Don't get lost in the schematics of it all. Any media device that's NOT your primary storage becomes a extra storage or backup. It does depend on your main usage of said device. Depending on the s/w used should more clearly provide the total solution. If your primary storage craps out, I'm sure you'll use whatever is present to restore some status of a working system. This is where the s/w comes in, if primary use is storage, then bits of data or sub-folders or directories will be rescued. If used as back-up, then hopefully, it will be restored to the date of that back-up.
I previously posted questions on this topic. It was indicated that 'backup' and 'storage' drives were separate entities.
It appeared that 'backup' was for backup/restore only, not storage/access of individual files. Data could be backed up, then restored as a whole when required.
However, on several vendor's sites, reference was made to a 'backup storage drive'.
Perhaps the difference is in the use to which the product is initially dedicated, either storage or backup, but not both.
Are their differences in formatting, software, etc.? I am cofused once again.
Thankz.

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