3-2-1 backup advice

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basil92008 Forum Member • Posts: 82
3-2-1 backup advice

Ordered a new Imac and want to beef up my backup processes as well.

Currently implementing 3-2-1 backup as follows:

Mac internal SSD - applications, system, LR catalog, etc, about 300 GB used

Sandisk 2TB Extreme Portable SSD - all data - about 1.5 TB used

Old Airport base station 3 TB - no longer used as router, connected to google mesh in a diff location in same house. Backs up Mac SSD and Sandisk external via time machine.

Backblaze $6/month plan cloud storage

When the Sandisk gets full, it looks like I would be looking at some sort of DAS RAID 5 solution. Maybe something along these lines? https://eshop.macsales.com/shop/thunderbay-4/thunderbolt-3-raid-5

Looking at 12 TB RAID 5 would be 9TB available storage, $870

But what's the solution for when the Airport base station fills? NAS?

Do I really need both RAID in both DAS and NAS? Seems like a bunch of overkill for what I expect to be somewhere in the 3-6TB range of data in the next few years.

Thanks in advance!

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