Bandwidth requirement - estimated on basis of expected traffic RAM requirements - estimated on basis of no. of processes that you plan to run Disk space- Depends on type of service you ar planning to offer Dedicated IP addresses- Depends on type of service, you might require seperate IP for email server Operating System- Windows or Linux operating systems(Linx based VPS is generally cheaper) Control Panels(cpanel,plesk etc)- most useful to those wishing to host a web-server service Supportcheck the average ticket resolution time rather 24X7 support Reliability- Ask for system up time records
What is VPS?
Bandwidth requirement - estimated on basis of expected traffic