| geek_nzoomed | October 9, 2008, 10:28 am | #1 |
| VHS tape backup!!! ?? rotfl! I have seen some old machines that had VHS tape drives in them for backing up data, i never realised there was such a thing, anyway i was reading in an old textbook, and it said its not reccommended! I know that VHS tape was supposed to be the old computer tapes, but ended up being used for video in the late 70s. anyone else seen an old VHS tape drive? |
|
|
| geek_flewy | October 9, 2008, 10:55 am | #2 |
| I dont think it was vhs, just standard tape drive |
| geek_r.g.nixon | October 9, 2008, 11:13 am | #3 |
| I think is was a hack of VHS video tape system so that computer users could backup data to the tape. Could have been cheaper than regular tape drives for computers. |
| geek_zevion | October 9, 2008, 11:46 am | #4 |
| The latest thing to backup huge data files is by storing them on tape. Video data especially.
See http://www.dvt.co.nz/Products/Tape-Backup/Quantum-LTO-3-A-Series-Tabletop-Drive and the price of this sucker...$14k! |
| geek_pyro_sniper2002 | October 9, 2008, 12:58 pm | #5 |
| Yeah one of my sites has an LTO2 media loader, put 8 tapes in it, kinda like a cd stacker. Unit was around 15k, adn then there is 20k worth of media to go with it... |
| geek_nzoomed | October 9, 2008, 5:15 pm | #6 |
| From what ive read on wikipediathe russiand seveloped a system that used your existing video machine! it would convert the data to a video signal that the video recorder would record onto VHS tape! lol I rember seeing in the 90s an old computer tower that had a whole bank of VHS tape drives in the front of it, never seen one since |
| geek_sirfer | October 9, 2008, 10:51 pm | #7 |
| Ha! What's wrong with punchcards? They're not magnetically susceptible and won't get corrupted by sunlight...kids these days...now get off my lawn! |
| geek_pcmaster | October 9, 2008, 10:54 pm | #8 |
| Problem with punchcards someone might swipe one from the middle of the stack and you wont know till you run the program. |
| geek_nzoomed | October 9, 2008, 11:02 pm | #9 |
| Lol what would the data transfer rate of punch cards be? how many bytes per card? i saw an early IBM video on youtube showing the latest magnetic tape system with provision for punchcards from oder systems after upgrading! lol |
| geek_poohy99 | October 10, 2008, 12:19 am | #10 |
| Figure roughly 80 columns of characters, perhaps 80 bytes per card. The IBM card readers that I used as a student one summer could rip through perhaps 50 cards a second, say 400 bytes/sec. |
| geek_nzoomed | October 10, 2008, 11:05 am | #11 |
| WoW!!! thats fast! 50 cards a second! what sort of equipment read the holes? Infra red Light or hundreds of tiny switches that the card would press onto? I guess it would be the latter! lol |
| geek_tptrader | October 10, 2008, 1:01 pm | #12 |
| LOL or drop a whole stack like I did and they weren't numbered. I never did that again. |
| geek_poohy99 | October 10, 2008, 3:58 pm | #13 |
| The IBM reader could hold a stack about 800mm thick. It would accelerate after starting so you needed several hundred cards to see it get up to top speed. Used lamps and photo-transistors I would assume for 1970's technology and was in a sound-insulated room with the line printer, both attached to a Burroughs 6700 at a university. Cost to use this was about $5 per cpu-minute. |
| geek_poohy99 | October 10, 2008, 4:53 pm | #14 |
| Found a reference, it was 2000 cards a minute, or 33.3 a second. |
| geek_r.g.nixon | October 10, 2008, 5:27 pm | #15 |
| And it made one cringe when a jam occurred - usually this meant typing up a new card or two! |
| Leave your comment: |
|
