Is compression always enabled automatically on ONTAP?

• A. Compression is configurable per volume; when enabled it reduces stored data but may impact CPU usage.
• B. Compression is always on by default.
• C. Compression only applies to backups.
• D. Compression eliminates deduplication.

Answer: (A)

Compression in ONTAP is not automatic for all data; you configure it per volume. When you enable compression, data is stored more efficiently, saving space, but it adds CPU overhead for compressing and decompressing data, so you choose where this trade-off makes sense. This aligns with the idea that compression is configurable per volume, reduces stored data when enabled, and may impact CPU usage. It’s not always on by default, it isn’t limited to backups, and it doesn’t eliminate deduplication—dedup and compression can work together.