Canary’s store and forward provides for local buffering of data should the historian server be offline or the network connecting the data collector and the historian is interrupted.

Q: Is there a limit in the amount of data Canary can buffer?

A: Canary will buffer the data to local disk. Data will continue to buffer until no more than 100 MB of disk space remains.

Q: What happens if the limit is reached?

A: Once the disk space limit has been reached, no new records will buffer.

Q: Where is the data buffered?

A: Data is written to disk and stored in the C:\ProgramData\Canary Labs\Sender\Buffer\ directory

Q: If electrical power is interrupted while buffering data, is that data lost?

A: Since data is written to disk, rather than stored in memory, the data will persist, even if power is lost to the machine.