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Hitachi HAT-420 Exam Syllabus Topics:

Hitachi Data Systems Certified Professional - Modular storage installation Sample Questions:

Question 1

Hitachi Dynamic Link Manager is being used with a Hitachi Unified Storage system in a multi-path
environment with intense sequential I/Os. What are two recommended load-balancing algorithms?
(Choose two.)

A. extended round-robin
B. extended least I/Os
C. least blocks
D. least I/Os

Question 2

What are two ways to restrict access to storage through a Fabric? (Choose two.)

A. Use Host Group security
B. Use zoning
C. Use SNMP
D. Useport security on the switch(es)

Question 3

Which method is used by Hitachi Unified Storage (HUS) systems to protect against loss of data in cache
should a total power failure occur?

A. The HUS uses non-volatile cache so data is always protected.
B. The HUS mirrors all cache writes to on-board SSD drives.
C. The battery power de-stages data in cache to an on-board SSD drive.
D. The battery power de-stages data in cache to on-board Flash memory.

Question 4

What are two advantages of the Memory Management Layer (MML) in Hitachi Unified Storage systems?
(Choose two.)

A. Metada for MML-supported functions is copied to cache only when needed for processing.
B. LU quick and normal format speeds are increased.
C. The DM-LU size is automatically adjusted depending upon the number of copy pairs.
D. Copy-on-Write Snapshot and TrueCopy Extended Distance no longer require a data pool for
differential data.

Question 5

A customer would like to add the File Module option to their Hitachi Unified Storage (HUS) system to
provide files services. Which three types of connectivity are required from the File Module? (Choose
three.)

A. IP to SMU
B. FC to Servers
C. FC to SMU
D. FC to HUS
E. IP to Servers

Solutions: