z/VSE (and predecessors) has supported 64K(i)B blocks/physical record size
for a long time, on tape and DASD.  You can write full track records to a
SAM (non-VSAM-managed) file.

Later,
Ray

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of Bruce Black
Sent: Wednesday July 20 2005 09:30
To: [email protected]
Subject: Re: capacity of largest drive

>
>
>The maximum track capacity is then 65,535 bytes.
>
No, the max size of a single record (block) is 65535 and most access methods
only support up to 32760.  But you can write multiple records per track, up
to 255 (the record number is 1 byte). 

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