Average access time for the high-end 2400ft. (46MB) 9-track tape looks like it's just over 2 minutes?
Brochure for a 1960s computer. Disk access time (70ms) actually looks pretty decent, although that disk only stores 292 kwords (32b+parity).pic.twitter.com/6u6DAZdbuM
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Actually a fairly substantial latency decrease in recent years. Some drives are now under ten microseconds.
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Magnetic drum (or fixed-head disk) was often used for swapping (predecessor of virtual memory), and was not used...
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... very much for file storage due to the limited capacity compared to moving-head disk.
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