About snapshot schedules

The Storage> snapshot schedule commands let you automatically create or remove snapshots for a file system at a specified time. The schedule indicates the time for the snapshot operation as values for minutes, hour, day-of-the-month, month, and day-of-the-week. The schedule stores these values in the crontab along with the name of the file system.

For example, snapshot schedule create schedule1 fs1 30 2 * * * automatically creates a snapshot every day at 2:30 AM, and does not create snapshots every two and a half hours. If you wanted to create a snapshot every two and a half hours with at most 50 snapshots per schedule name, then run snapshot schedule create schedule1 fs1 50 */30 */2 * * *, where the value */2 implies that the schedule runs every two hours. You can also specify a step value for the other parameters, such as day-of-month or month and day-of-week as well, and you can use a range along with a step value. Specifying a range in addition to the numeric_value implies the number of times the crontab skips for a given parameter.

Automated snapshots are named with the schedule name and a time stamp corresponding to their time of creation. For example, if a snapshot is created using the name schedule1 on February 27, 2016 at 11:00 AM, the name is: schedule1_Feb_27_2016_11_00_01_IST.