The incremental command backs up all new or changed data in the locations that you specify, unless you exclude them from backup services.
You can back up all new or changed files or directories in the default client domain or from file systems, directories, or files.
To incrementally back up selected files or directories, enter a file specification in the command. If you do not enter a file specification, the default is to back up files or directories in the default domain.
AIX® only: You can enable snapshot-based incremental backup by using the option snapshotproviderfs=JFS2.
The following attributes in the management class that is assigned to the file or directory affect whether the data is backed up:
This management class attribute is ignored during a journal-based backup.
This management class attribute is ignored during a journal-based backup.
Using the include option in an include-exclude list, you can override the default management class for a file or group of files.
You can perform either a full incremental backup or an incremental-by-date backup. The default is a full incremental backup.
If you are journaling a file system and the journal is valid, the full incremental backup performs a journal-based backup. More than one journal-based backup session can be started, but only one journal-based backup session can proceed. All other journal-based backup sessions that need access to the same file space must wait until the current journal-based backup session completes before the next session can proceed. You can perform a full incremental backup without the journal by using the nojournal option.
You can also use the selective command to perform a backup that backs up only the files, directories, or empty directories that you specify regardless of whether they were changed.
A full incremental backs up all files or directories that are new or were changed since the last incremental backup. During a full incremental backup, the client queries the server. Tivoli® Storage Manager uses this information when it performs the following actions:
A full incremental backs up all files or directories that are new or were changed since the last incremental backup. During a full incremental backup, the client queries the server or the journal database. Tivoli Storage Manager uses this information when it performs the following actions:
This command is valid for all clients.
.-------------------. V | >>-Incremental--+------------+----+---------------+-+---------->< '- --options-' +- --filespec---+ '- --"filespec"-'
>>-Incremental--+------------+--+-----------------+------------>< '- --options-' | .-------------. | | V | | '--- --filespec-+-'
If you specify a file system, all new and changed files are backed up. In addition, the last incremental date for the file space is updated on the server. If you specify a file or directory, the last incremental date is not updated. This means that the file or directory might be backed up again if a later backup is performed by using the incrbydate option. If you specify a file system, specify the file system without a trailing slash.
If you specify a file system, all new and changed files are backed up. In addition, the last incremental date for the file space is updated on the server. If you specify a file or directory, the last incremental date is not updated. This means that the file or directory might be backed up again if a later backup is performed by using the incrbydate option. If you specify a file system, specify the file system without a trailing slash.
Option | Where to use |
---|---|
absolute | Command line only. |
autofsrename | Client options file (dsm.opt) only. |
changingretries | Client options file (dsm.opt) or command line. |
changingretries | dsm.sys file or command line. |
compressalways | Client options file (dsm.opt) or command line. |
compressalways | Client user-options file (dsm.opt) or command line. |
compression | Client options file (dsm.opt) or command line. |
compression | dsm.sys file within a server stanza or command line. |
detail | Command line only. |
diffsnapshot | Command line only. |
dirsonly | Command line only. |
domain | Client options file (dsm.opt) or command line. |
domain | dsm.sys file or the client user-options file (dsm.opt) or command line. |
encryptiontype | System-options file (dsm.sys) within a server stanza. |
encryptiontype | Client options file (dsm.opt). |
encryptkey | Client options file (dsm.opt). |
encryptkey | System-options file (dsm.sys) within a server stanza. |
filelist | Command line only. |
filesonly | Command line only. |
incrbydate | Command line only. |
memoryefficientbackup | Client user-options file (dsm.opt), server, or command line. |
memoryefficientbackup | Client user-options file (dsm.opt), client system-options file (dsm.sys), server, or command line. |
nojournal | Command line only. |
nojournal | Command line only. |
postsnapshotcmd | Client options file (dsm.opt) or with include.fs option. |
preservelastaccessdate | Client user-options file (dsm.opt) or command line. |
preservelastaccessdate | Client options file (dsm.opt) or command line. |
presnapshotcmd | Client options file (dsm.opt) or with include.fs option. |
removeoperandlimit | Command line only. |
resetarchiveattribute | Client options file (dsm.opt). |
skipntpermissions | Client options file (dsm.opt) or command line. |
skipntsecuritycrc | Client options file dsm.opt) or command line. |
snapdiff | Command line only. |
snapshotcachesize | Client options file (dsm.opt) or with the include.fs option. |
snapshotproviderfs | System-options file (dsm.sys) within a server stanza or with the include.fs option. |
snapshotproviderimage | Client options file (dsm.opt) or with the include.image option. |
snapshotroot | Command line only. |
subdir | Client options file (dsm.opt) or command line. |
subdir | Client user-options file (dsm.opt) or command line. |
tapeprompt |
Client options file (dsm.opt) or command line. |
tapeprompt | Client user-options file (dsm.opt) or command line. |
Incremental
Incremental -absolute
Incremental
Incremental -absolute
incremental c: d: e:
i \home\ngai\
Incremental /home /usr /proj
Incremental /proj/test/
Incremental -incrbydate /home
Incremental -subdir=yes /fs/dir1/abc
Incremental /fs/dir1
Incremental -subdir=yes /fs/dir1/
dsmc inc /usr -snapshotroot=/snapshot/day1
dsmc inc c: -snapshotroot=\\florence\c$\snapshots\snapshot.0
incremental /home -snapdiff -diffsnapshot=create
incremental /proj -snapdiff -diffsnapshot=latest
incremental -snapdiff H:
incremental -snapdiff H: -diffsnapshot=LATEST