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
Correct Answer: D
Explanation/Reference:
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.
