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- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!wupost!psuvax1!psuvm!auvm!UMSLVMA.BITNET!NASSER
- Message-ID: <IBM-MAIN%92090717353392@RICEVM1.RICE.EDU>
- Newsgroups: bit.listserv.ibm-main
- Date: Mon, 7 Sep 1992 17:18:11 CDT
- Sender: IBM Mainframe Discussion list <IBM-MAIN@RICEVM1.BITNET>
- From: David Nasser <NASSER@UMSLVMA.BITNET>
- Subject: Re: PROC TAPELABEL and 3490E drives
- In-Reply-To: Message of Fri, 4 Sep 1992 12:23:13 EDT from <FJH@SRU>
- Lines: 31
-
- Discussion of this topic has been interesting. Glad to see that some folks
- are still interested in *dinosaur* sequential media.
-
- A brief review of characteristics of 3480/90 drives over the years might
- be helpful to some of us (i.e. me).
-
- Correct me if I stub my toe.
-
- The original 3480's were:
- 1.) 18 track
- 2.) 550 feet long
- 3.) 38k bpi (density)
- 4.) .08 inch inter-block gap
- and a CART could hold about 240 mb at max.
-
- I'm told that a later incarnation of the 3480 implemented data compression
- with hardware. Was it different in any other way?
-
- What were the major differences of the original 3490 drives?
-
- Did the Blue gentleman say that the 3490E CART is 1100 feet long and that
- the drive reads/writes 18 tracks in each tape direction? With double the
- physical length and double the number of tracks (total) of the old 3480,
- does this mean that a 3490E CART can hold around 960 mb BEFORE compression?
- If so, I, for one, am impressed. How much do these beasts (the drives) cost?
-
- Regards,
-
-
- David Nasser NASSER@UMSLVMA
- St. Louis, Mo NASSER@UMSLVMA.UMSL.EDU
-