Usually companies have default backup procedures for all permanent on-premises storage. My company does. Find out from your storage experts what they are - daily, weekly, monthly, incremental or full. The key thing is to ensure all SAS server permanent storage is backed up, including SAS applications and the data for these. Exclude SAS temporary storage from being backed up.
You should really have a discussion with your management regarding backup policy. There may already be backup standards in your company that you need to adhere to. That's certainly the case with mine and we walked through the requirements at the server design stage.
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