Configuration: Disk Groups and Virtual Disks 111You must supply the security key from a security key file that was saved on theoriginal storage array. You must provide the pass phrase that was used toencrypt the security key file to extract the security key from this file.For more information, see the PowerVault Modular Disk Storage Manageronline help topics.Erasing 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. Refer to thePowerVault Modular Disk Storage Manager online help topics for moreinformation on the secure erase procedure.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.
