HP0-J67 · Question #71
You are planning an HP StoreVirtual multi-site storage configuration with two HP StoreVirtual 4530 nodes at each site. The Network iSCSI switches have jumbo frames enabled and each site is in a…
The correct answer is A. VLAN design B. latency. When implementing an HP StoreVirtual multi-site configuration with network constraints like 1Gb/s bandwidth and 5ms latency, careful consideration of network design and latency management is crucial to prevent disk I/O impact.
Question
You are planning an HP StoreVirtual multi-site storage configuration with two HP StoreVirtual 4530 nodes at each site. The Network iSCSI switches have jumbo frames enabled and each site is in a separate VLAN. Your customer reports that their network which connects the two sites has a bandwidth of 1Gb/s and a network latency of approximately 5ms. You need to implement a solution that avoids impacting the disk I/O. What should you consider to achieve this goal? (Select two.)
Options
- AVLAN design
- Blatency
- Cnumber of storage nodes
- Djumbo frames
- Eapplication design
How the community answered
(48 responses)- A65% (31)
- C10% (5)
- D21% (10)
- E4% (2)
Why each option
When implementing an HP StoreVirtual multi-site configuration with network constraints like 1Gb/s bandwidth and 5ms latency, careful consideration of network design and latency management is crucial to prevent disk I/O impact.
A robust VLAN design is critical to segregate different traffic types, such as local iSCSI traffic from inter-site replication traffic, ensuring that replication activities do not contend with and degrade local storage I/O performance.
Latency directly impacts synchronous replication and overall I/O performance; understanding and managing the 5ms latency between sites is essential to select appropriate replication modes (e.g., asynchronous) and ensure local disk I/O operations are not stalled waiting for remote acknowledgements.
The number of storage nodes is a given design parameter for capacity and performance, not a consideration for mitigating disk I/O impact due to network constraints.
Jumbo frames are already enabled and contribute to network efficiency, but they do not fundamentally address the limitations of 1Gb/s bandwidth and 5ms latency in avoiding disk I/O impact.
While application design is important, the question specifically focuses on what to consider from a network perspective to avoid impacting disk I/O, making VLAN design and latency management more direct answers.
Concept tested: StoreVirtual multi-site network design and latency management
Source: https://www.hpe.com/psnow/doc/a00000742enw
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