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: Sep 11, 2026     Q & A: 110 Questions and Answers

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Hitachi HAT-420 Exam Syllabus Topics:

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

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

                                  Question #1

                                  How should the Hitachi Unified Storage systems dual power supplies be connected?

                                  • A. by two independent and appropriately rated power distribution units
                                  • B. by FS6 circuits breakers
                                  • C. by adjacent sockets on a single power distribution unit
                                  • D. only one should be connected, the other being standby
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A  🗳️

                                  Question #2

                                  What is the correct procedure to replace a suspected SAS interface cable connected to the last drive box
                                  (DBL) of a Hitachi Unified Storage system?

                                  • A. Using SNM2, disable the suspected SAS link, replace the cable and enable the SAS link.
                                  • B. Using the WEB tool, disable the suspected SAS link, replace the cable and enable the SAS link.
                                  • C. Replace the suspected SAS interface cable by a new one.
                                  • D. Slide out the I/O module from the DBL, replace the cable and slide the I/O module back in.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: D  🗳️

                                  Question #3

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

                                  Correct Answer: A  🗳️

                                  Question #4

                                  You plan to use Storage Navigator Modular 2 (SNM2) to perform a non-disruptive upgrade of the firmware
                                  on a Hitachi Unified Storage (HUS) system. What are two requirements for this process? (Choose two.)

                                  • A. You must have a working LAN connection between the SNM2 server and the HUS.
                                  • B. The HUS must have a Device Manager Agent installed and running.
                                  • C. All hosts must be connected to the HUS using HDLM or similar multi-pathing software.
                                  • D. There must be no hardware faults or missing components on the HUS.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A,D  🗳️

                                  Question #5

                                  Which pair of IP addresses is assigned to the Hitachi Unified Storage system maintenance LAN ports by
                                  default?

                                  • A. 192.168.0.16 and 192.168.0.17
                                  • B. 10.0.0.16 and 10.0.0.17
                                  • C. 192.168.1.16 and 192.168.1.17
                                  • D. 10.1.1.16 and 10.1.1.17
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

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