This article is for Amanda Enterprise (AE)
- If there is a firewall on the Amanda Server, a rule should be added to trust each NDMP device being backed up.
- NDMP service must be enabled on the NDMP appliance
- NDMP License must be part of the /etc/zmanda/zmanda_license file
Configuring NDMP volumes/directories for Backup
We recommend the creation of separate backup sets for NDMP backup.
Add NDMP entries to the backup set using Backup | What:
Select NDMP from Filesystem:
Filer Host Name: IP of NDMP Filer
Volume Name: Name of NDMP volume
Directory: Directory of NDMP volume being backed up
Vendor: NDMP vendor
Username: Username for NDMP filer with NDMP backup and restore permissions
Password: Password to match above username
Auth Type: Type of authentication used to connect to NDMP appliance
DirectTCP – Backups are sent from appliance direct to changer, both accessible by the NDMP Filer
Amanda – Allows user to backup to media accessible from the Amanda Server
Compression & Encryption: Only allowed if using Amanda Data Path
For Direct NDMP and 3-Way NDMP configurations, no backup device is required to be setup.
For Remote NDMP configurations a Disk, Tape, or Cloud device is required.
In /etc/amanda/ <backup set> (where <backup set> is replaced by the actual name of your backup set), verify there is a file ndmp_filer_shares. If there is not, create the file with the following content:
"IP of Filer" "/vol/backupvol" "root" "root_password" md5 Note: "/vol/backupvol" can be substituted with "/vol/restorevol" or a wildcard (*) can be used to include all.
Replace Ã¢â‚¬Å“IP of FilerÃ¢â‚¬ï¿½ and Ã¢â‚¬Å“/vol/backupvolÃ¢â‚¬ï¿½ with the filerÃ¢â‚¬â„¢s IP address and the path to the backup volume, respectively.
This file will need to be readable only by the amandabackup user, which can be done with the following command:
chown amandabackup /etc/amanda/ <backup set>/ndmp_filer_shares chmod 600 /etc/amanda/ <backup set>/ndmp_filer_shares
Improving Backup Performance
- Netapp filers support up to 16 backup and restore operations at a time. This means we can split the backup into multiple sets and do them in parallel.
- 3-Way NDMP works well for this as the Amanda Server does not create a bottleneck.
- NDMP jobs have the lowest priority compared to all other tasks on Netapp Filers. Schedule jobs at a time where the filer is not in use or under heavy load.
- Check whether DAR is disabled on the filer. If DAR is enabled this will greatly impact backup performance.
- Faulty disks on the Filer that are part of the backup can greatly impact the performance as well.