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Apr 12, 2023 14:43:53   #
tgreenhaw
 
In 1982 I used to repair 300 megabyte hard drives that cost $45,000 and were the size of a washing machine and required lots of 220VAC.

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Apr 12, 2023 16:07:42   #
jerryc41 Loc: Catskill Mts of NY
 
tgreenhaw wrote:
In 1982 I used to repair 300 megabyte hard drives that cost $45,000 and were the size of a washing machine and required lots of 220VAC.


Amazing

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Apr 12, 2023 16:33:50   #
Frayud Loc: Bethesda,MD
 
Back in 1960 or so while working at BuWeps for the Navy we got an RCA (remember when they made room size computers?) hard disc. It was a single vertical disc a quarter of an inch thick and covered in brown magnetic material about the size of a picnic table. It heralded a new concept, "Random Access" at a time when large data bases were stored on a battery of 1 foot reels of tape each mounted on a tape machine the size of a refrigerator.

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Apr 13, 2023 07:10:39   #
jgudpns Loc: Pensacola, FL
 
I worked for Motorola Solutions two-way business from 1971 to well.. 4 years ago (!), and in the late 70's early '80s we got an Alpha Micro Computer for our Service Shop, which I programmed and set up for the service and inventory. Rack mounted PDP11 derivative, had a 10 MB CDC Hard Drive - 5mb of which was removable! It was also rack mounted and weighed close to 40 lbs! Those are the removable platters on top. the top of the drive opened and you'd place the removable drive inside...



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Apr 13, 2023 07:52:07   #
Jack47 Loc: Ontario
 
jerryc41 wrote:
In 2016, I paid $270 for a 500GB Samsung SSD. Now, I can get a 1TB Samsung SSD for $60. Amazing.


They were a newer technology back then, and you always pay a higher price for the latest toys.

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Apr 13, 2023 07:53:49   #
jerryc41 Loc: Catskill Mts of NY
 
jgudpns wrote:
I worked for Motorola Solutions two-way business from 1971 to well.. 4 years ago (!), and in the late 70's early '80s we got an Alpha Micro Computer for our Service Shop, which I programmed and set up for the service and inventory. Rack mounted PDP11 derivative, had a 10 MB CDC Hard Drive - 5mb of which was removable! It was also rack mounted and weighed close to 40 lbs! Those are the removable platters on top. the top of the drive opened and you'd place the removable drive inside...


That must have been a big deal back then.

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Apr 13, 2023 09:49:55   #
tgreenhaw
 
jgudpns wrote:
I worked for Motorola Solutions two-way business from 1971 to well.. 4 years ago (!), and in the late 70's early '80s we got an Alpha Micro Computer for our Service Shop, which I programmed and set up for the service and inventory. Rack mounted PDP11 derivative, had a 10 MB CDC Hard Drive - 5mb of which was removable! It was also rack mounted and weighed close to 40 lbs! Those are the removable platters on top. the top of the drive opened and you'd place the removable drive inside...

Hey those are the kind I used to fix. That is an 80MB SMD similar but smaller than the 300MB dives we used as well.

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Apr 13, 2023 10:35:01   #
TriX Loc: Raleigh, NC
 
Here’s the first disk drive I ever worked on - the IBM 2311 - storage for our shiny new 360 system in 1964/5:

IBM 2311 Disk Storage Drives, providing random direct access to 7.25 million 8-bit bytes per removeable disk pack. In Packed Decimal Mode the capacity is 14.5 numeric characters. Eight drives can be attached to a single control unit for a total of 58MB or 116 million digits.

Transfer rate: 156,000 bytes/sec
Average seek time: 85 milliseconds
Track-to-track access time: 30 milliseconds
Recording tracks: 2000
Cylinders: 200



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