HP0-J67 · Question #46
A customer has an environment spanning two data centers on a campus environment . The primary storage is an HP 3PAR StoreServ 10400 system. Data replicated between sites with an RPO of zero. The…
The correct answer is D. A dedicated subnet must be added to interconnect the 3PAR arrays. When adding a third data center for disaster recovery with active data replication to HP 3PAR arrays, a dedicated subnet is required to properly interconnect these arrays for replication traffic. This ensures network isolation and proper routing for the new replication target.
Question
A customer has an environment spanning two data centers on a campus environment . The primary storage is an HP 3PAR StoreServ 10400 system. Data replicated between sites with an RPO of zero. The customer is questioning whether they have adequate protection. You suggest creating a DR site and actively replicate the data to it. What are the implications of adding the third data center to the data network?
Options
- A10 GbE links are needed to interconnect the HP StoreServ 3PAR arrays.
- BThe data network must support OpenStack.
- CThe data network must support Converged Enhanced Ethernet
- DA dedicated subnet must be added to interconnect the 3PAR arrays
How the community answered
(28 responses)- A11% (3)
- B4% (1)
- C4% (1)
- D82% (23)
Why each option
When adding a third data center for disaster recovery with active data replication to HP 3PAR arrays, a dedicated subnet is required to properly interconnect these arrays for replication traffic. This ensures network isolation and proper routing for the new replication target.
While 10 GbE links are common for high-performance replication, it's a speed requirement, not a universal network architecture implication of adding a third data center, especially since the question does not specify distance or bandwidth needs.
OpenStack is a cloud operating system for managing compute, storage, and networking resources, and supporting it is not a fundamental network implication of simply adding a third data center for 3PAR replication.
Converged Enhanced Ethernet is a specific technology for lossless Ethernet, often used with FCoE, and not a general network implication for simply adding a third data center for 3PAR replication.
For HP 3PAR StoreServ arrays, especially when setting up replication across multiple sites, it is a standard best practice and often a requirement to configure dedicated subnets for the replication interfaces. This provides isolation for replication traffic, ensures proper routing, and facilitates network management and security for the inter-array communication without interfering with host access or other network services.
Concept tested: Multi-site storage replication networking
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