126 Configuration: Disk Groups and Virtual Disks

Erasing Secure Physical Disks

In the AMW, when you select a security enabled physical disk that is not part
of a disk group, the Secure Erase menu item is enabled on the Physical Disk
menu. 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 on
the physical disk and reset the physical disk security attributes.
CAUTION: Possible loss of data access—The Secure Erase option removes all of
the 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 you
have selected is the correct physical disk. You cannot recover any of the data
that is currently on the physical disk.
After you complete the secure erase procedure, the physical disk is available
for use in another disk group or in another storage array. Refer to the
PowerVault Modular Disk Storage Manager online help topics for more
information on the secure erase procedure.
Configuring Hot Spare Physical Disks
Guidelines to configure host spare physical disks:
• You can use only unassigned physical disks with Optimal status as hot
spare physical disks.
• You can unassign only hot spare physical disks with Optimal, or Standby
status. You cannot unassign a hot spare physical disk that has the In Use
status. A hot spare physical disk has the In Use status when it is in the
process of taking over for a failed physical disk.
• If a hot spare physical disk does not have Optimal status, follow the
Recovery Guru procedures displayed by the MDSM application to correct
any problem before trying to unassign the physical disk.
• Hot spare physical disks must be of the same media type and interface type
as the physical disks that they are protecting.
• If there are secure disk groups and security capable disk groups in the
storage array, the hot spare physical disk must match the security
capability of the disk group.
• Hot spare physical disks must have capacities equal to or larger than the
used capacity on the physical disks that they are protecting.
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