A customer backs up a database using tools provided by the vendor. The backup files are
written to a filesystem that was initially created for use by the database, but the backup takes
an unexpectedly long time. Which of the following methods will decrease the time required
for backups?

A.
Use the vmo command to increase WriteBehind.

B.
Switch on Concurrent I/O for target filesystems.

C.
Switch off Concurrent I/O for target filesystems.

D.
Use the backup tools provided with the operating system.