Veritas NetBackup™ for NDMP Administrator's Guide
- Introduction to NetBackup for NDMP
- About NetBackup for NDMP
- About Network Data Management Protocol (NDMP)
- Types of NDMP backup
- About NDMP policies in NetBackup
- About NetBackup storage units
- About assigning tape drives to different hosts
- About the NDMP backup process
- About the NDMP restore process
- About Direct Access Recovery (DAR)
- Snapshot Client assistance
- About NDMP multiplexing
- About NDMP support for Replication Director
- Limitations of Replication Director with NDMP
- About NDMP support for NetApp clustered Data ONTAP (cDOT)
- Installation Notes for NetBackup for NDMP
- Configuring NDMP backup to NDMP-attached devices
- About configuring NDMP-attached devices
- Authorizing NetBackup access to a NAS (NDMP) host
- About access for three-way backups and remote NDMP
- About Media and Device Management configuration
- Using the Device Configuration Wizard to configure an NDMP filer
- About adding volumes
- About verifying NDMP password and robot connection
- Adding NDMP storage units
- About creating an NDMP policy
- Attributes tab options for an NDMP policy
- Schedules tab options for an NDMP policy with Accelerator for NDMP enabled
- Clients tab options for an NDMP policy
- Backup selection options for an NDMP policy
- About environment variables in the backup selections list
- About appropriate host selection for NetApp cDOT backup policies
- About backup types in a schedule for an NDMP policy
- About enabling or disabling DAR
- Configuring NetBackup for NDMP in a clustered environment
- Configuring NDMP backup to NetBackup media servers (remote NDMP)
- Configuring NDMP DirectCopy
- Accelerator for NDMP
- Remote NDMP and disk devices
- Using the Shared Storage Option (SSO)
- Backup and restore procedures
- Troubleshooting
- Using NetBackup for NDMP scripts
- About the NetBackup for NDMP scripts
- ndmp_start_notify script (UNIX)
- ndmp_start_notify.cmd script (Microsoft Windows)
- ndmp_end_notify script (UNIX)
- ndmp_end_notify.cmd script (Microsoft Windows)
- ndmp_start_path_notify script (UNIX)
- ndmp_start_path_notify.cmd script (Microsoft Windows)
- ndmp_end_path_notify script (UNIX)
- ndmp_end_path_notify.cmd script (Microsoft Windows)
- ndmp_moving_path_notify script (UNIX)
- ndmp_moving_path_notify.cmd script (Microsoft Windows)
About enabling or disabling DAR
By default, NetBackup for NDMP is configured to use Direct Access Recovery (DAR) to restore files or directories. DAR is used somewhat differently for file restore than for directory restore.
The following table describes how DAR is used for file and directory restores.
Table: How DAR is used for file and directory restores
Type of restore | Description |
|---|---|
File restore | For each restore of files (not of directories), NetBackup automatically determines if the use of DAR speeds up the restore. NetBackup uses DAR only when it results in a faster restore. |
Directory restore | For restore of directories, by default DAR is always used to restore a subdirectory but never used to restore the directory containing an entire image. For example, if /vol/vol0 contains the entire image, and /vol/vol0/dir1 is a subdirectory, DAR is used by default to restore /vol/vol0/dir1. But it is not used to restore /vol/vol0. For restore of subdirectories, NetBackup does not attempt to gauge the effectiveness of using DAR. Unless DAR is manually disabled, NetBackup always uses DAR to restore subdirectories. |
Note:
You may have to disable DAR if you have problems with DAR and your NDMP host is an older computer or is not running the latest NAS OS version.