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rx8640 - Fiber HBA PCI-e Link Width

Deepak.R
Frequent Advisor

rx8640 - Fiber HBA PCI-e Link Width

hello,

HAving performance issue on some of the HBAs. Can see the Link width of those cards are x1 and x4 while all the slots show capable of x8. All are same model cards. How to change teh link width to x8????

PCI-Express Slots Information
-----------------------------
Driver(s)
Capable
Slot Path Link Max Max Link Pwr Occu Susp OLAR OLD Mode
Spd Link Link Width
Spd Width
0-0-0-3 0/0/12/0/0/0 2.5 2.5 x8 x8 On Yes No Yes Yes PCIe
0-0-0-4 0/0/14/0/0/0 2.5 2.5 x8 x1 On Yes No Yes Yes PCIe
0-0-0-5 0/0/6/0/0/0 2.5 2.5 x8 x8 On Yes No Yes Yes PCIe
0-0-0-6 0/0/4/0/0/0 2.5 2.5 x8 x1 On Yes No Yes Yes PCIe
0-0-1-3 1/0/12/0/0/0 2.5 2.5 x8 x8 On Yes No Yes Yes PCIe
0-0-1-4 1/0/14/0/0/0 2.5 2.5 x8 x1 On Yes No Yes Yes PCIe
0-0-1-5 1/0/6/0/0/0 2.5 2.5 x8 x1 On Yes No Yes Yes PCIe
0-0-1-6 1/0/4/0/0/0 2.5 2.5 x8 x4 On Yes No Yes Yes PCIe


# ioscan -fnC fc
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
fc 0 0/0/4/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd0
fc 1 0/0/4/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd1
fc 2 0/0/6/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd2
fc 3 0/0/6/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd3
fc 4 0/0/12/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd4
fc 5 0/0/12/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd5
fc 6 0/0/14/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd6
fc 7 0/0/14/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd7
fc 8 1/0/4/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd8
fc 9 1/0/4/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd9
fc 10 1/0/6/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd10
fc 11 1/0/6/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd11
fc 12 1/0/12/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd12
fc 13 1/0/12/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd13
fc 14 1/0/14/0/0/0/0 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 1)
/dev/fcd14
fc 15 1/0/14/0/0/0/1 fcd CLAIMED INTERFACE HP AH401A 8Gb Dual Port PCIe Fibre Channel Adapter (FC Port 2)
/dev/fcd15