It fluctuates based on the business. We own a warehouses where out of date is useless to them and the backup budget is very low, so we keep backups for once a day. We have an insurance company that need replicas of everything ever and cannot afford to lose time, for them we have virtual server replication happening every 30 seconds with recovery points every hour for 24 hours. Furthermore, we have a NAS dissertation writing services that we use windows backup to store as many backups as possible daily, on top of that they have a barracuda that stores info going back.
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