Page History

...

1. FIXEdge binaries and configuration (~1 GB)
2. FIX session logs with fix FIX messages.
   Depends on the maximum expected number of messages per day multiplied by the average size of messages;
3. Application logs (tens - hundreds MB per day):
   1. application status and errors,
   2. sessions statuses changes,
   3. validation errors,
   4. monitoring notes.
   Sessions and messages flow with issues generate more logs than the issues-free flow. 
4. Reserve extra space for core files ( few GB )

Additional items consuming space

Best The best practice is a reservation to reserve space for unexpected consequences.

...