How to estimate NetFlow, Eventlog, Syslog and other logs storage size in SapphireIMS?

Generally we follow following statistics for calculation of disk space -

  1. Network devices and Linux servers Syslog tend to send shorter logs (150-200 bytes/log) while Windows Security logs tend to be much larger (500-1000 bytes/log).
  2. NetFlow average size will be around 100-250 bytes per document size.

Example of NetFlow disk space requirement: Assuming FPS is 1000 and average log size is 200 bytes, then average requirement is 1000(FPS) x 200(Bytes) x 86400(Seconds) = 16GB per day.