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HP0-J67 · Question #87

Your customer has made a strategic decision to implement a DR solution that will incorporate an active/ active bi-directional replication configuration. The two sites in question will have live…

The correct answer is B. WAN instability will cause fabric instability. E. The fabric will be extended across the two sites. The customer plans an active/active bi-directional DR solution using FCIP gateways over a 55 km, 1G Ethernet link with 50% utilization for a Boot from SAN environment. This setup asks about potential effects.

Analyzing Customer Requirements for Multi-site Storage Solutions

Question

Your customer has made a strategic decision to implement a DR solution that will incorporate an active/ active bi-directional replication configuration. The two sites in question will have live applications running at both locations, and both sites will have a fluid server estate with new systems coming online on a regular basis. Additionally, there is an aggressive server replacement schedule keeping instep with the HP server generation roadmap. All of the customer servers will utilize Boot from SAN. The sites are 55 km apart with a single 1G Ethernet link that is at 50% utilization. There is no SLA. The customer has already purchased one pair of MPX200 FCIP gateways per site. What is a potential effect of this configuration? (Select two.)

Options

  • AThe link speed will need to be upgraded to 10Gb
  • BWAN instability will cause fabric instability.
  • CMultiple 1Gb links will form a single 10Gb link.
  • DLSANs will maintain fabric stability.
  • EThe fabric will be extended across the two sites.

How the community answered

(20 responses)
  • A
    10% (2)
  • B
    55% (11)
  • C
    30% (6)
  • D
    5% (1)

Why each option

The customer plans an active/active bi-directional DR solution using FCIP gateways over a 55 km, 1G Ethernet link with 50% utilization for a Boot from SAN environment. This setup asks about potential effects.

AThe link speed will need to be upgraded to 10Gb

While a 1G link might eventually become a bottleneck, the question asks for a potential effect of the configuration, not a mandatory upgrade requirement, and a single 10Gb upgrade is not the only potential solution.

BWAN instability will cause fabric instability.Correct

Fibre Channel over IP (FCIP) extends a Fibre Channel fabric over an IP WAN, meaning any instability, congestion, or latency on the 1G Ethernet link will directly translate to instability and performance issues within the extended Fibre Channel fabric, especially for latency-sensitive applications like Boot from SAN.

CMultiple 1Gb links will form a single 10Gb link.

While multiple 1Gb links can be aggregated to increase bandwidth, this is a network design choice to address bandwidth, not a direct effect of extending a Fibre Channel fabric via FCIP, nor does it inherently form a single 10Gb link.

DLSANs will maintain fabric stability.

LSANs (Logical SANs) are used for fabric partitioning and access control within a Fibre Channel fabric for security and management, but they do not inherently provide or maintain fabric stability across a WAN extension.

EThe fabric will be extended across the two sites.Correct

FCIP gateways, such as the MPX200, are specifically designed to encapsulate Fibre Channel frames within IP packets and transmit them over an IP network. This process effectively extends a single Fibre Channel fabric across geographical distances, making devices at both sites appear to be part of the same fabric.

Concept tested: Fibre Channel over IP (FCIP) implications, WAN extension

Source: https://www.broadcom.com/products/fibre-channel-networking/fabric-vision/fabric-os/fcip

Topics

#active/active DR#bi-directional replication#SAN fabric extension#WAN instability

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