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

HAT-420 real exams

Exam Code: HAT-420

Exam Name: Hitachi Data Systems Certified Professional - Modular storage installation

Updated: Jul 23, 2026

Q & A: 110 Questions and Answers

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Hitachi HAT-420 Exam Syllabus Topics:

SectionObjectives
Topic 1: Installation and Configuration- Initial system setup
  • 1. Pre-installation requirements
    • 2. Physical installation procedures
      - System configuration
      • 1. Storage pool configuration
        • 2. LUN provisioning
          Topic 2: Storage Networking- Host integration
          • 1. Multipathing configuration
            • 2. Host attachment procedures
              - SAN connectivity
              • 1. Zoning and masking
                • 2. Fibre Channel concepts
                  Topic 3: Hitachi Modular Storage Architecture- System models and hardware overview
                  • 1. Hardware connectivity options
                    • 2. Modular storage product families
                      - Storage system components overview
                      • 1. Disk and RAID configurations
                        • 2. Controller and cache architecture
                          Topic 4: Maintenance and Troubleshooting- Problem resolution
                          • 1. Common installation issues
                            • 2. Hardware replacement procedures
                              - Monitoring and diagnostics
                              • 1. Event and log analysis
                                • 2. Performance monitoring tools

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

                                  1. You have been asked to allocate storage from a Hitachi Unified Storage system to a cluster of AIX hosts.
                                  The application owner wants you to make sure that the queue depth is set to 16 for all the LUNs. Where
                                  do you define the queue depth?

                                  A) on each LUN
                                  B) on the WWNN Target Ports
                                  C) on the server HBAs
                                  D) on the WWPN Target Ports


                                  2. 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) Least blocks
                                  D) Extended Round Robin


                                  3. A Hitachi Unified Storage (HUS) system has been configured to use additional Host Groups. Which host
                                  interface type on the HUS can be used to access these Host Groups?

                                  A) iSCSI
                                  B) IP
                                  C) FC
                                  D) NAS


                                  4. After opening a case with the Hitachi Data Systems technical support center, you have been asked to
                                  collect error information. How do you send the collected data to the technical support center?

                                  A) Upload to https://www.hds.com.
                                  B) Upload to https://tuf.hds.com.
                                  C) Upload to ftp://ftp.hds.com.
                                  D) Attach it to an email to [email protected].


                                  5. When implementing host access security for a LUN in a Hitachi Unified Storage system, to what is the
                                  host WWN applied?

                                  A) Storage Group
                                  B) Domain Group
                                  C) Link Group
                                  D) Host Group


                                  Solutions:

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

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