Path: utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: wsrcc!wolfgang@uunet.uu.net (Wolfgang S. Rupprecht)
Newsgroups: comp.sys.sun
Subject: Re: Output blocksize on Fujitsu 9-track
Keywords: Miscellaneous
Message-ID: <747@brchh104.bnr.ca>
Date: 11 Dec 90 13:05:36 GMT
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henry@zoo.toronto.edu (Henry Spencer) writes:
>In article <638@brchh104.bnr.ca> mtxinu!sybase!sid@ucbvax.berkeley.edu (S. Cowles) writes:
>>...When XX is 63 and smaller, the operation works
>>fine, no surprises.  64 and larger blocksizes cause the error...
>You don't specify what controller your magtape drive is on.  For a guess,
>it's a Xylogics 472.  The byte-count field on that controller is 16 bits.
>It is incapable of writing a block bigger than 64K-1 bytes.

SCSI itself has a similar limit.  Thats why one can't get more than 126
blocks of 512 bytes in one tape read or write.

Wolfgang Rupprecht    wolfgang@wsrcc.com (or) uunet!wsrcc!wolfgang
Snail Mail Address:   Box 6524, Alexandria, VA 22306-0524