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> Optical discs promise to come one to two orders of magnitude closer to the limiting case of free mass storage than ever before. Other features of optical disc

> Optical discs promise to come one to two orders of magnitude closer to the limiting case of free mass storage than ever before. Other features of optical discs include improved reliability and a single technology for both on-line and archival storage with a long shelf life. Because of these features and because of (not in spite of) their non-deletion limitation, it is argued that optical discs fit the requirements of database systems better than magnetic discs and tapes. Wild view from where we sit today, but CDs were ~700MB in 1982. Seagate launched a 5MB hard drive in 1980 so.... not entirely absurd to think that `just don't delete things` could be the way of the future. We sorta adopted `just don't delete things` anyway though not with respect to RDBMS systems. Thanks for sharing!

joering2 4y ago
I recall the 10MB ad more. https://i.pinimg.com/originals/0d/b3/b6/0db3b67dcdd2edbedd5caeb95ac33274.jpg https://i.pinimg.com/originals/0d/b3/b6/0db3b67dcdd2edbedd5c... Classic!
PaulDavisThe1st 4y ago
1988: Schlumberger Cambridge Research takes possession of a new 1MB drive to be added to its VAXcluster. The drive is the size of ... a small refridgerator. It was quite a day!
- ta1243 4y ago
  Did you really mean Nineteen-Eighty-Eight? In PC Magazine from July 1988 there is an advert for a 15MHz XT for $575 with an optional 30MB Segate ST238 5.25" scsi hard drive inside for an extra $295 [0] The price hasn't dropped much since, it's now $206 for the drive [1] [0] https://archive.org/details/PC-Mag-1988-07-01/page/22/mode/2up https://archive.org/details/PC-Mag-1988-07-01/page/22/mode/2... [1] https://www.amazon.com/ST238R-Seagate-3600RPM-Internal-Drive/dp/B00DH3BYY8 https://www.amazon.com/ST238R-Seagate-3600RPM-Internal-Drive...
- WalterBright 4y ago
  At Aph we had 10Mb drives in 1978.
- gruturo 4y ago
  In Winter 1987 I had an Amstrad PC1640HDMD with a 20MB MFM hard disk. I opened the case many times, the disk was just a 5.25 inch device, certainly not like 20 small refrigerators, or even one. Bonus: I got an RLL controller and turned it into a 30MB hard disk! Couldn't believe it. But getting the interleaving right was time consuming..
- berkut 4y ago
  I suspect that was really 1 GB? 3.5" HDs of over > 20 MB for IBM PCs were around in IBM PCs at the time.
- PaulDavisThe1st 4y ago
  OK, so I think memory was wrong on this. I found this online: > In the 1980's we used 14 inch drives in our DEC VAX cluster. Each 14 inch drive had a capacity of about 450MB Those platters were definitely the 14" size, and there was more than one of them in the refridgerator-sized unit. At this temporal distance, I can't guess what the overall size was anymore, but it was clearly not 1MB. Sorry for the misleading post. Still, it was quite a day, regardless.
  - pinewurst 4y ago
    https://gunkies.org/wiki/RA81_disk_drive https://gunkies.org/wiki/RA81_disk_drive
    - PaulDavisThe1st 4y ago
      A single head? Amazing.
ocal5 4y ago
Isn’t the way of _Glacier_ ?

joering2 4y ago

I recall the 10MB ad more. https://i.pinimg.com/originals/0d/b3/b6/0db3b67dcdd2edbedd5caeb95ac33274.jpg https://i.pinimg.com/originals/0d/b3/b6/0db3b67dcdd2edbedd5c... Classic!

PaulDavisThe1st 4y ago

1988: Schlumberger Cambridge Research takes possession of a new 1MB drive to be added to its VAXcluster. The drive is the size of ... a small refridgerator. It was quite a day!

ta1243 4y ago
Did you really mean Nineteen-Eighty-Eight? In PC Magazine from July 1988 there is an advert for a 15MHz XT for $575 with an optional 30MB Segate ST238 5.25" scsi hard drive inside for an extra $295 [0] The price hasn't dropped much since, it's now $206 for the drive [1] [0] https://archive.org/details/PC-Mag-1988-07-01/page/22/mode/2up https://archive.org/details/PC-Mag-1988-07-01/page/22/mode/2... [1] https://www.amazon.com/ST238R-Seagate-3600RPM-Internal-Drive/dp/B00DH3BYY8 https://www.amazon.com/ST238R-Seagate-3600RPM-Internal-Drive...
WalterBright 4y ago
At Aph we had 10Mb drives in 1978.
gruturo 4y ago
In Winter 1987 I had an Amstrad PC1640HDMD with a 20MB MFM hard disk. I opened the case many times, the disk was just a 5.25 inch device, certainly not like 20 small refrigerators, or even one. Bonus: I got an RLL controller and turned it into a 30MB hard disk! Couldn't believe it. But getting the interleaving right was time consuming..
berkut 4y ago
I suspect that was really 1 GB? 3.5" HDs of over > 20 MB for IBM PCs were around in IBM PCs at the time.
PaulDavisThe1st 4y ago
OK, so I think memory was wrong on this. I found this online: > In the 1980's we used 14 inch drives in our DEC VAX cluster. Each 14 inch drive had a capacity of about 450MB Those platters were definitely the 14" size, and there was more than one of them in the refridgerator-sized unit. At this temporal distance, I can't guess what the overall size was anymore, but it was clearly not 1MB. Sorry for the misleading post. Still, it was quite a day, regardless.
- pinewurst 4y ago
  https://gunkies.org/wiki/RA81_disk_drive https://gunkies.org/wiki/RA81_disk_drive
  - PaulDavisThe1st 4y ago
    A single head? Amazing.

ocal5 4y ago

Isn’t the way of _Glacier_ ?