this post was submitted on 01 Jan 2024
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The magnetic read write head is going to be difficult to manufacture. The gearing will need to be 100% on point. You will either need a PCB custom made for your project or you will need to program an Arduino or pi to perform the tape backup. Your OS will need software to manage the data transfer.
You can store 30tb on tape for well under $100. It's the magnetic tape itself that costs.
You could buy a used tape drive and cassette for less than the cost of a HDD of the same capacity.
Tape storage is slow and finicky. Retrieving is even slower due to seek time.