[asterisk-users] Multitenant or Multiple virtual machines

[Senad Jordanovic]

Tzafrir Cohen wrote:
> On Thu, Sep 06, 2007 at 04:38:40PM +0100, Senad Jordanovic wrote:
>> Any opinions/comments/recommendations? Before anyone recommends just
>>> buying the virtual PBX service from someone else, we _really_ want
>>> to do this in-house :)
>> 
>> I am all for using VPS (virtual private servers) instead of the
>> "classic" multitenant. 
>> 
>> Here are some reasons:
>> 
>> - a VPS provides a Linux environment to each client. This is a big
>> plus for some clients knowing they are not "boxed"
>> 
>> - Any custom development, new features can be easily applied to
>> individual clients VPSes without destroying/affecting other clients.
>> Remember, these clients must have their phone lines up in order to
>> trade :)
>> 
>> - Firmware updates, bug fixes failures etc, will not affect other
>> tenants. 
> 
> But have to be tested and applied separately to each one => more work.

Since this is custom development for client... Client is happy to pay for
it... Next..

> 
>> 
>> - I can move clients VPS to another server, another data centre
>> across the world if necessary with a couple commands.
>> 
> 
>> - One can allocate specific resources to each tenant. This is very
>> important for call centres for example.
> 
> Allocating resources means that the global pool, which is normally
> not used, can't easily be shared. This can be a pain. Deviding the
> memory of a 2GB server between 8 tenants gives you 8 258MB servers.  

True, but done corectly it is huge benefit/saving. Just the fact that
virtual machines/VPS technologies is now supported in kernels of many
operating systems tells A LOT...



Senad