Chapter 18: Disaster Recovery Planning

Question 1

This is also called striping. It uses two or more disks and improves the disk subsystem performance, but it does not provide fault tolerance.

Answer 1

RAID-0

Question 2

This is also called mirroring. It uses two disks, which both hold the same data.

Answer 2

RAID-1

Question 3

This is also called striping with parity. It uses three or more disks with the equivalent of one disk holding parity information.

Answer 3

RAID-5

Question 4

This offers an alternative approach to disk striping with parity. It functions in the same manner as RAID-5 but stores parity information on two disks, protecting against the failure of two separate disks but requiring a minimum of four disks to implement.

Answer 4

RAID-6

Question 5

This is also known as RAID 1 + 0 or a stripe of mirrors, and it is configured as two or more mirrors (RAID-1), with each mirror configured in a striped (RAID-0) configuration.

Answer 5

RAID-10

Question 6

A ____system will default to a secure state in the event of a failure, blocking all access.

Answer 6

fail-secure

Question 7

A ____ system will fail in an open state, granting all access.

Answer 7

fail-open

Question 8

In an ____ scenario, database backups are moved to a remote site using bulk transfers.

Answer 8

electronic vaulting