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Last Updated: Oct 02, 2026
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Hitachi HAT-420 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Modular Storage Architecture | 20% | - Controller and cache architecture - Hardware components and specifications - System software overview - Drive enclosures and connectivity |
| Topic 2: Configuration and Management | 25% | - System monitoring and reporting - User management and security - Host connectivity and storage provisioning - RAID groups and logical volumes |
| Topic 3: Maintenance and Troubleshooting | 20% | - Backup and recovery operations - Component replacement procedures - Error diagnosis and resolution - Firmware and software updates |
| Topic 4: Data Protection and Advanced Features | 10% | - Performance optimization - Replication and migration technologies - Snapshot and cloning functions |
| Topic 5: Installation and Setup | 25% | - Physical installation and cabling - Initial configuration and setup - Site preparation and requirements - Storage Navigator Modular 2 usage |
Hitachi Data Systems Certified Professional - Modular storage installation Sample Questions:
Which two expansion trays are supported on Hitachi Unified Storage (HUS) model 110? (Choose two.)
- A. 4U tray to hold up to 38 SFF drives
- B. 2U tray to hold up to 12 LFF drives
- C. 4U tray to hold up to 48 LFF drives
- D. 2U tray to hold up to 24 SFF drives
Correct Answer: B,D 🗳️
A customer wants to install an Emulex HBA in a Windows 2008 server for connection to a Hitachi Unified
Storage system. Where would you determine the validity of this configuration?
- A. HiFire on HDS intranet/extranet
- B. Microsoft Web site
- C. Storage Navigator Modular 2 User's Guide
- D. HDS Hitachi Unified Storage maintenance manual
Correct Answer: A 🗳️
What are two advantages of the Memory Management Layer (MML) in Hitachi Unified Storage systems?
(Choose two.)
- A. The DM-LU size is automatically adjusted depending upon the number of copy pairs.
- B. Copy-on-Write Snapshot and TrueCopy Extended Distance no longer require a data pool for
differential data. - C. LU quick and normal format speeds are increased.
- D. Metada for MML-supported functions is copied to cache only when needed for processing.
Correct Answer: B,D 🗳️
Which two statements relating to the online firmware upgrade are true for Hitachi Unified Storage systems?
(Choose two.)
- A. All hosts must have multiple paths to the HUS when performing online firmware upgrades.
- B. Only the HUS model 150 storage system supports online firmware upgrades.
- C. Online firmware upgrades can only be done using Storage Navigator Modular 2.
- D. Online firmware upgrades should not be scheduled for periods of high CPU workload.
Correct Answer: C,D 🗳️
What are two characteristics of the Hitachi Unified Storage (HUS) controllers? (Choose two.)
- A. The FC front-end ports offer improved sequential I/O performance.
- B. Mixing FC and iSCSI front-end ports is allowed on all models.
- C. HUS models 110 and 130 are active/passive.
- D. The FC front-end ports automatically sense 1, 2, 4 and 8 Gbps.
Correct Answer: A,B 🗳️
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