Kofax Communication Server 10.0.0 - Manual (Page 59)

Environment Guide Version 10.00.00
© Copyright Kofax. All information is subject to change without notice. 59
5.9.3 Test Results: Secondary Master Failure
The error scenario of a secondary master failure was simulated by stopping the TCSRV service on the
secondary master. The status agent was running during the tests.
The secondary master was stopped for 10 minutes, the test loop continued running. There was no
noticeable change in the performance of the primary master while it was running stand-alone, which means
that the tandem operation did not slow down the test workload.
After the secondary master was restarted it took about 45 minutes to update the primary master and come
back to the fault-tolerant mode.
The following performance values were measured on the primary master during the re-synchronization
phase. In the first test run the queue length of outbound faxes was below 700 and the TCOSS cache
worked well reducing disk reads to about 3 per second:
Object Instance Counter Value
Physical Disk D: (TCOSS) Disk Writes/sec 99
Disk Write Bytes/sec 622,000
Disk Reads/sec 56
Disk Read Bytes/sec 883,000
%Disk Write Time 61
%Disk Read Time 2.3
TCOSS Disk Read kB/sec 14
Reads/sec 3.4