When a state database replica is placed on a slice that becomes part of a metadevice, the capacity of the metadevice is reduced by the space occupied by the replica(s). The space used by a replica is rounded up to the next cylinder boundary and this space is skipped by the metadevice. However, the default size of a state database replicas is only 1034 blocks, and combining replicas and metadevices in this way is actually a very efficient use of DiskSuite.