IBM System Storage Nxxxx
This information is provided to help you use NetBackup for NDMP with an IBM System Storage Nxxxx filer.
For further details, refer to the following documentation:
Data ONTAP Command Reference Guide
Data ONTAP System Administrator's Guide
Tips for robotic devices
To display the robot device file, sign on to the IBM Nxxxx host and enter the following command:
sysconfig -m
The device names in the output are in the format mcN, where N is 0 or higher.
Example sysconfig output:
Medium changer (6a.4) HP C6280-7000 mc0 - medium changer device
Tips for tape drives
To display tape device files, sign on to the IBM Nxxxx host and enter the following command:
sysconfig -t
Always use the drive names that begin with
nr(such asnrst0a) because these are the non-rewinding devices.Example sysconfig output:
Tape drive (6a.5) Quantum DLT7000 rst0l - rewind device, format is: 81633 bpi 40 GB (w/comp) nrst0l - no rewind device, format is: 81633 bpi 40 GB (w/comp) urst0l - unload/reload device, format is: 81633 bpi 40 GB (w/comp) rst0m - rewind device, format is: 85937 bpi 35 GB nrst0m - no rewind device, format is: 85937 bpi 35 GB urst0m - unload/reload device, format is: 85937 bpi 35 GB rst0h - rewind device, format is: 85937 bpi 50 GB (w/comp) nrst0h - no rewind device, format is: 85937 bpi 50 GB (w/comp) urst0h - unload/reload device, format is: 85937 bpi 50 GB (w/comp) rst0a - rewind device, format is: 85937 bpi 70 GB (w/comp) nrst0a - no rewind device, format is: 85937 bpi 70 GB (w/comp) urst0a - unload/reload device, format is: 85937 bpi 70 GB (w/comp)
The logs on the IBM Nxxxx filer must be viewed through an NFS or CIFS mount point. On the IBM filer, general messages appear in /etc/messages.
The NDMP service is controlled by the Data ONTAP administrative interface or the following commands:
ndmpd on(Starts the NDMP service.)
ndmpd off(Stops the NDMP service.)
ndmpd status(Displays the status of the NDMP service including any active NDMP sessions.)
ndmpd probe session-number(Displays details about the specified session.)
By default, the NDMP service is not started at boot time. To start it, add the following line to the end of the
/etc/rcfile on the IBM system:ndmpd on
To determine the number of objects in a volume, enter the following command:
maxfiles
Known restrictions
The user name used with the tpconfig command must be defined as root for each data mover.
If you eject a tape from an IBM Nxxxx-attached drive and then try to open the device, it will reload the tape. This happens when the device is still UP and the NetBackup automatic-volume-recognition daemon (avrd) polls it.