for mrrorng data.
RAID 0+1: RAID 0+1 combnes the technques used n RAID 0 and RAID 1 ar
-
rays.
RAID 5: RAID 5 denes technques for party data.
Spannng (JBOD): JBOD provdes a method for combnng drves of derent szes
nto one large dsk
Summary of RAID Conguratons
Array Uses Advantages Drawbacks #Hard Dsks Fault Tolerance
RAID 0 Non-crtcal data
requrng hgh per-
formance.
Hgh data through-
put.
No fault tolerance. multple None
RAID 1 Small databases
or any other small
capacty envron-
ment requrng fault
tolerance.
100% data redun-
dancy.
Requres 2 drves
for the storage
space of 1 drve.
2 Yes
RAID 0+1 Crtcal data requr-
ng hgh perfor-
mance.
Optmzed for both
100% data redun-
dancy and perfor-
mance. Allow spare
dsks.
Requres 2 drves
for the storage
space of 1 drve -
the same as RAID
level 1.
4+ Yes
RAID 5 Crtcal data and
reasonable level of
performance.
Fault tolerance and
better utlzaton of
dsk space.
Decreased wrte
performance due to
party calculatons.
Requres at least
three drves.
3+ Yes
JBOD Combnng odd
sze drves nto one
bg drve.
Combnes and
used the capacty
of odd sze drves.
Decreases perfor-
mance because of
the dculty n us-
ng drves concur-
rently or to optmze
drves for derent
uses
Multple No
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