Blocking factor 256 for ufsdump with DLT8000?

From: Peter Stokes (peter_at_ashlyn.co.uk)
Date: 09/30/04

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    To: Mailgroup - sunmanagers <sunmanagers@sunmanagers.org>
Date: Thu, 30 Sep 2004 11:02:23 +0100

    Hi All

    I have a customer running Sol 9 on his system (U60). He has customers
    also running Sol 9 (V240 amongst others). He has traditionally used a
    blocking factor of 256 with ufsdump (since 2.6 days he thinks) with no
    problems on other systems and this was recommended by Sun for DLT tape
    drives.

    The problem is that although this works fine for his customer's systems,
    when he comes to read the tapes on his U60 system, it reports an error
    straight away. If he then goes and puts the tape drive onto his
    customers system it reads fine. Also if he tries to write using 256 on
    the U60 it takes approx 4x longer to write the tape than with the
    default for ufsdump.

    It sounds like a buffer problem on the U60 system setup, but am unable
    to find any info.

    Anyone have any pointers?

    Peter

    ----------------------------
    Peter Stokes
    Ashlyn Computer Services Ltd
    Tel: +44 (0)1636-627900
    Mbl: +44 (0)7977-532320
    Fax: +44 (0)1636-627909
    ----------------------------
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