HP0-J73 · Question #123
A company is planning to implement a disaster recovery site. The site must provide highest level of data availability, with minimal latency. Which type of replication should the company use?
The correct answer is D. Fibre Channel synchronous. Fibre Channel synchronous replication provides zero data loss and the lowest latency of the listed options, meeting the requirements for the highest level of data availability.
Question
A company is planning to implement a disaster recovery site. The site must provide highest level of data availability, with minimal latency. Which type of replication should the company use?
Options
- AIP-based asynchronous
- BFibre Channel asynchronous
- CIP-based synchronous
- DFibre Channel synchronous
How the community answered
(47 responses)- A9% (4)
- B19% (9)
- C6% (3)
- D66% (31)
Why each option
Fibre Channel synchronous replication provides zero data loss and the lowest latency of the listed options, meeting the requirements for the highest level of data availability.
IP-based asynchronous replication introduces a replication lag, meaning some data may be lost on failure, which does not satisfy the highest availability requirement.
Fibre Channel asynchronous replication still incurs a potential data loss window due to the asynchronous lag, despite the low-latency transport.
IP-based synchronous replication guarantees zero data loss but introduces higher and less consistent latency than Fibre Channel, making it inferior when minimal latency is also a stated requirement.
Synchronous replication confirms a write only after data has been committed to both the primary and secondary site, guaranteeing a recovery point objective (RPO) of zero and maximum data availability. Fibre Channel provides lower and more deterministic latency than IP-based networks, making FC synchronous the best choice when both minimal latency and the highest availability tier are required simultaneously.
Concept tested: Fibre Channel synchronous replication for disaster recovery
Source: https://www.snia.org/education/storage_networking_primer/replication/synchronous_vs_asynchronous
Topics
Community Discussion
No community discussion yet for this question.