Legato Networker ClientPak and Storage Node User's Guide

Chapter 3: Recovering Files

Recovering Volume Sets

Only system administrators should recover volume sets.

You can perform three types of recoveries of MPE volume sets:

1. Non-interactive recovery of the directory accounting information file (DAF) for an

MPE volume set. A directory accounting information file contains the group and

account information for the MPE volume set and any other file or directory on that

volume set.

2. Interactive-browse recovery of the directory accounting information file, and of

any file or directory on a volume set.

3. Save set-based recovery of an entire MPE volume set.

Note that you can recover an entire MPE volume set interactively, but we recommend

that you use the save set-based recovery method to recover an entire MPE volume set.

Important: Performing a full restoration of a system volume save set is not advised

because you could overwrite crucial files.

The NSRRECOV program for recovering MPE volume sets includes the special

directory accounting information file that allows you to rebuild the accounts and

groups of the volume set.

For information on recovering an entire MPE volume set in case of a disaster, see

“Disaster Recovery: Restoring an Entire MPE Volume Set” on page 43.

Browsing MPE Volume Sets for Recovery

You can browse files, directories, MPE/iX accounts, and groups derived from either

client-initiated backups or server-initiated backups of volume sets. If you are unable to

browse, it might be because the system administrator turned the browse feature off.

Important: Purged MPE/iX accounts and groups will be restored with only the default

attributes, which includes permissions.

Naming Conventions for Recovering MPE Volume Sets

MPE supports two types of volume sets: system volume sets and non-system volume

sets. MPE systems are shipped with a single preconfigured system volume set called

MPEXL_SYSTEM_VOLUME_SET. You can add as many non-system volume sets as

you need.

The naming conventions for each type of volume set are different:

• For both system and non-system volume sets, add a slash (/) before the volume

set name, for example: /MPEXL_SYSTEM_VOLUME_SET.

• For an MPE non-system volume set, append the tag _VOLUME_SET to the end of

the volume set name. For example, if you are backing up or recovering all project

files that reside exclusively on an MPE volume set, PROJECTS, name the volume

set /PROJECTS_VOLUME_SET.