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: Oct 08, 2026
- Q & A: 110 Questions and Answers
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Hitachi HAT-420 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Management and Administration | - System management
|
| Topic 2: Hardware Installation | - Physical deployment
|
| Topic 3: Installation Planning | - Site preparation
|
| Topic 4: Modular Storage Architecture | - Storage system components
|
| Topic 5: Connectivity and Host Integration | - Front-end connectivity
|
| Topic 6: Data Protection and Performance | - Availability and optimization
|
| Topic 7: Storage Configuration | - Logical configuration
|
| Topic 8: Troubleshooting | - Problem diagnosis
|
Hitachi Data Systems Certified Professional - Modular storage installation Sample Questions:
Which method is used by Hitachi Unified Storage (HUS) systems to protect against loss of data in cache
should a total power failure occur?
- A. The battery power de-stages data in cache to on-board Flash memory.
- B. The HUS mirrors all cache writes to on-board SSD drives.
- C. The battery power de-stages data in cache to an on-board SSD drive.
- D. The HUS uses non-volatile cache so data is always protected.
Correct Answer: A 🗳️
A customer has multiple cache partitions defined on a Hitachi Unified Storage system. They would like to
change one of the partitions characteristics. Which three settings can be modified? (Choose three.)
- A. owning controller
- B. cache size
- C. segment size
- D. stripe size
- E. partition number
Correct Answer: A,B,C 🗳️
A Hitachi Unified Storage (HUS) system has been configured to use additional Host Groups. Which host
interface type on the HUS can be used to access these Host Groups?
- A. IP
- B. NAS
- C. iSCSI
- D. FC
Correct Answer: D 🗳️
On a Hitachi Unified Storage system, which statement regarding Master Cache Partitions is correct?
- A. They always exist if there is 2GB or more of cache memory installed per controller.
- B. They do not exist until the Cache Partition ManagerLicensekey is installed.
- C. There is always a Master Cache Partition 0 in controller 0 and in controller 1.
- D. They always exist whether or not the Cache Partition ManagerLicensekey is installed.
Correct Answer: D 🗳️
Which two features make use of the Memory Management Layer in a Hitachi Unified Storage system?
(Choose two.)
- A. Quick Format
- B. Cache Residency
- C. Normal Format
- D. ShadowImage
Correct Answer: A,D 🗳️
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