Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watnot!watmath!clyde!cbatt!ucbvax!JASPER.PALLADIAN.COM!dp
From: dp@JASPER.PALLADIAN.COM.UUCP
Newsgroups: mod.computers.vax
Subject: tapes etc.
Message-ID: <870303145029.1.DP@BANFF.PALLADIAN.COM>
Date: Tue, 3-Mar-87 14:50:00 EST
Article-I.D.: BANFF.870303145029.1.DP
Posted: Tue Mar  3 14:50:00 1987
Date-Received: Fri, 6-Mar-87 02:38:27 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: Jeffrey Del Papa <DP%JASPER@LIVE-OAK.LCS.MIT.EDU>
Distribution: world
Organization: The ARPA Internet
Lines: 50
Approved: info-vax@sri-kl.arpa


    Date:     Mon, 2 Mar 87 23:50 EST
    From:     <ANK%CUNYVMS1.BITNET@wiscvm.wisc.edu>

    There is a tape that was made in VMS format and files ciopied into it

    When we mounted it and copied from mtb0: to drb0: it increased tenfold.

    I tried the convert/fdl but it did not work ? the basic info is as follows

    on tape if we do a DIRECT/FULL it gives the file structure as follows:


    Directory MTB0:[]

    MODEL_7.DAT;2                 File ID:  (1,1,1)
    Size:          129/129        Owner:    [261,4]
    Created:  28-DEC-1985 00:00   Revised:   <None specified>
    Expires:   <None specified>   Backup:    <No backup done>
    File organization:  Sequential
    File attributes:    Allocation: 129, Extend: 0, Global buffer count: 0, Version
    limit: 0
    Record format:      Variable length, maximum 73 bytes
    Record attributes:  Carriage return carriage control, Non-spanned
    Journaling enabled: None
    File protection:    System:RWED, Owner:RWED, Group:RWED, World:RWED
    Access Cntrl List:  None

    but after coping by straight COPY MTB0:*.* DRB2:*.*

    SIZE increases 30 times so does the allocation.

    We cannot afford to have 2000 blocks translate to 43000 blocks over 8 files
    since we have over 500 user accounts in our VAX11/780

						    Thanks

						    Anil Khullar
					    {Ph.D. Program in Psychology
					     City Univ. Graduate Center.
						New York NY 10036}
					    ank%cunyvms1.BITNET@wiscvm.edu




the reason for this is that blocks on tape drives are larger than disk blocks. a tape
block is 8kb. a disk block is 512 bytes.

<dp>