UPDATE: PBXware is now on the VMware Solution Exchange as VMware PBX

While the rise of VMware seems unstoppable, Bicom Systems generally does not support virtual machines or VMware. The reasons are simple.

First, the clock source needs to be accurate. Because this service relies so heavily on time, any time-related problem will result in choppy audio, clicks, etc. The time must be accurate. When you open up facebook.com, for example, you won’t care if it is 100ms or 600ms at times. What you care about is getting SOMETHING. But when it comes to voice, this is not the case.

A MySQL/Orace Support forum user stated it best: “if you want a database for production, do not consider virtualization AT ALL. It is impossible to guarantee that when you write to the ‘disk’, you have actually written anything.” This has been tested and proven by professionals.

A second issue is not only the limit on the number of calls, but the reliability of that limit. Because of the real-time requirements of voice and video in PBXware, VMware simply cannot guarantee consistent performance. The exception is a fixed pre-allocated in real bounds of hardware, but that would usually mean no more than 2-3 VMs per machine, at most.

In short, virtual machines are a big no, but virtual servers such as SERVERware are made to the purpose of VoIP. If you must use a virtual machine, we recommend no more than 200 extensions more machine.

VMware Enterprise ESG is a robust and reliable platform for our products:
– Customer running PBXware Multi-Tenant CD install for about 3 years, 60,000 Calls / mo
– Customer running SERVERware with PBXware Multi-Tenant, test mode for 2 years, Calls Volume 20,000 in bulk no issues
– Customer running TELCOware with 2 PBXware for 3 years.

For more information, visit the Bicom Systems Wiki.

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This entry was posted in PBX System, Support, Virtual PBX, VMware, VoIP and tagged , , , , by Stephen Wingfield. Bookmark the permalink.

About Stephen Wingfield

My name's Stephen and for more years than can count I have been struggling to Liberate the World from Traditional Phone Systems and Traditional Phone System Vendors. That means working closely with partners around the world in English and French with the purpose of seeing how best we can approach local markets. Making sure that marketing and sales support are in place. Above all though giving tips and preparing quotes and proposals to make sure that customers get a 'best-fit solution' and often for the cost of 'off-the-shelf'. A lot of my purpose in contributing to this blog is to provide from these experiences and what made the difference that made the difference. Whether you are already working with Bicom Systems or not yet please feel free to add your own comments or ask your own questions. There should be much to learn for us all.

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