When changing cluster assignments or hash bucket sizes, ample disk space must be available on all AMPs. If sufficient space is not available, Teradata Database stops. To recover, reinitialize Teradata Database using the sysinit utility. Note that reinitializing the system destroys all data, which would need to be restored from an archive backup.
Before you start a reconfiguration that involves a change of clusters, currentperm space should be less than 53% of the total maxperm space (that is, at least 47% of system maxperm must be available).