For each disk, there are two groups of snapshots:
1. Internal CloudEndure snapshots needed for replication - 5-7 for each disk normally. Frequency and exact number depend on various factors, such as change rate on the source machine and network stability.
2. For Point-in-time snapshots the frequency and number of snapshots are exact - every 10 minutes in the last hour, every hour in the last day and every day in the last month (60 in total per disk).
There is currently no mechanism for users to adjust the frequency and number of snapshots.