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Tivoli Storage Manager for NetWare Backup-Archive Client Installation and User's Guide
To run a full incremental backup, use the incremental
command. Tivoli Storage Manager runs an incremental backup on the
volumes you specify in your client domain using the domain
option. The volumes you specify can include the NDS. See Incremental for more information about the incremental
command. See Domain for more information about the domain
option.
You can specify the volumes you want to back up in any of the following
ways:
- To run a full incremental backup of your client domain, enter the
following command:
load dsmc incremental
If you do not set the domain option in your client options file
dsm.opt, Tivoli Storage Manager backs up all locally mounted
volumes and the NDS.
- You can use the domain option with the incremental
command to back up other volumes in addition to the volumes you specify in
your default client domain. For example, if you enter the following in
your client options file:
domain sys: data: nds:
and the following on the command line:
load dsmc incremental -domain=usr:
Tivoli Storage Manager performs an incremental backup for your
sys:, data:, and usr:
volumes and the NDS.
- You can back up specific volumes. For example, to back up only the
data: and sys: volumes, enter the following
command:
load dsmc incremental data: sys:
Use the incrbydate option with the incremental
command to back up new and changed files with a modification date later than
the last incremental backup stored at the server. For example, to
perform an incremental-by-date back up of your default client domain, enter
the following command:
load dsmc incremental -incrbydate
See Incrbydate for more information about the incrbydate
option.
You can use the selective command to back up specific files, a
group of files with similar names, entire directories, the NDS, or the
NDS. This is called a selective backup.
You can use more than one file specification on the selective
command. For example, to back up the
sys:proj/test.doc and the NDS files, use:
load dsmc selective sys:proj/test.doc nds
For more information, see Selective.
If you back up a directory, you can use the
subdir=yes option to include all the subdirectories
under that directory in the backup.
For example, to back up the sys:proj directory and its
subdirectories, use:
load dsmc selective sys:proj/ -subdir=yes
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 volume or other set of files.
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.
- 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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