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No end in sight for magnetic tape storage as IBM and Sony squeeze 201 gigabits per square inch | TelecomTV
![Ken Shirriff on Twitter: "Monthly maintenance of the old IBM 1401 computers at @ComputerHistory. Most things are working, but a few problems. This video shows the IBM 729 magnetic tape drives happily Ken Shirriff on Twitter: "Monthly maintenance of the old IBM 1401 computers at @ComputerHistory. Most things are working, but a few problems. This video shows the IBM 729 magnetic tape drives happily](https://pbs.twimg.com/ext_tw_video_thumb/1435711312256851968/pu/img/36AmXcSEkcuhBZsX.jpg:large)
Ken Shirriff on Twitter: "Monthly maintenance of the old IBM 1401 computers at @ComputerHistory. Most things are working, but a few problems. This video shows the IBM 729 magnetic tape drives happily
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