Use the following information as a guide for how to use the backup and restore methods to migrate data.
In some cases, the only method that is available to transfer data is to back it up to tape and then restore it to the new disk. This method is slower because tape devices require that you move the data twice. However, if you are removing disks before you install the DS6000™, the only way to move the data is with a tape device.
You can find a number of different archive utilities on UNIX systems. The cpio command can also create and read archives on tape devices. Use the -o (output) option to create archives, and use the -i (input) option to read and extract data from archives.
AIX provides a pair of commands: backup and restore. The backup command has two different methods of creating archives, either by file name or by the i-node. Use the restore command to read any archive that is created by the backup command. Solaris and HP-UX provide the dump and restore commands, which backup and restore data by the i-node.
The tar command is available on all UNIX systems that support the DS6000 and is another way to create and extract tape archives. Use the c option to create archives. Use the x option to extract files from archives.