Kofax Communication Server 9.1 - Manual (Page 90)

Environment Guide Version 3.00.04
90 © Copyright Kofax, Inc. All information is subject to change without notice.
8. Operating and Maintaining the KCS System
8.1 Operation of Tandem Server System with Software Status Agent
In general operation of the Software Status Agent is similar to the Status Box. For details see user manuals
for TCMON.
8.1.1 Recommended Power On/Off Sequence for Tandem Server
If possible, the following sequence should be used if a model 22x must be switched off or on manually.
Turning off a TC means stopping TCOSS. It is not necessary to power down the system!
If a release update should be made, it is also necessary to stop TCSRV.
1.) Turn off Primary Server
2.) Turn off Secondary Server (within 100s)
3.) Turn on Secondary Server
4.) Turn on Primary Server (within 100s)
8.1.2 Failure Recovery Time Tests with Tandem Servers
Some tests have been done with a Tandem Server to give an example of how long the system is
unavailable if the primary master fails and the secondary takes over and similar situations.
The Test System
A Model 300 based Tandem System was used for the tests. Primary and Secondary Server have the
following characteristics.
Hardware:
1 x 1400 MHz CPU
512 MB RAM
No RAID
OS: Windows 2000 SP4
KCS Software:
TC/SP 7.55.07
1 x TCOSS
TC/Web (only on Primary Server)
2 x LS1 Trace Tool (only on Primary Server)
KCS Configuration:
10 GB KCS File Structure
2 ISDN BRI Channels running in first LS1 (Booted by Primary, Secondary can take over)