DESCRIPTION AND OPERATION SYSTEM OPERATION - 2 WBPEEUI350001B0 ® support 150 computers. The open systems manager supports an INFI 90 database capable of containing a standard mix of points atone time. Open systems manager installation options can limit the number of simultaneous users, the types of subroutines honored or the number of points supported. The open systems manager is driven by the INFI-NET Ethernet server software package (in conjunction with the semAPI software. The Ethernet server software package is factory installed on the open systems manager hard disk drive and starts up automatically when the manager is installed and powered up. Figure 2-1. Open Systems Manager Block Diagram INFI-NET T00567B COMPUTER TRANSFER MODULE NETWORK INTERFACE MODULE SCSI INTERFACE MULTI-FUNCTION PROCESSOR INTERFACE ETHERNET ADAPTER 486-BASED ETHERNET SERVER I/O GRAPHICS ADAPTER SCSI ADAPTER SCSI BUS HARD DISK DRIVE FLOPPY DISK DRIVE INOSM01 OPEN SYSTEMS MANAGER ETHERNET (TCP/IP) COMPUTER SOFTWARE APPLICATION PROGRAMS VAX AND ALPHA AXP SYSTEMS CAN ALSO USE OPTIONAL DECNET APPLICATION PROGRAM BAILEY APPLICATION PROGRAMMING INTERFACE (semAPI) ALPHA AXP/ OPEN VMS SYSTEM APPLICATION PROGRAM BAILEY APPLICATION PROGRAMMING INTERFACE (semAPI) VAX/OPEN VMS SYSTEM APPLICATION PROGRAM BAILEY APPLICATION PROGRAM INTERFACE (semAPI) VAX/VMS SYSTEM APPLICATION PROGRAM BAILEY APPLICATION PROGRAM INTERFACE (semAPI) WINDOWS NT/95 KEYBOARD (PURCHASED SEPARATELY) MONITOR (PURCHASED SEPARATELY)