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NetBackup System Administrator’s Guide - Windows NT Server
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If you add a file list entry as part of an existing stream, its first backup will be
according to the next schedule that is due for the class. If the next backup due
is an incremental, then only changed files are backed up. To ensure that a new
entry gets a full backup the first time, add it to a new stream. NetBackup
performs a full backup of new streams that are added to the file list.
In the previous example, assume you add
D:\Utilities
after
D:\Datafiles
. If an incremental is due that evening, only changed files in
D:\Utilities
are backed up. However, if you add a
NEW_STREAM
directive
before
D:\Utilities
, then NetBackup performs a full backup of the stream
and therefore
D:\Utilities
, regardless of when the files were last changed.
Auto-discover Streaming Mode
Auto-discover streaming mode is invoked if
NEW_STREAM
is not on the first
line of the file list and the list contains either the
ALL_LOCAL_DRIVES
directive
or wild cards. In this mode, the file list is sent to the client, which preprocesses
the list and splits the backup into streams as follows:
• If wild cards are used, the expansion of the wild cards results in one stream
per wild card expansion.
• If the file list contains the
ALL_LOCAL_DRIVES
directive, NetBackup backs
up the entire client but splits each drive volume (Windows NT) or file
system (UNIX) into its own backup stream (see “ALL_LOCAL_DRIVES” on
page 99).
If the file list does not contain either wildcards or the
ALL_LOCAL_DRIVES
directive, each file path in the file list becomes a separate stream. In this case,
auto-discover mode is not used and preprocessing is done on the server rather
than the client.
Auto-discover streaming mode applies to:
• Standard and MS-Windows-NT class types, except for Macintosh and
NetWare clients.
• Clients that are running NetBackup 3.2 or later.
With auto discovery, the client determines how many streams are required by
preprocessing the file list before the backup begins. The first backup of the
class always includes preprocessing. However, preprocessing does not
necessarily occur before every backup and whether it occurs depends on the
preprocess interval.
NetBackup 3.2 System Administrator's Guide for Windows NT
NetBackup 3.2 System Administrator's Guide for Windows NT
