User's Manual

Physical Disks or Physical Devices 209
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.
NOTE: The Blink and Unblink tasks are only supported for hotswap physical disks
(disks that reside in a carrier). When using an 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.
Remove Dead Segments
Does my controller support this feature? See Supported Features .
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
or physical device that is unusable for any of the following reasons:
• The dead segment is an area of the physical disk or physical device that is
damaged.
• The dead segment is included in a virtual disk, but the virtual disk is no
longer using this area of the physical disk or physical device.
• The physical disk or physical device contains more than one virtual disk. In
this case, disk space that is not included in one of the virtual disks may be
unusable.
• The dead segment resides on a physical disk or physical device that has
been disconnected from and then reconnected to the controller.
Prepare to Remove
Does my controller support this feature? See Supported Features .
Use the Prepare to Remove task to spin down a physical disk or physical
device so that it can safely be removed from an enclosure or backplane. It is
recommended that you perform this task before removing a disk or device to
prevent data loss.