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File 144437257243.jpg - (36.47KB , 401x303 , Cassette_Write_Protect_IV.jpg )
7427 No. 7427 ID: f0df0e
Picture this, Storing astronomical amounts of computer data on an audio recording device. Im not talking megabytes, but gigabytes or even terabytes.

But theres somthing I dont know, wether or not its even possible.

What is the highest frequency that can be recorded and played back reliably on an ordinary tape casset?
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>> No. 7428 ID: 8927f2
File 144437380954.jpg - (3.55MB , 2560x1920 , Storagetek-tape_drive_hg.jpg )
7428
There's better solutions. Audio casette media really isn't the highest grade.

Oh, and it's nothing new. Image related.
>> No. 7429 ID: f0df0e
>>7428

Its only for funzies, but if i had to how far could i push it?
>> No. 7430 ID: c561cd
File 144439901595.jpg - (77.49KB , 800x600 , 800px-Ibm-729v.jpg )
7430
>>7427
Yeah man that's some new technology there.

https://en.wikipedia.org/wiki/Magnetic_tape_data_storage

My brother talking about using regular VHS tapes and VCR to record data. He figured you could get 8-10 gb on a tape, with decent error recovery. Of course, this is when 10 gb was 50 hard disks worth.
>> No. 7431 ID: f2400b
>>7429

I'm not a hardware person, but quick research shows that currently IBM's TS1150 is the highest density tape storage medium.

https://en.wikipedia.org/wiki/IBM_3592

The cartridges are half inch tape, 4x5x1 inches per cartridge with one spool at 10 terabytes per. You might find more useful information for your question following the references off of that, or hunting down IBM's page, but you most likely won't be able to find a lot of specifics in the how.
>> No. 7432 ID: 6057a8
Apparently tapes are awesome for serious archive shit.

Pros
>pretty decent storage to physical size ratio
>when stored properly, information can be kept safe indefinitely (like for real, not "shelf life of 10 years so forever" marketing bullshit, we're talking about thousands of years easy)
>pretty cheap

Cons
>slow
>slow to access
>slow to everything
>when stored improperly, shit can get weird

I don't know that much about serious archive business so this might all be wrong. Right now I'm fine with my Synology NAS in RAID6 with 16tb of useful storage so I haven't really studied alternatives.
>> No. 7433 ID: 33338c
>>7432
Also way too easy for fucktards to damage or lose, and sensitive to any kind of magnetic field.
>> No. 7434 ID: 59b608
>>7427
The Commodore Datasette has been around since 1977 or so, and the Kansas City standard a couple years before that, so yes, using audio cassettes for data storage is possible. But VHS would be more practical, since it has a bandwidth of ~3MHz versus audiotape's ~30kHz.

You'd be better off getting some old SCSI tape drive and using that. Otherwise... I suppose it wouldn't be too difficult setting up a raspi or some little shitty microcontroller to control some VCR guts.
Hmmm.
>> No. 7435 ID: aa77ba
In the early 1980s Hewlett Packard were experimentally using standard VHS tapes for backups. They even released a box that could be hooked up for data backup.I know this as fact because I was working for HP at the time, it was released at the same time HP was demonstrating 3.5 inch hard drives with 40MB storage.
>> No. 7436 ID: 06a0fb
>>7431
your research is off by several orders of magnitude.

Sony released a high-density magtape casette at 185TB per tape in 2014, and IBM has developed, though not commerically released, a 220TB tape.
http://www.sony.net/SonyInfo/News/Press/201404/14-044E/index.html

http://www-03.ibm.com/press/us/en/pressrelease/46554.wss

>>7433
They are much improved from older styles of tape as to magnetic resistance. the CIA, FBI, Google, IBM, NASDAQ, NYSE and Chicago Mercantile Exchange and dozens of other major businesses all use mass magnetic tape storage for total catastrophic data loss and recovery.

The sneakernet is also another good reason why high density tapes are still used.
https://en.wikipedia.org/wiki/Sneakernet
>> No. 7440 ID: 5f423f
16kHz to answer OP's question for standard audio cassettes

This isnt anything new BTW, there were peripherals in the 70s and 80s that allowed you to store and load data on cassettes as a low cost option instead of diskettes. They were shit. Relatively low capacity (like 200kb), slow, and not random access. Also, it would just crash periodically and the whole process would have to be restarted. The cassette was always a shitty compromise format even when it was "the standard". Reel to Reel was far and away superior but expensive and vinyl isnt portable.

Tape backup at the high end of server farms and such has never gone away but its pointless for users.
>> No. 7441 ID: 06a0fb
http://www.nas.nasa.gov/hecc/resources/storage_systems.html

http://gator796-webadmin-primary.hgsitebuilder.com/product-categories/information/nasa-direct-to-disk-event-recording-system

http://www.theregister.co.uk/2013/01/28/google_oracle/
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