About: D/CAS

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D/CAS (Data/CASsette), also known as a streamer cassette, is a now-obsolete data backup technology that used an upgraded version of the common audio cassette tape and a specialized tape drive derived from an audio tape transport. Holding anywhere from 200 to 600 megabytes, it was superseded by newer data backup formats such as Travan, QIC, DDS, and LTO.

Property	Value
dbo:abstract	D/CAS (Data/CASsette), also known as a streamer cassette, is a now-obsolete data backup technology that used an upgraded version of the common audio cassette tape and a specialized tape drive derived from an audio tape transport. Holding anywhere from 200 to 600 megabytes, it was superseded by newer data backup formats such as Travan, QIC, DDS, and LTO. Streamer cassettes look almost like a standard audio cassette, with the addition of a notch about one quarter inch wide and deep, situated slightly off-center at the top edge of the cassette. They also have a reusable write-protect tab on one side of the top edge, with the other side having either only an open rectangular hole, or no hole at all. Data was recorded in four tracks in a serpentine manner across the whole width of the tape, much like newer formats such as QIC or Travan, making them single-sided. Streamer cassettes can be used in an audio cassette deck, but the formulation of tape they contain is optimized only for full-saturation square wave digital data, resulting in audio recordings made on them having very poor audio quality and a large amount of noise and distortion. (en)
dbo:thumbnail	wiki-commons:Special:FilePath/Verbatim_ST-600_XD_Streamer_Cassette.jpg?width=300
dbo:wikiPageExternalLink	http://www.pacificdatastorage.com/teac_tapedrive.asp http://computer.yourdictionary.com/d-cas https://web.archive.org/web/20120629100407/http:/library.thinkquest.org/11309/data/tape.htm http://library.thinkquest.org/11309/data/tape.htm https://obsoletemedia.org/streamer-cassette/
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dbo:wikiPageWikiLink	dbc:Backup dbr:Magnetic_tape_data_storage dbr:Linear_Tape-Open dbr:Quarter-inch_cartridge dbr:Backup dbr:Tape_drive dbr:Transport_(recording) dbr:Digital_Data_Storage dbr:Cassette_tape dbr:Travan dbr:File:Verbatim_ST-600_XD_Streamer_Cassette.jpg
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dct:subject	dbc:Backup
rdfs:comment	D/CAS (Data/CASsette), also known as a streamer cassette, is a now-obsolete data backup technology that used an upgraded version of the common audio cassette tape and a specialized tape drive derived from an audio tape transport. Holding anywhere from 200 to 600 megabytes, it was superseded by newer data backup formats such as Travan, QIC, DDS, and LTO. (en)
rdfs:label	D/CAS (en)
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prov:wasDerivedFrom	wikipedia-en:D/CAS?oldid=976367840&ns=0
foaf:depiction	wiki-commons:Special:FilePath/Verbatim_ST-600_XD_Streamer_Cassette.jpg
foaf:isPrimaryTopicOf	wikipedia-en:D/CAS
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