Which Three Statements Are True Regarding the Hitachi External Storage

Which three statements are true regarding the Hitachi external storage architecture? (Choose three.)

A) Enabling Cache Mode increases exposure to problems with high Cache Write Pending.
B) Enabling Cache Mode allows destaging asynchronously from host I/O.
C) Enabling Cache Mode always improves performance.
D) A System Option mode can force in sequence destaging even when destaging asynchronously.
E) Disabling Cache Mode for an external LDEV eliminates the use of cache.

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