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Last Updated: Oct 09, 2026
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Hitachi HAT-420 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Maintenance and Troubleshooting | 20% | - Firmware and software updates - Backup and recovery operations - Error diagnosis and resolution - Component replacement procedures |
| Topic 2: Data Protection and Advanced Features | 10% | - Snapshot and cloning functions - Replication and migration technologies - Performance optimization |
| Topic 3: Modular Storage Architecture | 20% | - System software overview - Hardware components and specifications - Drive enclosures and connectivity - Controller and cache architecture |
| Topic 4: Installation and Setup | 25% | - Site preparation and requirements - Storage Navigator Modular 2 usage - Initial configuration and setup - Physical installation and cabling |
| Topic 5: Configuration and Management | 25% | - RAID groups and logical volumes - Host connectivity and storage provisioning - System monitoring and reporting - User management and security |
Hitachi Data Systems Certified Professional - Modular storage installation Sample Questions:
Which performance feature is provided by the Hitachi Unified Storage systems controller architecture?
- A. automatic controller load balancing
- B. automatic cache segment resizing
- C. automatic front-end port hardware load balancing
- D. automatic front-end storage group load balancing
Correct Answer: A 🗳️
A manufacturing company wants to centrally manage all their multipath software using Hitachi Global Link
Manager (HGLM). Which two types of multipath software are supported? (Choose two.)
- A. SDD
- B. PowerPath
- C. VxDMP
- D. HDLM
Correct Answer: C,D 🗳️
You have just allocated four 3TB LUNs from a Hitachi Unified Storage System to a set of ESX 4.x servers.
The VMware administrator can see volumes that are assigned to the servers from an older storage array,
but not the volumes you have just allocated. What is the most likely cause?
- A. This a newer storage array with an older version of ESX so the HBA drivers need to be updated.
- B. The rescan function in VMware is not working, so both servers need to be rebooted.
- C. The FC switch ports need to be disabled/enabled to force the HBAs to re-login to the fabric.
- D. ESX 4.x servers cannot recognize volumes that are 2TB or larger.
Correct Answer: D 🗳️
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 Concepts and Planning Guide.
- B. Check the HDLM release notes.
- C. Access the HiFire Web site to verify the configuration.
- D. Call the HDS Customer Support Center.
Correct Answer: B,C 🗳️
You want to configure SNMP on a Hitachi Unified Storage system. The license key is already installed
and enabled. What are two key steps when configuring SNMP? (Choose two.)
- A. Install an SNMP Manager on the HUS.
- B. Create the SNMP environment file in the HUS.
- C. Register the SNMP configuration files in the HUS.
- D. Import the MIB file into the HUS.
Correct Answer: B,C 🗳️
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