NSR_CRASH(8)                Legato NetWorker 3.0                NSR_CRASH(8)


NAME
       NSR crash - How to recover from a disaster with NetWorker

DESCRIPTION
       NetWorker can be used to recover from all types of system and hard­
       ware failure that result in loss of files.

       When a NetWorker client has lost files, the recover command can be
       used to browse, select, and recover individual files, selected direc­
       tories, or whole filesystems.  If the networker recover command is
       lost or damaged it will have to be copied either from another Net­
       Worker client or from the NetWorker distribution tape.

       When recovering a large number of files onto a filesystem that was
       only partially damaged, you may not want to overwrite existing ver­
       sions of files.  To do this, wait until recover asks for user input
       to decide how to handle recovering an existing file.  You can then
       answer N meaning ``always no'' to cause recover to avoid overwriting
       any existing files, or n if you want to protect this file but you
       want recover to ask again on other files.

       If you do want to replace the existing version of a file or set of
       files with the saved versions use the add command in recover to
       select which files should be retrieved, and answer Y or y when it
       asks if it should overwrite existing files.

       For more information on using the recover command see the recover(8)
       manual page.

       If the NetWorker server daemons or commands are lost it may be neces­
       sary to reinstall the server from the NetWorker distribution tape.
       Once the NetWorker server is installed and the daemons are running,
       other NetWorker server files can be recovered using the recover com­
       mand.  When reinstalling NetWorker you must be sure to install the
       /nsr directory in exactly the same place as it was originally
       installed.  The machine use to recover files may be different that
       the one used to save the files, but it must have the same hostname as
       the original machine.  This is important because recovery of the Net­
       Worker on-line index requires that the index files have the same
       pathname, which includes the server's hostname, as they did at the
       time of the latest save.

       In the event that the NetWorker server's index is lost, it will be
       necessary to first recover the index from tape before the recover
       command can be used to browse and recover other files.  To recover
       the NetWorker server's index use the recoverindex command.  The
       recoverindex command quickly recovers the lost on-line index for a
       NetWorker server by locating the Bootstrap saveset produced by the
       savegroup(8) command at the end of an automatic save. The Bootstrap
       saveset tells recoverindex which saveset to extract from which vol­
       umes to recover the whole index.  The saveset identifier and other
       information about the Bootstrap saveset is printed by savegroup at
       the end of each automatic save.  See the saveindex(8) and save­
       group(8) manual pages for more details.



Licensed material--property of copyright holder(s)                         1

NSR_CRASH(8)                Legato NetWorker 3.0                NSR_CRASH(8)


       If you want to recover whole filesystems an alternative to using
       recoverindex and recover is to use the scanner command to recover all
       of the files in a particular saveset.  The scanner command can also
       be used to print a table of contents for a volume to help you locate
       the correct saveset for a filesystem.  You should only use scanner
       for recovery of a filesystem when you can locate a recent saveset for
       that filesystem which was saved with level=full.  See the scanner(8)
       manual page for more details.

       If the server is damaged so badly that it will not run at all you
       will need to follow the manufacturer's instructions for reinstalling
       and rebooting a multiuser system. Once you have the system up and
       running in multiuser mode you can reinstall NetWorker and use recov­
       erindex to rebuild the on-line index. Finally, you will want to
       recover files which previously existed on the machine, but which do
       not exist on the manufacturer's distribution tape.  This may include:
       system files which had been customized, a specially tailored kernel,
       new special device entries, locally developed software, and user's
       personal files.


SEE ALSO
       nsrize(8), nsrlayout(5), nsr(8), recover(8), savegroup(8).
       saveindex(8).  scanner(8).

































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