Hitachi Data Systems Certified Professional - Modular storage installation : HAT-420 Exam Questions

  • Exam Code: HAT-420
  • Exam Name: Hitachi Data Systems Certified Professional - Modular storage installation
  • Updated: Sep 07, 2025
  • Q&As: 110 Questions and Answers

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

1. A customer wants to migrate their data from an existing AMS2500 to a newly acquired Hitachi Unified
Storage (HUS) system using TrueCopy Extended Distance (TCE) software. Which set of components is
required on the HUS to configure TCE?

A) an HDP license and 50% more cache capacity
B) an HDP License and a TCE license
C) Journal Volumes and a TCE license
D) a Cache Memory adapter and a TCE license


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

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


3. Which two resources should be reviewed before installation and maintenance operations? (Choose two.)

A) HDS Engineering Change Notices (ECNs)
B) HDS Storflash Bulletins
C) HDS Maintenance Manuals
D) HDS Technical White Papers


4. Which two statements relating to the online firmware upgrade are true for Hitachi Unified Storage systems?
(Choose two.)

A) Only the HUS model 150 storage system supports online firmware upgrades.
B) Online firmware upgrades should not be scheduled for periods of high CPU workload.
C) Online firmware upgrades can only be done using Storage Navigator Modular 2.
D) All hosts must have multiple paths to the HUS when performing online firmware upgrades.


5. You must install Hitachi Dynamic Link Manager (HDLM) on a customer's server but you are not sure if the
server HBA types and versions are supported. Which two actions would help you find this information?
(Choose two.)

A) Check the HDLM release notes.
B) Access the HiFire Web site to verify the configuration.
C) Call the HDS Customer Support Center.
D) Check the HDLM Concepts and Planning Guide.


Solutions:

Question # 1
Answer: B
Question # 2
Answer: C,D
Question # 3
Answer: A,C
Question # 4
Answer: B,C
Question # 5
Answer: A,B

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