Your customer would like to use ATA drives for their SnapSure SavVol. The I/O access pattern on the PFS is random read. They plan to access the checkpoints randomly as well.

What would you recommend?

A.
ATA drives provide good sequential I/O performance and are suitable for writes to a single SavVol. Random reads to the checkpoint would not be appropriate for ATA drives.

B.
ATA drives provide good random I/O performance which is important for copy-on-first-write activity; therefore would be appropriate for both checkpoint processing and checkpoint access.

C.
ATA drives provide good sequential I/O performance; therefore would not be appropriate for either checkpoint writes to the SavVol, or random access of the checkpoint.

D.
ATA drives provide good random I/O performance; therefore would be a good choice for checkpoint processing as well as checkpoint access.