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Updated: Jul 26, 2026
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Hitachi HAT-420 Exam Overview:
| Certification Vendor: | Hitachi Vantara (Hitachi Data Systems) |
| Exam Name: | Hitachi Data Systems Certified Professional - Modular storage installation |
| Exam Number: | HAT-420 |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 105 - 110 |
| Exam Price: | $150 - $200 USD |
| Passing Score: | 70% - 75% |
| Related Certifications: | Hitachi Data Systems Certified Specialist Hitachi Storage Administration |
| Exam Format: | Multiple Choice, Multiple Select |
| Recommended Training: | Hitachi Modular Storage Installation Training |
| Exam Registration: | Hitachi Vantara Certification Portal Pearson VUE |
| Sample Questions: | Hitachi HAT-420 Sample Questions |
| Exam Way: | Proctored online or onsite at authorized testing centers |
| Pre Condition: | Recommended: Hitachi storage fundamentals training or equivalent hands-on experience |
| Official Syllabus URL: | https://www.hitachivantara.com/en-us/services-and-training/certification.html |
Hitachi HAT-420 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Data Protection and Advanced Features | 10% | - Snapshot and cloning functions - Replication and migration technologies - Performance optimization |
| Configuration and Management | 25% | - RAID groups and logical volumes - Host connectivity and storage provisioning - System monitoring and reporting - User management and security |
| Installation and Setup | 25% | - Site preparation and requirements - Storage Navigator Modular 2 usage - Physical installation and cabling - Initial configuration and setup |
| Maintenance and Troubleshooting | 20% | - Firmware and software updates - Backup and recovery operations - Error diagnosis and resolution - Component replacement procedures |
| Modular Storage Architecture | 20% | - System software overview - Hardware components and specifications - Controller and cache architecture - Drive enclosures and connectivity |
Hitachi Data Systems Certified Professional - Modular storage installation Sample Questions:
1. 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) Storage Navigator Modular 2 User's Guide
C) Microsoft Web site
D) HDS Hitachi Unified Storage maintenance manual
2. A customer has installed a Hitachi Unified Storage (HUS) system with only port 0A connected to a Linux
server. There is a video streaming application running on the server. You have to perform a firmware
update using SNM2. What will happen when the update is started?
A) The Linux application will continue to function non-disruptively.
B) The Linux server will time-out because there is no alternate path.
C) The firmware update process will abort if the HUS does not have at least 5 seconds of no I/O activity on
port 0A within 5 minutes.
D) The firmware update will fail because the HUS active/active controller feature checks for alternate
pathing.
3. An administrator wants to install Hitachi Dynamic Link Manager (HDLM) on a Solaris server. Which two
are required before performing the installation? (Choose two.)
A) The server must be in a dual path configuration.
B) A valid HDLM license must be obtained.
C) The processes of all applications accessing the devices to be managed by HDLM must be terminated.
D) The server must have IPv6 disabled.
4. Yesterday you allocated five new LUNs for a Solaris 9 host. Today the Solaris administrator is concerned
about corrupt data because the host system log has several entries referencing the new LUNs with the
following message: "Corrupt label; wrong magic number". What do you tell the Solaris administrator?
A) That they need to configure Device Mapper for the newly allocated LUNs.
B) That the Master Boot Record (MBR) on one of the disks has become corrupt and that rebooting the
host should fix the issue.
C) That the message is normal for new LUN allocations and that they just need to label the new partitions.
D) That they should shut down the server right away and that you will allocate five new LUNs.
5. What is a key characteristic of the Modular Volume Migration feature on a Hitachi Unified Storage (HUS)
system?
A) It migrates volumes within a HUS system.
B) It migrates volumes within the same RAID group.
C) It uses the Copy-on-Write Snapshot engine.
D) It migrates volumes between HUS systems.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: B,C | Question # 4 Answer: C | Question # 5 Answer: A |
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