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The following table offers a guide for selecting a volume prefix to use:
Prefix length | Maximum Number of Systems in BRMS Network | Maximum Number of Volumes per System |
1 | 36 |
32767 | ||
2 | 1296 | 10000 |
3 | 46656 | 1000 |
Backups will loop to find an open volume index before failing with message BRM148A to indicate that no media is available when the maximum number of volumes for the prefix length is reached.