Patent ID: 8539184

Claim:
A computer program product to dynamically adjust the amount of free space in a storage group, the computer program product comprising a non-transitory computer-readable medium having computer-usable program code embodied therein, the computer-usable program code comprising: computer-usable program code to monitor the amount of free space in an active storage group; computer-usable program code to maintain an overflow storage group comprising unused volumes; computer-usable program code to automatically move a volume from the overflow storage group to the active storage group when the free space in the active storage group falls below a lower threshold value; and computer-usable program code to automatically perform the following steps when the free space in the active storage group exceeds an upper threshold value: (1) transfer data from a volume in the active storage group to at least one other volume in the active storage group; and (2) move the volume from the active storage group to the overflow storage group.