[asterisk-users] Multitenant or Multiple virtual machines

[Tzafrir Cohen]

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.

> 
> - 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.

-- 
               Tzafrir Cohen       
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