Choosing A Rai D Lev El - NUUO NVRmini 2 User Manual

The dat a capacit y RAI D 10 Volum e equals t he capacit y of t he sm allest disk
driv e t im es t he num ber of disk driv es, divided by t wo.
I n som e cases, RAI D 10 offers double fault t olerance, depending on which disk
driv es fail.
RAI D 10 Volum es on t his unit consist of four disk driv es.
Because all of t he available disk driv es are used for t he RAI D Volum e, y ou
cannot set up a spare driv e wit h RAI D 10.
Ch o o si n g a RA I D Le v el
There are several issues t o consider when choosing t he RAI D lev el. The
following sum m arizes som e advant ages, disadvant ages and applicat ions for
each choice.
RA I D 0
A d v a n t a g e
I m plem ent s a st riped disk RAI D
Volum e, t he dat a is broken down
int o blocks and each block is
writ t en t o a separat e disk drive
I / O perform ance is great ly
D i s a d v a n t a g e
Not a t rue RAI D because it is not
fault t olerant
The failure of j ust one drive will
result in all dat a in a RAI D Volum e
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