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6.2 VDI Scalability Tests (10,000 Users)

The objective of the second part of testing was to verify the scalability to support up to 10,000

users in a VDI environment.

The traffic scenarios generated by Login VSI in the first part of testing (200 concurrent VDI users

as shown below) were captured and replayed multiple times by traffic generation test tools, the

Ixia XM12 and the BreakingPoint FireStorm. The scenarios consisted of traffic distribution data,

frame size distribution and traffic capture (payload) that were emulated by the traffic generators.

Figure 6: VDI Traffic Pattern (Peer and Mesh) through S6000 Switch, 200-User

Quality of Experience Testing

The VDI traffic distribution in the QoE testing for 200 users had a point-to-multipoint appearance. This

traffic distribution was used in modeling the traffic distribution used in subsequent scalability testing for

10,000 users.

The VMware designation of a Power User (standard) was selected. It is the third of four user

types in ascending order in the VMware Horizon View Architecture Planning Guide.

Characteristics include a usage level of compute-intensive and a virtual machine configuration of

1vCPU and 2GB RAM.

For the purpose of comparison, Knowledge Worker, mentioned earlier in the report, is below

Power User (standard). The classification above, Power User (heavy), has a compute-intensive

usage level and a virtual machine configuration of 2vCPU and 3GB RAM.

Thus, Miercom projected prior to testing that in order to accommodate a virtual desktop

environment of 10,000 Power Users (standard), the S6000 would have to maintain at least 20

Gbps of traffic.

Miercom decided to verify three times this capacity, to at least 60 Gbps. Doing so required that

seven of the 10 GbE ports on the S6000 be fully loaded with traffic.

In order to analyze the characteristics of the VDI traffic, the peer mapping function of the

WildPackets OmniPeek network analyzer was used. It was confirmed that VDI traffic from all

Horizon View clients to the vSphere hypervisors was meshed.

Dell Networking S6000 Switch

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DR130815

23August2013