What is FlexClone and how is it useful?

• A. Creates a read-only clone of a volume
• B. Creates a backup copy of a volume
• C. Creates a remote replica
• D. Creates a writable clone of a volume or snapshot, enabling rapid test/dev without duplicating data

Answer: (D)

FlexClone creates a writable clone of a volume or a snapshot by using a copy-on-write mechanism. The clone initially shares data blocks with the source, and when either side writes to a block, a new block is allocated for the change. This makes the clone instant to provision and space-efficient because no full data copy is made upfront.

Why this is useful: it lets you spin up test, development, or QA environments quickly without duplicating all data. You can start from a known point in time by cloning a snapshot, giving you reproducible baselines. Clones are independent and writable, so changes in the clone don’t affect the source, and you can delete a clone to reclaim space when it’s no longer needed. You can have many clones from a single source.

The other options don’t fit because FlexClone is not a read-only clone, not a backup copy, and not a remote replica. It’s a writable, space-efficient, point-in-time clone.