Backup philosophy

Mindset
3-2-1 Backup strategy
Restore strategy is more important than backup strategy
Testing backup plans would not be a bad idea. If we don't test backups, we don't have them. We must recheck backup/restore plans monthly, quarterly or yearly
The 3-2-1 Rule
3 means: having at least 3 total copies of data
1
- local machine
2
- external hard drive/removeable disk device
3
- cloud storage
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2 means: keep the backed-up data on 2 different storage types
1
- local machine
2
- cloud
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1 means: having at least 1 copy offsite
1
Even if you have two copies on two separate storage types but both are stored onsite, 
2
a local disaster could wipe out both of them. 
3
Keep a third copy in an offsite location, like the cloud.
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Approach a new system

Mindset for building HA and scalable system

Last modified 3yr ago

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Contents

Mindset

The 3-2-1 Rule