The following list explains limitations of hardware during a save storage procedure:
- If the tape unit supports hardware data compression, then tape unit uses hardware data compression. If the tape unit does not support device data compression, then you may use programming data compression. Generally if the tape unit device operates faster than possible for data compression, the tape unit writes data without compression to the device.
- The server only uses one tape unit.
- The save storage process does not start unless all of the configured disk units are operating.
- The server cannot use some tape units as an alternate IPL device. In these cases, you cannot use these tape units to restore the Licensed Internal Code and the Licensed Internal Code PTFs from the save storage tape.
- The disk configuration of the restoring server must be the same as the disk configuration of the saving server. The disk types and models must be the same or equivalent with some additional devices. Serial numbers and physical addresses do not have to be the same. All disk units that were saved are required for the restore operation.
A virtual tape device cannot be used.