September, a hard drive in an NT screeched to a halt. Management was understandably concerned. We re-wrote, ported and adjusted the various applications, creating a uniform, documented technical base. We tightened security on the UNIX servers and network, and trained the staff on issues impacting overall service robustness. Today, the web operation is entirely contained by a redundant pair of multi-processor Sun Solaris servers.
Most applications use the same web technologies deployed is similar ways.
And their new systems administrator is very happy with his situation.