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- What do you want to restore from your backup or archive? Specific files? All files as of a specific date?
- How fast do you need it? I.e., what is your Recovery Time Objective (RTO)?
- What is your Recovery Point Objective (RPO)? I.e. how far out-of-date can objects be when restored?
- E.g., A server RPO may be 24 hours, meaning that its OK to have restored files be as much as 24 hours old, but no older.
- Should different versions of backed-up/archive objects be kept? Or, do you always want the latest version?
- How often do you envision having to restore data?
- Some service pricing is fairly expensive when you actually need to restore data, especially in short timeframes.
- What are the basic metrics of the data in scope for your use case?
- Total cumulative size of target data?
- Total number of target files/objects?
- Total number of target files/objects < 128KB?
- Some services handle smaller objects differently than larger objects
- Estimate the of Estimated number of target files/objects deleted before 90 days
- Some services require a minimum object lifetime and will charge you for storing the object for the entirety of that period, even if the object is deleted before reaching that age.
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