I have 20/40 GB QIC cartridges. I believe these current max is in the
200-400 GB range.
Henry
Chuck Stickelman wrote:
The QIC standard is still almost alive.
The latest rendition is in the Travan family of drives, w/ Travan 20 (20g uncompressed capacity) being the standard bearer.
As the name implies, and Larry reiterated, the tape is 0.25" wide, with multiple linear tracks that are recorded bidirectionally. (Track 1 from beginning to end, track 2 from end to beginning, etc...) (I think there are about 65 tracks on the tape...) There's a big debate between linear vs. helical scan - the linear tracking crowd claim that pulling the tape out of the cartridge the way you have to do with helical scan (8mm, AIT, 4mm DAT, etc.) is a bad thing. The helical scan crowd claim that the amount, and speed, of tape movement needed in a linear scan approach increases the likelihood of tape stretch. Also a bad thing.
There are three tape technologies currently in use:
AIT - from Sony, I think it's in generation III. Uses an 8mm tape and helical scanning.
LTO (Linear Tape Open) - from IBM and others. The Linear part means that the data is laid out on the tape in multiple linear tracks. LTO cartridges have only one spool, the other is in the drive. (Very much like the old reel-to-reel tapes...)
Super DLT - also a linear technology.
Of course there are many other differences, the way the bits are encoded on the tape and whether or not the tape has a servo track for timing, are a couple of the more significant ones...
Tape often seems like an old-fashioned approach, but it has many advantages and can still be used effectively.
Chuck
larry wrote:
Quarter Inch Cartridge, stuff from the early 90's. 525MB tapes. I used one on my first NT box.
M. Knisely wrote:
What's a qic tape drive?
What's a csi hard drive?
Mike K.
Henry Keultjes wrote:
We are trying to recover some code from two old systems and need the above.
Anyone able to help?
Henry
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