Hardware
Compellent
Dell EqualLogic
Dot Hill Systems
HP (Lefthand)
Nexsan
Overland Storage
RELDATA
IceWeb

Operating Systems
VMWare - ESXi, ESX v3.5, VDI, vSphere 4
Unix - Solaris, AIX, HP/UX,
MS Windows 2000, 2003 & 2008 Server
Linux - Red Hat, SuSE, etc.
Mac OS X

Software
MS Exchange
MS-SQL
MySQL
Oracle
Various Backup & Recovery systems
SharePoint