User's Manual

Does my controller support this feature? See Supported Features.
Use the Cancel Rebuild task to cancel a rebuild that is in progress. If you cancel a rebuild, the virtual disk remains in a degraded state. The failure of an
additional physical disk can cause the virtual disk to fail and may result in data loss. It is recommended that you rebuild the failed physical disk as soon as
possible.
Assign and Unassign Global Hot Spare
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Does my controller support this feature? See Supported Features.
A global hot spare is an unused backup disk that is part of the disk group. Hot spares remain in standby mode. When a physical disk that is used in a virtual
disk fails, the assigned hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention. When a hot
spare is activated, it rebuilds the data for all redundant virtual disks that were using the failed physical disk.
You can change the hot spare assignment by unassigning a disk and choosing another disk as needed. You can also assign more than one physical disk as a
global hot spare.
Global hot spares must be assigned and unassigned manually. They are not assigned to specific virtual disks. If you want to assign a hot spare to a virtual
disk (it replaces any physical disk that fails in the virtual disk) then use the Assign and Unassign Dedicated Hot Spare.
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You should be familiar with the size requirements and other considerations associated with hot spares. For more information, see the following:
l Protecting Your Virtual Disk with a Hot Spare
l Considerations for Hot Spares on PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, 4e/Di, PERC 5/E, PERC 5/i, PERC 6/E, PERC 6/I, and CERC 6/I Controllers
l Considerations for Hot Spares on CERC SATA1.5/6ch, S100, and S300 Controllers
l Global Hot Spare Considerations on a SAS 6/iR
Online and Offline
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Does my controller support this feature? See Supported Features.
The Online and Offline tasks only apply to physical disks that are included in a redundant virtual disk and attached to a PERC 4/SC, 4/DC, 4e/Si, 4e/Di, 4e/DC,
or 4/Di controller.
Use the Offline task to deactivate a disk before removing it. Use the Online task to reactivate an offline disk. In some cases, you may want to use the Online
task on a failed disk in an attempt to recover data from the disk. For more information, see Using the Physical Disk Online Command on Select Controllers.
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To online or offline the physical disk:
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1. Review the physical disk that must be made online or offline. When making a physical disk offline, be aware that there can be data loss. Back up your
data, if necessary. If you want to blink the physical disk, click the Blink button.
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2. Click Online or Offline when ready or click Go Back to Previous Page.
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To locate this task in Storage Management:
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NOTE: If you cancel the rebuild of a physical disk that is assigned as a hot spare, you must reinitiate the rebuild on the same physical disk in order to
restore the data. Canceling the rebuild of a physical disk and then assigning another physical disk as a hot spare does not cause the newly assigned
hot spare to rebuild the data. You must reinitiate the rebuild on the physical disk that was the original hot spare.
NOTE: On SAS 6/iR controllers, you cannot assign physical disks that have boot partitions, as hot spares.
NOTE: On PERC S100 and S300 controllers, if there is free space available on the global hot spare, it continues to function as a spare even after
replacing a failed physical disk. See Considerations for Hot Spares on CERC SATA1.5/6ch, S100, and S300 Controllers.
NOTE: When deleting virtual disks, all assigned global hot spares may be automatically unassigned when the last virtual disk associated with the
controller is deleted.
NOTE: For PERC H700 and PERC H800 controllers, if any of the drives you selected is in the spun down state, the following message is displayed: The
current physical drive is in the spun down state. Executing this task on this drive takes additional time, because the drive needs to spun up.
CAUTION: The SAS 6/iR controller enables you to assign two physical disks as global hot spare. Assigning a physical disk as a global hot spare on
a SAS 6/iR controller is likely to cause data loss from the physical disk. If the system or boot partition resides on the physical disks, it may be
destroyed. You should only assign physical disks that do not contain critical data. For more information about global hot spares and the SAS 6/iR,
see Global Hot Spare Considerations on a SAS 6/iR.
NOTE: The Online and Offline tasks are not supported on the PERC 4/IM controller or the CERC SATA1.5/6ch, and CERC SATA1.5/2s controllers.