What describes the characteristics of external backup solutions supported by the Hitachi Unified Storage System (HUS) File Module option?

Question

Options

• AThe HUS File Module uses file system snapshot technology.
• BThe HUS File Module only backs up to direct attached tape drives.
• CThe HUS File Module relies on the User Datagram Protocol (UDP) with CRC enabled.
• DThe HUS File Module uses Network Data Management Protocol (NDMP).

• A
  3% (1)
• C
  3% (1)
• D
  94% (31)

Explanation

NDMP (Network Data Management Protocol) is the industry-standard protocol designed specifically for network-based backup operations in NAS environments, and the HUS File Module leverages it to enable backup communication between the storage system and backup servers/media without routing data through the application server - making D correct.

Option A is wrong because snapshot technology is an internal data protection feature (a point-in-time copy), not an external backup solution - the question specifically asks about external backup.

Option B is wrong because the HUS File Module supports network-based backup via NDMP, not exclusively direct-attached tape; restricting to only local tape would negate the value of a networked file module entirely.

Option C is wrong because NDMP operates over TCP, not UDP - reliable data transfer for backup operations requires TCP's guaranteed delivery, not UDP's connectionless model.

Memory tip: Think "NAS needs NDMP" - whenever you see a NAS or file-serving storage system (like the HUS File Module) paired with the word "external backup," NDMP is almost always the answer, as it was purpose-built for exactly this use case.

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