Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!linac!mp.cs.niu.edu!ux1.cso.uiuc.edu!director.beckman.uiuc.edu!melanie From: melanie@director.beckman.uiuc.edu (Melanie Anderson) Newsgroups: comp.unix.ultrix Subject: Re: tlz04 density Message-ID: <1991May15.183245.10467@ux1.cso.uiuc.edu> Date: 15 May 91 18:32:45 GMT References: <1991May15.012025.2766@ux1.cso.uiuc.edu> Sender: usenet@ux1.cso.uiuc.edu (News) Organization: University of Illinois at Urbana Lines: 40 aej@manyjars.WPI.EDU (Allan E Johannesen) writes: >On 15 May 91 01:20:25 GMT, >melanie@director.beckman.uiuc.edu (Melanie Anderson) said: >melanie> Sender: usenet@ux1.cso.uiuc.edu (News) >melanie> what is the 'recording density' of a TLZ04? and length? >melanie> inquiring minds want to know. >With a simple test program, I found I could write 107,528 10240 byte >blocks to the dat before error. It would write 39,792 32768 byte >blocks, if anyone cares (I have a different system which writes this >different 'dump' blocksize). thanks for the info, but that's not exactly what i asked. i already know i can get about a gig or so on a tape. i meant 'record density' as in 'bit density' as in 1600bpi or 6250bpi or 2**164b/sqmm or whatever. you can take blocksize * total blocks written to end of tape / tape length and get a rough approximation, but that ignores the inter-block gap and also assumes you know the length (which i can't find anywhere on the packaging of the maxell tapes i buy, i mean, you get all sorts of bizzare tape info on commercial audio cassettes like length, dynamic range, record speed, shell color availability, but all i get on my dat tapes is "Adoption of newly developed superfine ceramic armor metal-particle magnetic material achieves superb durability and high output. Reproduces excellent high-fidelity digital sound even after repeated use." well i would certainly *hope* so!) this is all just for my own personal edification -- diatribes on how DAT data is recorded would be most welcome. the TLZ manual is not exactly informative. -- Melanie Anderson msa@uiuc.edu Beckman Institute PHMETR::MELANIE University of Illinois 217/244-1079 ----------------------------------------------------------------------------- Of all the things I've lost, I miss my mind the most. -----------------------------------------------------------------------------