Difference in usable capacity detected between storage nodes with the same hardware configuration ,this can be noticed from SANtricity UI or from the disk pool summary in support logs : bad-disk-pool ...Difference in usable capacity detected between storage nodes with the same hardware configuration ,this can be noticed from SANtricity UI or from the disk pool summary in support logs : bad-disk-pool Optimal 312.851 TB 312.851 TB (100%) 0.000 MB 21.437 TB(3 Drives) SAS, Hard Disk Drive 18 No Yes Name Status Usable Capacity Used Capacity Free Capacity Preservation Capacity Drive/Media Type Volumes Secure Capable DA Capable