Backup and recovery

The real question is when you last restored something from them. We regularly find jobs that have failed for months, the wrong folder being copied or an encryption key nobody can locate. A check takes one day, and afterwards you know exactly where you stand.

Only if the copy is unreachable from the network with the same credentials. Modern ransomware hunts for backup files and wipes them. At least one copy must therefore be kept apart, with its own login and locked against changes for a set period.

A common pattern is daily copies for 14 days, weekly ones for two months and monthly ones for a year. That also covers mistakes spotted weeks later. The Danish Bookkeeping Act requires accounting records to be retrievable for five years, so finance data often gets longer retention.

That depends on data volume and bandwidth. A 50 GB database from a local copy is usually back within a couple of hours, while pulling it from the cloud takes longer. We measure the exact figure during the test restore and record it in the plan, so you know it ahead of time.