How strong of a magnet do you need to erase the data on an old-fashioned tape backup system (as in, one of those things that spins around with reels and tapes)?

Magnetic tape history hi-res stock photography and images - Alamy

Why were magnetic tapes used to replace punch cards in second

Magnetic tape: The surprisingly retro way big tech stores your

Any idea what this couldve been used for? : r/vintagecomputing

Why did computer tape reels go back and forth instead of all the

7 INCH: This is an empty tape reel for use with reel to reel tape players. This reel fits on any open reel deck that 1/4 7 inch diameter tape. ANTI

Long Play Analog Recording Tape by ATR Magnetics, 1/4 7 Inch Empty Aluminum Alloy Take Up Reel to Reel Small Hub, Tape Reel Empty Disc Opening Machine

Tape drive - Wikipedia

A History of Removable Computer Storage

Can damaged data be retrieved from Linear Tape-Open (LTO) backup

Can damaged data be retrieved from Linear Tape-Open (LTO) backup