The memory size of the largest storage in the 90s?

Question

Iron

Hello, tell me how much data warehouses were in the 90s, 00s, how much data large companies could keep. And in what sizes was this data already calculated in petabytes, exabytes or more?

Answer 1

In those days, magnetic tapes were used to store data.
All other carriers were short-lived and unreliable.
Well, you need to understand that then it was not yet the norm to collect and store everything.
Basically, it was either accounting or the current client base.
Most of the information is on paper.

Answer 2

It is difficult to say, since this is just the approximate time of their birth.
Volumes grew significantly literally every year, here you can’t limit yourself to a range, here you need to look at a specific year and rummage through the price lists and booklets of those years.
"In the fall of 1990, when EMC introduced the disk array legend Symmetrix, the 4200 ICDA model had a capacity of 24 GB , 256 MB cache, and a 32-bit processor-based controller. Symmetrix propelled the company to a leading supplier of mainframe storage within a few years ."
in 1993 they doubled the volume and in 2005 there was already a whole petabyte.

Answer 3

In mega bytes.
1992 Machine EC-1046.
Equipment - 8 tape recorders for tapes with a density of 32 bit / mm (20 Mb), 4 tape recorders for tapes with a density of 256 bit / mm (140 Mb, the tape was extremely scarce and was used only by admins), 4 removable disk drives 32 Mb, 4 removable disk drives 100 Mb, 4 non - removable disk drive 300MB .
It was possible to put a replacement package in removable disks (like the current rack), while the package weighed several kilograms - it was a big round crap with a handle that was forbidden
to be lifted with one hand. When the drive came to readiness, it really bounced slightly in place :)
More 3 ADCs were connected to it (this is NOTPrinter! It is rather an incredibly high-speed typewriter that beat the entire line, but on the same principle - hitting a set of letters through an ink ribbon), a device for input from punched cards and output to punched cards ("barmaley"). The first department was very fond of punched cards, when settlement tasks came from there, a special person came, brought with him a removable disk, a pack of cards and took all the printouts with him, even defective ones :)
There was also a terminal class - 16 terminals with monitors and keyboards - by the way, keyboards are there were not the same as now, the layout is slightly different - and a couple of "daisies" - printing devices that already resembled dot-matrix printers.
What petabytes are there :) When in 1996 I bought a disk for 1 ( one!) gig, then I stood and thought - to fight, where will I put such a break through the place? :)