Users Guide

l "Blink and Unblink (Physical Disk)"
l "Remove Dead Segments"
l "Assign and Unassign Global Hot Spare"
l "Prepare to Remove"
l "Online and Offline"
l "Initialize"
l "Rebuild"
l "Cancel Rebuild"
l "Clear Physical Disk and Cancel Clear"
l "Revertible Hot Spare"
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Blink and Unblink (Physical Disk)
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Does my controller support this feature? See "Supported Features."
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The Blink task allows you to find a disk within an enclosure by blinking one of the light-emitting diodes (LEDs) on the disk. You may want to use this task to
locate a failed disk.
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On most controllers, the Blink task automatically cancels after a short duration such as 30 or 60 seconds. If you need to cancel the Blink task or if the physical
disk continues to blink indefinitely, use the Unblink task.
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Remove Dead Segments
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Does my controller support this feature? See "Supported Features."
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The Remove Dead Segments task recovers disk space that is currently unusable. A dead or orphaned disk segment refers to an area of a physical disk that is
unusable for any of the following reasons:
l The dead segment is an area of the physical disk that is damaged.
l The dead segment is included in a virtual disk, but the virtual disk is no longer using this area of the physical disk.
l The physical disk contains more than one virtual disk. In this case, disk space that is not included in one of the virtual disks may be unusable.
l The dead segment resides on a physical disk that has been disconnected from and then reconnected to the controller.
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Prepare to Remove
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Does my controller support this feature? See "Supported Features."
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Use the Prepare to Remove task to spin down a physical disk so that it can safely be removed from an enclosure or backplane. It is recommended that you
perform this task before removing a disk to prevent data loss.
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This task causes the lights on the disk to blink. You can safely remove the disk under the following conditions:
l Wait for about 30 seconds to allow the disk to spin down.
l Wait until you notice the initial blink pattern has changed into a different pattern or the lights have stopped blinking.
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NOTE: The Blink and Unblink tasks are only supported for hotswap physical disks (disks that reside in a carrier). When using an Ultra SCSI, Ultra2 SCSI,
Ultra160 SCSI, LSI 1020, LSI 1030, or LSI PCI-e U320 controller, the Blink and Unblink tasks apply to physical disks contained in carriers that can be
inserted into a server or an enclosure. If the physical disk is not contained in a carrier but is instead designed to be connected with a SCSI cable
(typically a ribbon cable), then the Blink and Unblink tasks are disabled.