Dell Equallogic PS arrays have a new "feature" introduced from firmware version 8 onwards, this feature warns you if your snapshot space is below a 15% threshold. It looks something like this
"WARNING event from storage array EQLName
time: Wed Jun 12 00:00:05 2016
Free space is below threshold of 15 percent for pool PoolName. Default Snapshot Schedule will run with max-keep set to 1."
Now if you are not using snapshots or do not need to be reminded every day that this situation exists then you can do the following via the CLI.
To disable the default policy run the following commands:
To verify: grpparams default-snapshot-sched show
To disable: grpparams default-snapshot-sched disable