[NAS-7410] Sometimes the SmartSync task will be terminated by a reason "memory low", what's the possible cause?

Because SmartSync is a memory-consuming operation, memory utilization rate is critical when launching this task. When NAS-7410 detects the free memory is low, the program will terminate the synchronization task. To avoid this situation, we suggest checking the following configurations or timing before launching SmartSync task.
1. Set the SmartSync task to perform at non-rush hour to avoid memory conflict with routine network services.
2. Set a proper SmartSync source path. If the SmartSync source includes up to millions files/directories, that will occupy most of the memory capacity when creating check list, it is suggested assigning the source path in multiple sub-directory in different tasks.