Vendor: Hitachi
Exam Code: HAT-680
Exam Name: Hitachi Data Systems Qualified Professional - Storage Administration
Certification: Hitachi Certifications
Total Questions: 101 Q&A
Updated on: Jun 12, 2026
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Hitachi Dynamic Link Manager is being used with a VSP system in a multi-path environment with intense sequential I/Os. What are two Hitachi recommended load- balancing algorithms for this environment? (Choose two.)
A. Least I/O
B. Least Block
C. Extended Least I/O
D. Extended Round Robin
A VSP customer wants to optimize their multi-pathing environment and improve I/O performance. Which two Hitachi Dynamic Link Manager (HDLM) features will assist this customer? (Choose two.)
A. HDLM spreads I/O workloads across available paths to ensure that no single path becomes overworked or under-utilized.
B. The HDLM server monitors the client hosts' multi-pathing agents and redistributes I/Os so no single path becomes overworked or under-utilized.
C. HDLM provides multiple load-balancing algorithms to balance I/Os across available paths.
D. HDLM analyzes I/O profiles and determines the most appropriate buffering policy.
Using Hitachi Device Manager, and after launching the Element Manager, you want to specify a logical device (LDEV) as a Command Device on a VSP storage system. Which two conditions must the LDEV satisfy? (Choose two.)
A. The LDEV must be at least 128 MB in size.
B. The logical device must not be reserved for ShadowImage in-system replication.
C. The emulation type must be OPEN-V.
D. The logical device must not be on a RAID1 parity group.
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