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

  • Exam Code: HAT-420
  • Exam Name: Hitachi Data Systems Certified Professional - Modular storage installation
  • Updated: Jul 24, 2026
  • Q & A: 110 Questions and Answers

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Hitachi HAT-420 Exam Syllabus Topics:

SectionObjectives
Topic 1: Installation Planning- Site preparation
  • 1. Power and environmental requirements
  • 2. Rack and cabling preparation
  • 3. Hardware verification
Topic 2: Connectivity and Host Integration- Front-end connectivity
  • 1. iSCSI and Ethernet connectivity
  • 2. Host mapping and zoning
  • 3. Fibre Channel configuration
Topic 3: Modular Storage Architecture- Storage system components
  • 1. Cache and memory concepts
  • 2. Controller architecture
  • 3. Disk enclosures and connectivity
Topic 4: Storage Configuration- Logical configuration
  • 1. RAID configuration
  • 2. Storage pool creation
  • 3. Logical unit provisioning
Topic 5: Troubleshooting- Problem diagnosis
  • 1. System log analysis
  • 2. Hardware fault identification
  • 3. Connectivity troubleshooting
Topic 6: Hardware Installation- Physical deployment
  • 1. Expansion unit installation
  • 2. Drive installation
  • 3. Controller installation
Topic 7: Management and Administration- System management
  • 1. Monitoring and maintenance
  • 2. Firmware and licensing
  • 3. Management utilities
Topic 8: Data Protection and Performance- Availability and optimization
  • 1. Performance optimization
  • 2. Storage best practices
  • 3. Redundancy and failover

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

1. What are two effects of persistent binding? (Choose two.)

A) Persistent binding can speed up the server boot process.
B) Persistent binding guarantees Command Device security.
C) Persistent binding guarantees that target assignments are preserved between reboots.
D) Persistent binding can speed up path failover.


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

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


3. A customer has identified a performance bottleneck with Online Transaction Processing (OLTP)
production host LUNs. The performance improvement plan includes a change to the Hitachi Dynamic Link
Manager load balancing algorithm which is currently set to Round Robin. Which setting would you
recommend?

A) Least I/Os
B) Extended Least blocks
C) Extended Round Robin
D) Least blocks


4. A customer would like to deploy a clustered File Module option on their Hitachi Unified Storage system.
What is a valid connection for the cluster interconnect?

A) 16Gb Fibre Channel
B) 8Gb Fibre Channel
C) 1Gb Ethernet
D) 10Gb Ethernet


5. Why will a server in an environment using persistent binding maintain a constant view of its target IDs
when rebooted?

A) Because the LU Management Service will manage the target IDs.
B) Because the driver software remaps the SCSI target ID to the new WWNNs automatically.
C) Because persistent binding retains the target ID information.
D) Because persistent binding will connect to the LU Manager and provide the target IDs.


Solutions:

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

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