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Exam Code: HAT-420
Exam Name: Hitachi Data Systems Certified Professional - Modular storage installation
Updated: Jul 31, 2026
Q & A: 110 Questions and Answers
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| Section | Objectives |
|---|---|
| Storage Networking | - SAN connectivity
|
| Maintenance and Troubleshooting | - Monitoring and diagnostics
|
| Installation and Configuration | - Initial system setup
|
| Hitachi Modular Storage Architecture | - System models and hardware overview
|
1. What must be installed on an AIX server prior to Hitachi Dynamic Link Manager Installation?
A) MPXIO
B) HACMP
C) Hitachi ODM
D) HTnM agent
2. Why will a server in an environment using persistent binding maintain a constant view of its target IDs
when rebooted?
A) Because the LU Management Service will manage the target IDs.
B) Because the driver software remaps the SCSI target ID to the new WWNNs automatically.
C) Because persistent binding will connect to the LU Manager and provide the target IDs.
D) Because persistent binding retains the target ID information.
3. When performing an initial installation of a Hitachi Unified Storage system, which management tool must
be used to set the date and time?
A) Storage Navigator Modular 2
B) Web Tool
C) RAID Manager/CCI
D) Hitachi Command Suite
4. 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 an on-board SSD drive.
B) The HUS mirrors all cache writes to on-board SSD drives.
C) The battery power de-stages data in cache to on-board Flash memory.
D) The HUS uses non-volatile cache so data is always protected.
5. What allows firmware to be updated non-disruptively on the Hitachi Unified Storage systems?
A) While one controller is rebooting, the other handles all host operations.
B) Firmware updates only affect the first five drives and no controller reboot is required.
C) Host connectivity to both controllers established using multi-pathing software.
D) Firmware updates are performed in less than the host I/O timeout value.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: A |
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