IBM Aspera HST Admin Manual page 344

To send random data in place of a source file (do not read from the source), you can specify the file as
faux:///fname?fsize.fname is the name assigned to the file on the destination and fsize is the number of bytes
to send. fsize can be set with modifiers (k/K, m/M, g/G, t/T, p/P, or e/E) to a maximum of 7x2
For example:
# ascp --mode=send --user=username --host=host_ip_address faux:///fname?fsize target_path
Faux Source Directory
In some cases, you might want to test the transfer of an entire directory, rather than a single file. Specify the faux
source directory with the following syntax:
faux:///dirname?
file=file&count=count&size=size&inc=increment&seq=sequence&buf_init=buf_option
Where:
• dirname is a name for the directory (required)
• file is the root for file names, default is "file" (optional)
• count is the number of files in the directory (required)
• size is the size of the first file in the directory, default 0 (optional). size can be set with modifiers (k/K, m/M, g/G,
t/T, p/P, or e/E) to a maximum of 7x2
• increment is the increment of bytes to use to determine the file size of the next file, default 0 (optional)
• sequence is how to determine the size of the next file: "sequential" or "random". Default is "sequential" (optional).
When set to "sequential", file size is calculated as:
size + ((N - 1) * increment)
Where N is the file index; for the first file, N is one.
When set to "random", file size is calculated as:
size +/- (rand * increment)
Where rand is a random number between zero and one. If necessary, increment is automatically adjusted to
prevent the file size from being negative.
For both options, increment is adjusted to prevent the file size from from exceeding 7x2
• buf_option is how faux source data are initialized: "none", "zero", or "random". Default is "zero". "none" is not
allowed for downloads (Ascp run with --mode=recv).
When the defaults are used, Ascp sends a directory that is named dirname and that contains count number of zero-
byte files that are named file_count.
For example, to transfer a faux directory ("mydir") that contains 1 million files to /tmp on 10.0.0.2, and the files in
mydir are named "testfile" and file size increases sequentially from 0 to 2 MB by an increment of 2 bytes:
# ascp --mode=send --user=username --host=10.0.0.2 faux:///mydir?
file=testfile&count=1m&size=0&inc=2&seq=sequential /tmp
Faux Target
To send data but not save the results to disk at the destination (do not write to the target), specify the target as
faux://.
For example, to send a real file to a faux target, run the following command:
# ascp --mode=send --user=username --host=host_ip_address source_file1 faux://
60
bytes (7 EiB).
| Appendix | 344
60
bytes (7 EiB).
60
bytes.