| Yes the limit has been increased to this
size, however the default alarm summary length remains at 1000
events. You can increase the [Alarm]SummaryLength parameter in your
citect.ini file to suit your project and capacity of your
computers. The data contained in each summary record is stored in
the alarm save file, "AlmSave.dat". The Process Analyst also
displays alarm information retrieved from the alarm save file.
There is a Windows maximum file size of 4 gigabytes for FAT and
16 terabytes for NTFS but memory will be key. The entire alarm
summary is stored in RAM on the alarm server. As the online Help
states, 32000 events require at least 6.2 megabytes of memory so 1
million events would require about 200 megabytes.
When an alarm server starts up, the other alarm server sends all
it's alarm summary records across to make sure both servers have
the entire alarm summary. The transfer is quite efficient and if
2.14 billion alarm events were logged, they could all be sent to
the starting alarm server. If for some reason (perhaps frequent
startup and shutdown) you want to disable the copying of the alarm
summary data on startup, this can be done by setting
[Alarm]SumStartupCopy=0.
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