HP XP20000XP24000 Disk Array - Manual (Page 54)

2-36 About Cross-OS File Exchange Operations
Hitachi USP V Cross-OS File Exchange User’s Guide
Bidirectional Data Transfer
FX supports bidirectional data transfer for both fixed-length and variable-
length z/OS datasets. Bidirectional data transfer involves transferring data
from z/OS datasets to open-system files and then back to the original z/OS
datasets again. The requirements for bidirectional data transfer are:
• For all FXmto operations, do not specify the record description word (RDW)
option. If the RDW option is specified for an FXmto data transfer, the
subsequent FXotm target dataset will not be compatible with the original
dataset.
• For FXmto with fixed-length datasets, do not specify the delimiter option,
since the data entities are extracted by length. If you add delimiters for the
FXmto transfer, the subsequent FXotm target dataset will not be compatible
with the original dataset.
• For FXmto with variable-length datasets, you must add delimiters but not
padding. If delimiters are not added or if padding is added for the FXmto
transfer, the subsequent FXotm target dataset will not be compatible with the
original dataset.
• For FXotm operations do not specify the delimiter option if the source file
contains the same character(s) as the delimiter (CR and/or LF) but used for
purposes other than delimiting data entities. If you specify the delimiter
option for FXotm, FCU will interpret all occurrences of the specified delimiter
character(s) as delimiters, which can create a dataset with corrupt records or
generate an error condition.