Briefing Amazon Knowledge

which the database cannot be written to and results in a consistent backup?

Which procedure for backing up a relational database on EC2 that is using a set of RAlDed EBS volumes for
storage minimizes the time during which the database cannot be written to and results in a consistent backup?

A.
1. Detach EBS volumes, 2. Start EBS snapshot of volumes, 3. Re-attach EBS volumes

B.
1. Stop the EC2 Instance. 2. Snapshot the EBS volumes

C.
1. Suspend disk I/O, 2. Create an image of the EC2 Instance, 3. Resume disk I/O

D.
1. Suspend disk I/O, 2. Start EBS snapshot of volumes, 3. Resume disk I/O

E.
1. Suspend disk I/O, 2. Start EBS snapshot of volumes, 3. Wait for snapshots to complete, 4. Resume disk I/O

Explanation:

http://media.amazonwebservices.com/AWS_Storage_Options.pdf (page 11)