Backup Media
On the AS/400, you have a choice of several kinds of devices for your backup:
Tapes
Files (SAVEF)
Virtual Tapes
Optical Drives
Virtual Optical Drives
As our main goal is to copy backup media over the network using NFS or FTP, you will have to choose between Files and Virtual Tapes. Both can be copied onto any platform, however, as you can save multiple libraries to a Virtual Tape using one save command, but only one library to a Save File per save command.
Command |
Virtual Tape |
Save File |
|---|---|---|
SAVSYS |
Yes |
No |
SAVCFG |
Yes |
Yes |
SAVSECDTA |
Yes |
Yes |
SAVLIB |
Yes |
Yes |
SAVOBJ |
Yes |
Yes |
SAVCHGOBJ |
Yes |
Yes |
SAVDLO |
Yes |
Yes |
SAVSAVFDTA |
Yes |
No |
SAVLICPGM |
Yes |
Yes |
SAVSTG |
No |
No |
SAV |
Yes |
Yes |
RUNBCKUP |
Yes |
No |
SAVSYSINF |
Yes |
Yes |
The above table shows that you cannot use Save Files files with all SAVE commands. Given these limitations on File type, We advise you to use Virtual Tapes (Available since v5r4).
http://publib.boulder.ibm.com/infocenter/iseries/v5r4/index.jsp?topic=%2Frzaiu%2Frzaiuintro.htm
When a backup to a virtual tape volume is complete, you can duplicate the data to physical media at any time and not interfere with system operations.
Virtual tape is beneficial for unattended saves because it eliminates media errors that could halt an unattended save. If you do not allocate sufficient space in the virtual volumes within the image catalog to save the intended information, the virtual tape will use the auto-generate feature to create additional virtual tape volumes.
See also
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