In the not so distant past, VMware held a long and commanding lead in the server virtualization space, offering core features that were simply unmatched by the competition. In the past few years, however, competition in virtualization has been fierce, the competitors have drawn near, and VMware has been left with fewer ways to distinguish itself.
Stories by Paul Venezia
The benefits of server virtualisation are so significant at this point that implementing it is a no-brainer. First and foremost, server virtualisation makes much better use of computing resources than physical servers do, since you can run many different virtual servers on a single physical host. In fact, you may be surprised at just how many general-purpose server instances a single modern server can handle simultaneously.
It wasn't so long ago that calling a telco to order frame-relay circuits was the only feasible way to securely connect remote offices to headquarters. The typical frame-relay network consists of T1 and fractional T1 circuits connected via a frame switch located in a telco CO (central office), with all these circuits aggregated on a central circuit in the corporate datacenter. The recurring fees are costly, leaving IT directors little choice but to severely limit the bandwidth to remote sites. If 128Kbps circuits can do the job, albeit slowly, then up they go.