We can argue so called "mission critical" application are always based on UNIX platform.
e.g. NASDAQ Transaction Centre/ TD Bank infrastructure/ Imperil Oil Inc./ BOEING : their backbone infrastructure are heavily based on NT or W2K system.
WINTER OLYMPIC GAME 2002, There are 400s NT/SQL server(Kernal Game system) + 150s Sun Box , they built the final results together.
Finally, My previous company using 20s Servers(SQL+Exchange)+400s desktops+100s laptops infrasctructure based on pure NT/2000 platform. I take care of them, I didn't find an extra expense on security part, Just very standard configuration:(We using CheckPoint Firewall (NT verstion)+Norton Enterprise AntiVirus Server+Norton Enterprise Antivirus Client.).
CheckPoint is an industry standard.
Norton AntiVirus Server cost us 500$, Clients included unlimited licenses.
e.g. NASDAQ Transaction Centre/ TD Bank infrastructure/ Imperil Oil Inc./ BOEING : their backbone infrastructure are heavily based on NT or W2K system.
WINTER OLYMPIC GAME 2002, There are 400s NT/SQL server(Kernal Game system) + 150s Sun Box , they built the final results together.
Finally, My previous company using 20s Servers(SQL+Exchange)+400s desktops+100s laptops infrasctructure based on pure NT/2000 platform. I take care of them, I didn't find an extra expense on security part, Just very standard configuration:(We using CheckPoint Firewall (NT verstion)+Norton Enterprise AntiVirus Server+Norton Enterprise Antivirus Client.).
CheckPoint is an industry standard.
Norton AntiVirus Server cost us 500$, Clients included unlimited licenses.