System Requirements

 
Operating Systems

• SCO Unix 3.2v4.0 (or later) with TCP/IP 1.2
• SCO Open Desktop Version 2.0 (or later)
• SCO Enterprise Server
• SCO OpenServer 5
• SCO UnixWare 7

The general requirement is that each machine have SCO Unix 3.2v4.0 (or later), and TCP/IP version 1.2 (or later) installed.

 
Disk Space

SavWareHA will take approximately 1 megabyte of disk space on the root filesystem of each system for the programs and configuration files. Also, disk partitions of equal block size must be defined on each machine to provide a mirror of the user data.

Note: Because SavWareHA requires two fully functional SCO Unix operating systems (one on the Primary and one on the Standby), the root filesystem cannot be mirrored between the two systems. User accounts, printer setup and other configuration information can be automatically duplicated on each system using the /etc/mracdb functionality. Refer to the appendix for detailed instructions.

 
Memory

SavWareHA will use approximately 60Kb of memory during normal operation. An additional 16Kb will be used during a regeneration.

 
Network Cards

In addition to requiring SCO TCP/IP, any network card supported by the SCO LLI (Link Level Interface) Drivers or SCO TCP/IP can be used by SavWareHA. Refer to the SCO “Hardware Compatibility Guide” for a detailed list of supported network cards. One network card is required in each system for the data mirroring. Additional network card(s) connecting to separate networks are recommended if users on the system will be using networking devices and software.

 
Serial Device Connection

A terminal server (either Ethernet based, or using a proprietary connectivity scheme) is required if serial devices (printers, terminals, modems, and the like) are going to be connected to the SavWareHA system’s IO Link and are to be switched automatically to the Standby System if a failure occurs. Any multi-host capable serial connectivity scheme, such as the Equinox SST, that is supported under SCO Unix may be used.