As 2026 continues, Prep4away keeps its HAT-420 commitments simple — verified answers in the Hitachi Data Systems Certified Professional - Modular storage installation bank, 365 days of free updates, 110 practice questions for the HAT-420 exam, and support that works through weekends and official holidays alike.
Hitachi HAT-420 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Installation and Configuration | - System configuration
|
| Hitachi Modular Storage Architecture | - System models and hardware overview
|
| Storage Networking | - Host integration
|
| Maintenance and Troubleshooting | - Problem resolution
|
HAT-420 Exam Facts, Early Starts and Safety Nets
- Installation and Configuration ()
- Maintenance and Troubleshooting ()
- Hitachi Modular Storage Architecture ()
Hitachi Data Systems Certified Professional - Modular storage installation Sample Questions:
Your Hitachi Unified Storage (HUS) customer uses the latest release of Hitachi Command Suite (HCS)
products, Device Manager and Tuning Manager. Which tab in the HCS main view is available to your
customer for viewing HUS system performance data?
- A. Monitor
- B. Performance
- C. Metrics
- D. Analytics
Correct Answer: D 🗳️
Which two Program Products reserve cache in a Hitachi Unified Storage system when they are installed,
even if disabled? (Choose two.)
- A. Cache Partioning Manager
- B. TrueCopy Extended
- C. ShadowImage
- D. TrueCopy
Correct Answer: A,B 🗳️
What is a key characteristic of the Modular Volume Migration feature on a Hitachi Unified Storage (HUS)
system?
- A. It uses the Copy-on-Write Snapshot engine.
- B. It migrates volumes within the same RAID group.
- C. It migrates volumes between HUS systems.
- D. It migrates volumes within a HUS system.
Correct Answer: D 🗳️
You have set Extended Round Robin on a server with intensive sequential I/O profile. Which two benefits
result from implementing this algorithm? (Choose two.)
- A. efficient cache usage on the storage system
- B. blocks held permanent in Read Cache
- C. no tracks preloading on the system
- D. tracks preloaded to cache
Correct Answer: A,D 🗳️
Which two operations can be performed with the Web utility on a Hitachi Unified Storage system?
(Choose two.)
- A. Take a simple trace.
- B. Perform an online microcode update.
- C. Install license keys.
- D. Perform an offline microcode update.
Correct Answer: A,D 🗳️


