I'm pretty new to NetApp and I'm creating a new Snapshot policy on my primary cluster (AFF) and SnapMirror/SnapVault relationships on my DR cluster (FAS). Right now we don't have an official RPO/RTO but I need to get something going. Assuming that we have plenty of space available, does this seem good or maybe a bit excessive?
Prod Snapshots
SSD – 24 hourly, 7 daily, 2 weekly
DR SnapMirror/SnapVault
SAS – 168 hourly (7 days)
NL-SAS – 91 daily (13 weeks), 52 weekly (1 year), 36 monthly (3 years)
If I need to recover a file that’s past the prod retention, is it simple to recover if from DR? If so then I think I’ll lower my prod retention.