How does Isilon SnapshotIQ use storage for snapshots?

Question

Accepted Answer

A. Uses Changed Block Tracking and only saves the changed data blocks

Answer

B. Works on the file level and saves the entire file no matter what has changed

Answer

C. Works with 4 KiB blocks and will always use that amount of storage, no matter what has changed

Answer

D. Uses Changed Block Tracking but always uses a 4 KiB block, even if the data changed is less than

Question