130 Configuration: Disk Groups and Virtual DisksErasing Secure Physical DisksIn the AMW, when you select a security enabled physical disk that is not partof a disk group, the Secure Erase menu item is enabled on the Physical Diskmenu. You can use the secure erase procedure to re-provision a physical disk.You can use the Secure Erase option if you want to remove all of the data onthe physical disk and reset the physical disk security attributes.CAUTION: Possible loss of data access—The Secure Erase option removes all ofthe data that is currently on the physical disk. This action cannot be undone.Before you complete this option, make sure that the physical disk that youhave selected is the correct physical disk. You cannot recover any of the datathat is currently on the physical disk.After you complete the secure erase procedure, the physical disk is availablefor use in another disk group or in another storage array. For more informationon the secure erase procedure, see the PowerVault Modular Disk StorageManager online help topics.Configuring Hot Spare Physical DisksGuidelines to configure host spare physical disks:• You can use only unassigned physical disks with Optimal status as hotspare physical disks.• You can unassign only hot spare physical disks with Optimal, or Standbystatus. You cannot unassign a hot spare physical disk that has the In Usestatus. A hot spare physical disk has the In Use status when it is in theprocess of taking over for a failed physical disk.• If a hot spare physical disk does not have Optimal status, follow theRecovery Guru procedures displayed by the MDSM application to correctany problem before trying to unassign the physical disk.• Hot spare physical disks must be of the same media type and interface typeas the physical disks that they are protecting.• If there are secure disk groups and security capable disk groups in thestorage array, the hot spare physical disk must match the securitycapability of the disk group.• Hot spare physical disks must have capacities equal to or larger than theused capacity on the physical disks that they are protecting.
