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Tivoli Storage Manager for UNIX Backup-Archive Clients Installation and User's Guide
During a backup, by default Tivoli Storage Manager displays the status of
each file it attempts to back up. Tivoli Storage Manager reports the
file's size, path, file name, total number of bytes transferred, and
whether the backup attempt was successful. Similar statistics are
produced by the selective and archive commands.
These also display in the dsmsched.log file for scheduled
commands.
If you have set the resourceutilization option, Tivoli Storage
Manager attempts to improve performance and load balancing by using multiple
sessions when it backs up a file space or other set of files.
The Web client and backup-archive client GUI provide a Task List
window that displays information about files during processing. When a
task completes, a Backup Report window displays processing
details. Click the Help button in the Backup Report window
for context help.
The command line displays similar information. On the backup-archive
command line the name of each file displays after it is sent to the
server. The progress indicator shows overall progress.
Informational messages may display as follows:
- Directory-->. Indicates the directory that you back
up.
- Normal File-->. Any file that is not a directory,
symbolic link or special file.
- Special File-->. Special files define devices for the
system or temporary files created by processes. There are three basic
types of special files: FIFO (first-in, first-out), block, and
character. FIFO files are also called pipes. Pipes are created
by one process to temporarily allow communication with another
process.These files cease to exist when the first process
finishes. Block and character files define devices. Tivoli
Storage Manager processes only device and named pipe special files.
Socket special files are not processed.
- Symbolic Link-->. Indicates that Tivoli Storage Manager
backs up a symbolic link.
- Updating-->. Indicates that only the file meta data is
sent, if file attributes change and not the data itself.
- Expiring-->. Indicates an object (file or directory) on
the server that no longer exists on the client is expired and made inactive on
the server.
- Total number of objects inspected.
- Total number of objects backed up.
- Total number of objects updated. These are files whose
attributes, such as file owner or file permissions, have changed.
- Total number of objects rebound. See Binding and Rebinding Management Classes to Files for more information.
- Total number of objects deleted. This is a count of the
objects deleted from the client workstation after being successfully backed up
to the server. The count is zero for all backup commands.
- Total number of objects expired. See Full Incremental Backup for more information.
- Total number of objects failed. Objects can fail for
several reasons. Check the dsmerror.log for
details.
- Data transfer time. The total time to transfer data
across the network. Transfer statistics may not match the file
statistics if the operation was retried due to a communications failure or
session loss. The transfer statistics display the bytes attempted to be
transferred across all command attempts.
- Network data transfer rate. The average rate at
which the network transfers data between the client and the server.
This is calculated by dividing the total number of bytes transferred by the
time to transfer the data over the network. The time it takes to
process objects is not included in the network transfer rate.
Therefore, the network transfer rate is higher than the aggregate transfer
rate.
- Aggregate data transfer rate. The average rate at
which Tivoli Storage Manager and the network transfer data between the client
and the server. This is calculated by dividing the total number of
bytes transferred by the time that elapses from the beginning to the end of
the process. Both Tivoli Storage Manager processing and network time
are included in the aggregate transfer rate. Therefore, the aggregate
transfer rate is lower than the network transfer rate.
Note: On occasion, the aggregate data transfer rate may be
higher than the network data transfer rate. This is because the
backup-archive client can have multiple simultaneous sessions with the backup
server. When multiple sessions are open during backup, the data
transfer time represents the sum of the times reported by all sessions.
In this case, aggregate data transfer time is mistakenly reported as
higher. However, when running with a single session, the aggregate data
transfer rate should always be reported as lower than the network data
transfer rate.
- Objects compressed by. Specifies the number of file-data
bytes sent over the net divided by the original size of the file on
disk. For example, if the net data-bytes are 10K and the file is 100K,
then Objects compressed by: == (1 - (10240/102400)) x 100 == 90%
- Elapsed processing time. The active processing
time to complete a command. This is calculated by subtracting the
starting time of a command process from the ending time of the completed
command process.
- Total number of bytes transferred.
- LanFree bytes transferred.
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