Vdi Scalability Tests (10,000 Users) - Dell Networking S6000 Test Report

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
Copyright  2013 Miercom
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