Veritas NetBackup™ for NDMP Administrator's Guide
- Introduction to NetBackup for NDMP
- About NetBackup for NDMP
- Types of NDMP backup
- About assigning tape drives to different hosts
- Installation Notes for NetBackup for NDMP
- Configuring NDMP backup to NDMP-attached devices
- About Media and Device Management configuration
- About creating an NDMP policy
- Backup selection options for an NDMP policy
- About enabling or disabling DAR
- Configuring NDMP backup to NetBackup media servers (remote NDMP)
- Configuring NDMP DirectCopy
- About NDMP DirectCopy
- Using NDMP DirectCopy to duplicate a backup image
- Accelerator for NDMP
- Remote NDMP and disk devices
- Using the Shared Storage Option (SSO)
- Backup and restore procedures
- About NetBackup for NDMP logs
- NetBackup for NDMP troubleshooting suggestions
- About robot tests
- Using NetBackup for NDMP scripts
NDMP three-way backup
If you use the NDMP three-way backup, the NetBackup for NDMP server initiates the backup. Data travels over the network by going from an NDMP host to a storage device that is attached to another NDMP host on the local network or is available on a SAN.
The following figure shows an example of an NDMP three-way backup and restore.
In an IPv4 environment, if you attempt an NDMP three-way backup using NAS filers that are configured to use IPv6, the backup fails with the error, too many datablocks. The error occurs when you run the backup to a tape drive that is attached to a NAS filer that is configured for IPv6.
To avoid this issue, add the entry: NDMP_IPV6_DISABLE in the /db/config/ndmp.cfg file to tell NetBackup that IPv6 is not to be used.