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HP0-J73 · Question #246
HP0-J73 Question #246: Real Exam Question with Answer & Explanation
The correct answer is D: IP-based Remote Copy with Asynchronous Replication. An ISP WAN link between offices requires IP-based replication, and asynchronous mode is required because WAN latency makes synchronous replication impractical for application performance.
Installation, Configuration, and Management Fundamentals of HP Storage
Question
A customer plans to migrate data from a third-party storage system to an HP 3PAR StoreServ 7000. They have an ISP connection between two offices. The new storage system must replicate data between the offices. What should the customer implement?
Options
- AIP-based Remote Copy with Synchronous Replication
- BFC-based Remote Copy with Synchronous Replication
- CFC-based Remote Copy with Asynchronous Replication
- DIP-based Remote Copy with Asynchronous Replication
Explanation
An ISP WAN link between offices requires IP-based replication, and asynchronous mode is required because WAN latency makes synchronous replication impractical for application performance.
Common mistakes.
- A. Synchronous replication requires near-zero round-trip latency to avoid host I/O stalls; an ISP WAN link introduces too much variable latency for synchronous mode to be viable.
- B. FC-based Remote Copy requires a dedicated Fibre Channel inter-site link or FC-over-WAN infrastructure, which the customer does not have - only an IP-based ISP connection exists.
- C. FC-based replication of any mode requires a Fibre Channel transport between sites, which is absent here since the customer only has a standard ISP IP connection.
Concept tested. HP 3PAR Remote Copy IP asynchronous WAN replication
Reference. https://support.hpe.com/hpesc/public/home
Topics
#Remote Copy#IP-based replication#asynchronous replication#WAN connectivity
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