Your network contains a server named Server1 that runs Windows Server 2008 R2.

You install three new hard disk drives on Server1. The drives are identical in size.

You need to create a volume by using the three new disk drives.

The volume must meet the following requirements:

* Provide the maximum amount of usable storage.
* Provide the fastest read/write performance available.

Which type of volume should you create?

A.
mirrored

B.
RAID-5

C.
spanned

D.
striped

Explanation:
RAID 0 – Striped
+ Fast, reads and writes to all disks at the same time
+ Flexible, can be used with any number of disks
+ Cheap, uses all disks in the array for data.
– Non redundant
– Dangerous: failure risk increases with every disk added to the array. If one disk failes all data is lost.

RAID 1 – Mirrored
– Slow, needs to write the same data to all disks,
– Inflexible, needs an even number of disks.
– Costly, only 50% of the available total disk space can be used (the other 50% is used for the mirror)
+ Redundant
+ Safe

RAID 5 – Striped with distributed parity
+ Fast, reads and writes to all – 1 disks at the same time
+ Flexible, can be used with any number of disks, but needs atleast 3.
+ Less expensive, uses all – 1 disks in the array for data. Penalty is max 33%, penalty shrinks with every disk added to the array.
+ Redundant
+ Safe

Spanned – Just a Bunch Of Disks
– Slow, writes to one disk, untill it is filled up.
+ Flexible, can be used with any number of disks
+ Cheap, used all disks in the array for data.
– Non redundant
– Dangerous: failure risk increases with every disk added to the array. If one disk failes all data may be lost.