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Moving and Accessing SAS Files across Operating Environments

Transport File Attributes

File attributes describe the organization and format of the data in the transport file that is transferred to a target host. A transport file must have these attribute values:

Note:   A file that is created with CEDA features does not need these attributes.  [cautionend]

Logical record length (LRECL) 80
Block size (BLKSIZE) 8000 bytes
Record format (RECFM) Fixed block

Note:   In some cases, a Block Size value of less than 8000 may be more efficient for your storage device. The Block Size value must be an exact multiple of the Record Length value.  [cautionend]

You must set file attributes to move a transport file from an OS/390 host to any other target host. Although not required, file attributes may be set for all other source hosts. How file attributes are declared depends on the source host at which the transport file is created and on the transfer method used. For details about setting file attributes for these hosts, see the appropriate chapter in Part 5.

Furthermore, through the communications software protocol, you must additionally specify file attributes for files on hosts that require them. For example, if you transfer a transport file from a UNIX host to an OS/390 host, you must specify file attributes through the communications software.

Besides setting file attributes for those hosts that require it, ensure that your communications software does not alter the default file attribute settings for any host.

Alternatively, in order to transfer a transport file from a source host to tape and then from tape to disk at the target host, you use host-specific commands that define the input and output devices for the hosts involved in the transfer. See the appropriate chapter in Part 5 for details about tape commands.

After the transport file is created, it must then be transferred to the target host either across the network or by means of a mountable magnetic medium such as a floppy disk or a tape.

The incorrect setting of file attributes is a major source of transport problems for which error messages are reported.

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