Nowadays it is normal to have 32 or 64 GB of capacity on our mobile devices, and that capacity is usually multiplied by several orders of magnitude on our PCs and laptops.
Storage technology has advanced incredibly in all these years, and to appreciate this evolution it is not a bad idea to take a short trip to the past and see how decades ago hard drives were heavy and cumbersome monstrosities that also had very limited capacity and features.
The first example of that evolution we have it in the IBM RAMAC 305a monster that appeared in 1956 and was capable of storing 5 MB thanks to a system with 50 24-inch “platters”. That device rotated at a speed of 600 revolutions per minute and generated such a quantity of heat that it was necessary to enclose it in a large “refrigerator” with two cooling systems.
Another curious fact about this product is that IBM already thought about a subscription model to make it profitable: clients who wanted to use this product had to pay $3,200 per month at the time, which would be equivalent to almost $30,000 today with inflation.
Miniaturization would still take years to reach an industry that was trying to advance especially in the area of storage capacity: customers demanded more capacity, and those 24 inch plates wereAs seen in the image, huge. In this case these models reached 10 MB capacity per disk.
The giant of the time, IBM, dominated the sector for years, and in 1962 the company created the first “removable” drives. The IBM 1311 Disk Storage Drive made use of IBM 1316 “disk packs” that allowed the company’s customers to expand their needs to suit. From the 24 inches of the previous disks it went to 14 inches, with 2 Mbytes for each “pack”.
The path to smallness
Another of those storage devices It was UniDisc.a storage expansion that appeared in 1962 for the Univac 1004/1005 computers. That “flexible” disk similar to those used by IBM had a diameter of 14 inches and was capable of holding 2 Mbytes of information. The drive the disk was inserted into was about the size of a washing machine.
At that time, several manufacturers tried to be leaders in a promising sector, and among them was Burroughs, a mainframe manufacturer that, for example, launched this unit of 250 MB in 1979. A true marvel that used, pay attention, regenerative braking: when it was turned off, the motor became a magnetic brake: otherwise the discs continued spinning for an average of 4 hours.
A few years earlier IBM had already launched its new hard drive technology, the so-called “winchester“. The IBM 3340 drive had a smaller, lighter read/write head that had a design that allowed it to move across that surface at a tiny distance.
Things would advance from that moment even more rapidly, especially in the field of miniaturization (more or less) and the capacity of units that, for example, in 1980 already reached the gigabyte with the IBM 3380 unit. From that year 1980 is also the Memorex Mark XIV “disk pack” in the header image that was advertised as an “error-free” system. It had a capacity of 80 MB and was intended for Memorex disk drives that were again the size of a washing machine.
5¼ units would soon give way to 3.5-inch oneswhich would arrive first from the Rodime company (with former Burroughs employees, by the way). Their devices were capable of storing 6.38 and 12.75 Mbytes and would start a real trend in the PC and laptop market.
User needs continued to dictate smaller formats, and this led to 2.5-inch drives that are currently especially widespread due to their use in the solid state drive segment.
The rest, as they say, is history: 3.5-inch drives are still widely used today, but that revolution would be followed a few years ago by that of solid state drives or SSD (especially in M.2 format) that have allowed us to achieve reading and writing speeds that were unthinkable just a decade ago.
In the area of capacity and cost per gigabyte, yes, those traditional hard drives continue to be (for now) the kings of the market, but if we want examples of miniaturization, the 1 TB drives that SanDisk presented at CES seven years ago made things even better. And what remains.
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