Virtualization And Scalability; Virtualization; Scalability Assumptions - Dell PowerConnect W-AirWave 7.6 Server Sizing Manual

This section includes the following topics:
"Virtualization" on page 7
l
"Scalability Assumptions" on page 7
l

Virtualization

AirWave can run in a VMware and Xen virtualized environment. To ensure scalability, dedicate the processing and
memory. You must also ensure that the disk subsystem can maintain the IOPS throughput as detailed below.
Most virtualized environments use a shared disk subsystem assuming that each application will have bursts of I/O
without a sustained high I/O throughput. AirWave requires a continuous sustained high data I/O rate.
For virtualized environment, use dedicated hardware. If you are using the specifications outlined in the
Memory, and Storage Matrix" on page 1
20%.
NOTE: Dell recommends a 20% increase buffer for virtualized environments. Ensure you allocate enough extra disk space for the OS
and swap when partitioning the virtual disk.

Scalability Assumptions

Using the specifications outlined in the
tests scalability based on the following assumptions. Deviations from these assumptions can impact overall
scalability of your AirWave server.
Table 4:
Wireless Scalability Test Values
Category
AP Interface polling period
Device-to-device link period
CDP neighbor data polling
Ratio of switches/routers to access points
Read ARP polling (hours)
Read CDP table for device discovery polling (hours)
Read bridge forwarding table polling (hours)
Interface Up/Down polling period
Dell PowerConnect W-AirWave 7.6 | Server Sizing Guide
Chapter 3

Virtualization and Scalability

section, the hardware for virtualization should exceed these specifications by
"CPU, Memory, and Storage Matrix" on page 1
10
5
30
25%
4
4
4
10
"CPU,
section, Dell continually
Virtualization and Scalability | 7