Transferring large files
When transferring large file often users get an impression that Syncrify client is hung and is not doing anything. This is not correct. To ensure the Syncrify process is working, try opening the Task Manager on Windows or use the top program on Linux to monitor its activities. You should check its:
- CPU usage
- Disk I/O - both read and write
- Network usage
What takes long?
Syncrify uses rsync algorithm to determine the portion of file that has changed and only transfers those bytes to the remove machine. This is done to save network traffic but at the cost of local disk I/O and CPU usage. At any given time Syncrify client can be doing one of the following:
- Computing data signatures for the source file - I/O and CPU is used
- Transferring data - Network is used
- Waiting for the server to respond - Idle
When you backup a file that is 20GB in size, it takes a long time even to perform a sequential read on the file.
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