IT Consultant, System Architect, Virtual Instructor and Author 30 years consulting and hands on experience with Microsoft , Solaris, HP-UX, AIX and Linux environments Consulted at over 300 companies world-wide 30 yrs experience as an IT Consultant for accounting firms Oracle Solaris 10 and 11 Certified Professional Oracle Solaris Subject Matter Expert SPARC SuperCluster Engineer Developed Solaris 9, 10 and 11 certification exams for Oracle Corp. Published Author Authored 10 best-selling UNIX textbooks (Prentice Hall, Que, New Riders,Macmillan)Specialties and Experience: Oracle Certified Professional for Solaris, Trusted Solaris, IBM AIX, HP-UX, RHEL, CentOS, Ubuntu, Linux, Microsoft Windows Server. System and network administration, security administration, performance tuning and training.SPARC SuperCluster, Veritas Volume Manager (VxVM), Oracle VM / Logical Domains (LDoms), Solaris Cluster, Solaris Zones, ZS3-ES ZFS Storage Appliance, LPARs, WPARs, DTRACE, ZFS, SVM, Shell scripting, DTrace, VPARs, XHTML,CSS, SQL, PERL, ChefTechnical writer, published authorSenior Unix System ArchitectTop Secret (TS) clearance with the DoD.