R2.3 Understanding RAID Configurations and JBOD

What does RAID 0 provide?

• Data redundancy

• Increased performance

• Decreased performance

• Fault tolerance

How many disks are required at minimum for RAID 1?

• Four disks

• Two disks

• One disk

• Three disks

What is the overhead for RAID 1 with two disks?

• 25%

• 50%

• 33%

• No overhead

Which RAID level uses striping with distributed parity?

• RAID 1

• RAID 10

• RAID 5

• RAID 0

What is the overhead in a RAID 5 set with 4 disks?

• 25%

• 50%

• 20%

• 33%

What happens if two disks in the same mirrored pair of a RAID 10 array fail?

• All data is lost

• Data is still safe

• Data can be partially recovered

• System performance increases

What is JBOD an acronym for?

• Joint Backup On Disk

• Justified Block of Data

• Joint Binary Object Disk

• Just a Bunch Of Disks

What does JBOD use for data storage?

• Parity

• Mirroring

• Striping

• Entire space available on all disks

Which RAID configuration requires a minimum of three disks?

• RAID 5

• RAID 10

• RAID 1

• RAID 0

What is the fault tolerance capability of RAID 0?

• Tolerates multiple disk failures

• Provides fault tolerance only with additional configuration

• Tolerates one disk failure

• Does not provide fault tolerance