Raid

How many disks does Raid 0 require?

2

How many disks are required for RAID 1?

2 disks using 2 controllers

How many disks are required for RAID 5?

3 disks. Data and Parity are written across all 3 in stripes

What % of the disk is utilized in RAID 5?

66% across 3 disks

What is RAID 50

A mixture of RAID 5, and RAID 0. Data is striped with Parity across each set of 3 disks, and striped between the remaining 3 disks

What are the advantages of RAID 1?

High performance, Very high fault tolerance/redundancy

What is an advantage of RAID 0

Highest performance of all Raid Configurations

What is an alternative to RAID 1?

Same as disk duplexing, but using one raid controller

What is RAID 10?

A mix of Raid 1 and Raid 0 (Mirrored across 2 drives, and striped across the other 2 drives)

How many drives does RAID 10 require?

4 drives (2 for mirroring, 2 for striping)

What % of the disk is utilized in RAID 1?

50%

How many disks are required for RAID 50?

6 (3 for striping with parity, 3 for striping)

What is RAID 1?

Disk Duplexing

What is Raid 0?

Disk striping.

What is a disadvantage of RAID 0

No fault tolerance, and no redundancy

What is the fault tolerance for Raid 0

There is no fault tolerance. If one drive fails, all data is lost