Is it possible for one iSeries system (machine 2) to be restoring at the same time from the same media as a backup is being created on the first (machine 1)?
No, it's not possible. However, once a backup has completed on the first system (machine 1), the second system (machine 2) can restore from the media created on the first system (machine 1). If both systems can access a single tape drive, when the save completes using SAVOBJ or SAVLIB, the second system can restore using RSTOBJ or RSTLIB. If you're using save files *SAVF, the file would need to be physically moved from one system to the other using tape, DDM or FTP. The second system (machine 2) could then restore the data.
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