Choosing A Raid Level - NUUO NVRmini 2 User Manual

The data capacity RAID 10 Volume equals the capacity of the smallest disk
drive times the number of disk drives, divided by two.
In some cases, RAID 10 offers double fault tolerance, depending on which disk
drives fail.
RAID 10 Volumes on this unit consist of four disk drives.
Because all of the available disk drives are used for the RAID Volume, you
cannot set up a spare drive with RAID 10.

Choosing a RAID Level

There are several issues to consider when choosing the RAID level. The
following summarizes some advantages, disadvantages and applications for
each choice.
RAID 0

Advantage
Implements a striped disk RAID

Volume, the data is broken down
into blocks and each block is
written to a separate disk drive
I/O performance is greatly

Disadvantage
Not a true RAID because it is not

fault tolerant
The failure of just one drive will

result in all data in a RAID Volume
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