Been trying to figure out if there are any processes that run weekly/daily on Compellent besides data progression and replication. We use compellent storage centre Ver 6.2.2 and Enterprise Manager.  I see a latency spike every week on two days(thu and Fri) that are not even our busy days. There are no read or write bytes or IOPS that trend with this increase in latency. I see it every week and on all the database volumes regardless of how busy the volumes are. There is no known impact to performance yet but worried that it may, in the future. The replay is at midnight and progression is not on specific days so what else could it be? We contacted co-pilot. They have not been very forthcoming because they say we have not exceeded any threshold yet. They have not been able to tell us what else runs in the background. 

Any ideas or information to figure / fix this, would be helpful.

 Renji