My first true hard drive was 15 meg — 90 lbs
Winchester — took 3 minutes to stabilize before heads could access platters.
Did you need to park the drive heads as part of the shut down?
Gotcha beat. IBM RAMAC 305. IIt had 50 24 inch platters and about 4.8 million A/N (alpha numeric, for those of you that don’t remember) ) characters.Also worked with IBM 1401s
using word mark programming and later, IBM 370-165s and 185s with 3.5 in chilled water mains for cooling. Those were the good old days!