You can move data using the MOVE DATA command. Before moving data, however, take steps to ensure that the move operation succeeds.
Before you begin
- If you want to ensure that no new files are written to a volume
after you move data from it, change the volume's access mode to read-only. This
prevents the server from filling the volume with data again as soon
as data is moved. You might want to do this if you want to delete
the volume.
See Updating storage pool volumes for information about updating the access mode of a storage pool volume.
- Ensure that sufficient space is available on volumes within the
specified destination storage pool by:
- Querying the source storage volume to determine how much space is required on other volumes. See Monitoring the use of storage pool volumes for information about requesting information about a storage volume.
- Querying the specified destination storage pool to ensure that there is sufficient capacity to store the files that are being moved. See Monitoring space available in a storage pool for information about querying a storage pool.
If you need more storage space, define volumes or increase the maximum number of scratch volumes in the specified destination storage pool. See Defining storage pool volumes for preparing volumes to be used for server storage.
- If you are moving files from a volume in a sequential storage
pool to another volume in the same storage pool, ensure that the mount
limit of the device class associated with the storage pool is greater
than one. For information about the mount limit value for the device class, see:
- If you are moving files from a tape volume to a tape storage pool, ensure that the two tape drives that are required are available.
Procedure
To move data, issue the MOVE DATA command. 
For example, to move the files
that are stored in the /dev/vol3 volume to any
available volume in the STGTMP1 storage pool, enter:
When you move data from a volume,
the server starts a background process and sends informational messages,
such as:
For example, to
move the files that are stored in the d:\storage\vol3 volume
to any available volume in the STGTMP1 storage pool,
enter:
When you move data from a volume, the server starts
a background process and sends informational messages, such as:
For example, to move the files
that are stored in the /dev/vol3 volume to any
available volume in the STGTMP1 storage pool, enter:move data /dev/vol3 stgpool=stgtmp1ANR1140I Move Data process started for volume /dev/vol3
(process ID 32).move data d:\storage\vol3 stgpool=stgtmp1ANR1140I Move Data process started for volume D:\STORAGE\VOL3
(process ID 32).To run the MOVE DATA command in the foreground on an administrative client, issue the command with the WAIT=YES parameter.
Remember:
- A volume might not be totally empty after a move data operation completes. For example, the server might be unable to relocate one or more files to another volume because of input/output errors on the device or because errors were found in the file. You can delete the volume with DISCARDDATA=YES to delete the volume and any remaining files. The server then deletes the remaining files that had I/O or other errors.
- In addition to moving data from volumes in storage pools that have NATIVE or NONBLOCK data formats, you can also move data from volumes in storage pools that have NDMP data formats (NETAPPDUMP, CELERRADUMP, or NDMPDUMP). The target storage pool must have the same data format as the source storage pool. If you are moving data out of a storage pool for the purpose of upgrading to new tape technology, the target primary storage pool must be associated with a library that has the new device for the tape drives.
- If you run the MOVE DATA command on an offsite volume that contains collocated data, it might be necessary to issue the MOVE DATA command multiple times to move all of the data out of the volume. Each MOVE DATA command moves the data for a single collocation group.