z/OS Communications Server: IP User's Guide and Commands
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MOde subcommand—Set the data transfer mode

z/OS Communications Server: IP User's Guide and Commands
SC27-3662-00

Purpose

Use the MOde subcommand to define how bits of data are to be transmitted.

Format

Read syntax diagramSkip visual syntax diagram
>>-MOde--+-B-+-------------------------------------------------><
         +-C-+   
         '-S-'   

Parameters

B
Sets the block mode. In block mode, data is transmitted as a series of data blocks, preceded by one or more header bytes. Block mode preserves the logical record boundaries of the data set or file. When MOde is set to B, the data transfer type must be EBCDIC.

Specifying MOde B is equivalent to specifying the BLock subcommand.

C
Sets the compressed mode. In compressed mode, data is transmitted as a series of data blocks, preceded by one or more header bytes. Compressed mode preserves the logical record boundaries of the data set or file. In compressed mode, data is transmitted without repetitive characters and blanks. When MOde is set to C, the data transfer type must be EBCDIC.
Note: Because additional processing time is required for both the sender and receiver to compress or decompress the data, evaluate the time factor before you compress a file.

Specifying MOde C is equivalent to specifying the COMpress subcommand.

S
Sets the stream mode. In stream mode, data is transmitted as a stream of bytes. Any data transfer type can be used with stream mode. Stream mode is efficient because data block information is not transferred.

Specifying MOde S is equivalent to specifying the STREam subcommand.

Usage

  • To use MOde C, the receiving host must support the compressed data mode.
  • Data compression increases CPU processing costs even if the amount of data transferred is not large.

Context

Tip: Use MODE B or MODE C in conjunction with a CHKConfidence value of TRUE in FTP.DATA to improve detection of incomplete file transfers.

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