Case Study: Accountants International achieves 60% increase in users per Citrix server with AppSense Performance Manager

Accountants International - Customer Case Study

Accountants International, a Randstad company with 20+ years’ experience and over 50 U.S. offices, was consolidating three data centers and upgrading from Citrix XenApp 3.0 to the more resource‑intensive XenApp 4.5 on VMware ESX. The migration caused a dramatic drop in per‑server user density (from 30–40 users on physical servers to usually fewer than 12 and never more than 18), threatening the viability of the upgrade and the consolidation project.

The IT team deployed AppSense Performance Manager to identify and limit resource‑hungry applications (notably Internet Explorer), stabilizing workload and ensuring consistent quality for all users. As a result, servers now average 25 simultaneous Citrix sessions—about a 60% increase in users per server—enabling the successful Citrix/VMware migration, full data center consolidation, and a significant reduction in physical servers.

Accountants International

Donald Wong

IT Operations and Development Manager