Administrator Guide

Variable Name Description Default
d specifies that node/dir format file history will be generated.
f specifies that file-based file history will be generated.
y specifies that the default file history type (which is the node/dir format) will be
generated.
n specifies that no file history will be generated.
DIRECT Specifies whether the restore is a Direct Access Retrieval. Valid values are Y and
N.
Y
UPDATE Specifies whether the dump level and dump time for a backup operation should
be updated on the NDMP server so that subsequent backups can reference the
dump level from previous backups. Valid values Y and N.
Y
EXCLUDE Specifies a pattern for file or directory names that are not to be backed up. The
pattern is a comma-separated list of file or directory names, up to 32. Each name
will be used to match to nodes encountered during backup. A name can contain
an asterisk (*)as the wildcard character. The comma (,) or backslash
(\ )characters in a name should be escaped with a backslash.
No default
RECURSIVE Specifies whether the restore should be recursive or not. Valid values are Y and
N. If this variable is set to N, only the files that are the immediate children of the
restore target are restored.
Y
RESTORE_OVERWRITE Specifies whether the restore operation should overwrite existing files with the
backup data. Valid values are Y and N.
Y
LISTED_INCREMENTAL Controls behavior similar to the listed incremental option of the tar
application. This variable specifies whether an additional directory listing is added
to the backup stream during incremental backup so that the recovery operation
can handle files and directories deleted between the incremental backups.
During backup, if this variable is set, an additional directory listing is added to the
backup data stream. Because of the additional process required, this addition
could affect the backup data stream size and performance.
During recovery, if this variable is set and if the backup data stream was
generated with this variable turned on, the NDMP server handles deleting files
and directories that are deleted between incremental backups.
Setting this variable requires additional processing time and enlarges the backup
data stream size (how much it changes depends on the number of elements in
the backup data set). If this feature is not important to the end user, it should
not be set.
N
BASE_DATE Used by TSM for token-based backup, as an alternative to using the LEVEL
environment variable.
When BASE_DATE is set to 00, a full backup is performed.
After a full backup completes, a token can be retrieved by retrieving the
DUMP_DATE environment variable. This token can then be passed in later
backups as the value of BASE_DATE. The backup performed in this case is an
incremental backup relative to the time when the token was generated.
When BASE_DATE is set to -1, token-based backup is disabled.
-1
DEREF_HARD_LINK Controls whether hard link files data content are backed up for all instances of
the same file. Valid values are Y and N.
N
Incremental Backups
Each time a backup is performed, the NDMP server stores the timestamp for the backup. When the NDMP server performs an
incremental backup, it uses the timestamp stored for the previous full or incremental backup to determine if a directory or file needs to be
included.
FluidFS Administration
415