APC 15000 RAID manual Disk STATUSCLEAR=tierchannel resets the channel error counts

Controller Management

Figure 3–9Disk Channel Screen

If the channel status is “acquiring loop synchronization,” this may indicate a channel problem. Refer to 4.2.2, "Recovering from Drive Failures" for recovery information.

Entering DISK INFO=<tier><channel> retrieves information about a specific disk (tier, channel).

DISK LIST displays a list of the disks installed in the system and indicates how many were found.

DISK SCAN checks each disk channel in the system for any new disks and verifies that the existing disks are in the correct location. DISK SCAN also starts a rebuild operation on any failed disks which pass the disk diagnostics.

DISK STATUS displays the loop status of each disk channel and a count of the SAS errors encountered on each channel (Figure 3–10).

15000 [1]: disk status
	Disk Channel Status
LUN	A B C D E F G H P S

--------------------------------------------------

InValDw:0	0	0	0	0	0	0	0	0	0	0
InValDw:1	0	0	0	0	0	0	0	0	0	0
InValDw:2	0	0	0	0	0	0	0	0	0	0
InValDw:3	0	0	0	0	0	0	0	0	0	0
LsDwSyn:0	0	0	0	0	0	0	0	0	0	0
LsDwSyn:1	0	0	0	0	0	0	0	0	0	0
LsDwSyn:2	0	0	0	0	0	0	0	0	0	0
LsDwSyn:3	0	0	0	0	0	0	0	0	0	0
PhyRst:0	0	0	0	0	0	0	0	0	0	0
PhyRst:1	0	0	0	0	0	0	0	0	0	0
PhyRst:2	0	0	0	0	0	0	0	0	0	0
PhyRst:3	0	0	0	0	0	0	0	0	0	0
RunDisp:0	0	0	0	0	0	0	0	0	0	0
RunDisp:1	0	0	0	0	0	0	0	0	0	0
RunDisp:2	0	0	0	0	0	0	0	0	0	0
RunDisp:3	0	0	0	0	0	0	0	0	0	0
Recovery	0	0	0	0	0	0	0	0	0	0

Figure 3–10Disk Status Screen

DISK STATUSCLEAR=<tier><channel> resets the channel error counts.

DISK DEFECTLIST=<tier><channel> displays the defect list information for a specified disk. The tier is in the range of <1..125>. The channel is one of the following: A, B, C, D, E, F, G, P, or S. The list is classified into two types: G (Grown) and P (Permanent) (Figure 3–11).

The G list consists of the sectors that have become bad after the disk has left the factory and which can be added to at any time. The P list consists of the bad sectors that are found by the disk manufacturer .

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