IBM DS3512 error "Host wide port is degraded"

I am getting an error."Host wide port is degraded" in the IBM DS3512 storage. It is connected to IBM blade center H using the SAS switch. the port connected to the SAN sas switch  and the storage port showing orange color.


Date/Time: 11/12/13 5:24:43 PM

Sequence number: 5352

Event type: 1654

Description: Host wide port is degraded

Event specific codes: 0/0/0

Event category: State Change

Component type: Controller

Component location: Enclosure 99, Slot A

Logged by: Controller in slot A
jobby1Asked:
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jobby1Author Commented:
It is an HBA error.
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andyalderCommented:
I would suspect the cable, a SAS wide port is made from bundling together several single lanes - there are 4 lanes in the cable and normally all 4 are bundled into a single wide port, sounds like you have one or more lanes missing.  If you have two switches and dual domain I would reseat the cable both ends after checking (under MPIO, etc) that each host sees both connections.
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jobby1Author Commented:
I suspect one of the HBA adaper giving issue. I just disconnected this HBA and will observer one week.
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jobby1Author Commented:
It was a HBA error
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