The Intalio|On Demand servers are powerful enough to run hundreds of thousands of process instances concurrently. Each server has the equivalent of 1.7 GB of memory, 160 GB of storage, CPU capacity of a 32-bit 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor.
The underlying operating system is rPath Linux, following the Just enough Operating System (JeOS) principle. "This makes the appliance more efficient, smaller, more secure and higher performing than an application running under a full general purpose OS (Wikipedia, JeOS)". The Intalio|On Demand software appliance contains a bare minimal Java 1.5, Open SSH, and Intalio|Server.
The compute power comes from the Amazon Web Services Elastic Compute Cloud (EC2) which gives a fair amount of assurance that capacity and connectivity will be there when you need it.
An organisation using this as a production solution will need to consider its exposure to
- failure in the cloud removing access to fundamental business process engine and related dashboard information
- privacy and security of data passing through a commercial computing host in a jurisdiction that may not have the same legislative protections as your business domicile