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

  • Exam Code: HAT-420
  • Exam Name: Hitachi Data Systems Certified Professional - Modular storage installation
  • Updated: Sep 05, 2026
  • Q & A: 110 Questions and Answers

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

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Hitachi HAT-420 Exam Syllabus Topics:

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

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

Question #1

A user with Storage Administration View and Management rights has logged in to a Hitachi Unified
Storage system. What happens if a second user with Storage Administration View and Management
rights tries to log in to the same system?

  • A. The log in is allowed and the second user will get the storage administration rights. The original user's
    rights are reduced to view-only.
  • B. The log in is allowed but the first user will keep the storage administration rights. The second user will
    be view-only.
  • C. The log in is allowed and both users will have storage administration rights.
  • D. The log in of the second user will be refused because he has storage administration rights as well.
Answer: B
Question #2

A customer has a Hitachi Unified Storage (HUS) system model 110 configured with iSCSI I/O interface
boards. They now want to connect it to a FC-SAN and have purchased the FC-Option upgrade to do so.
Which two tasks must be performed on the HUS system? (Choose two.)

  • A. Set the HUS FC port topology as Point-to-Point.
  • B. Install and enable the FC Expansion Board.
  • C. Set the HUS FC port topology as Fabric.
  • D. Install and enable the FC-Option on the HUS.
Answer: A,D
Question #3

A customer will be implementing a Hitachi Unified Storage File Module two-node NAS cluster with one
SMU. How many power connections are necessary?

  • A. 3
  • B. 4
  • C. 6
  • D. 5
Answer: D
Question #4

Which two statements relating to LU configuration and management on the Hitachi Unified Storage
systems are correct? (Choose two.)

  • A. It is possible to delete all RAID groups including all LUs on the system with one command.
  • B. A RAID group cannot be deleted before all its LUs have been deleted.
  • C. A LU can be physically extended if there is space left in the RAID group.
  • D. It is possible to format a LU quicker by attaching it to both controllers.
Answer: A,C
Question #5

On a Hitachi Unified Storage system, which statement regarding Master Cache Partitions is correct?

  • A. They always exist whether or not the Cache Partition ManagerLicensekey is installed.
  • B. They always exist if there is 2GB or more of cache memory installed per controller.
  • C. They do not exist until the Cache Partition ManagerLicensekey is installed.
  • D. There is always a Master Cache Partition 0 in controller 0 and in controller 1.
Answer: A

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