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Driver Parameters

ALPA (Arbitrated Loop Port Address)

This parameter selects the AL_PA that the adapter requests during the loop

initialization. The AL_PA selected has to be a valid value; the default of 17 (hex) is

compatible with previous drivers. The following is the list of all possible AL_PAs. FC

disks typically use values at the high end of the list, and host adapters at the low end.

0x01 0x02 0x04 0x08 0x0F 0x10 0x17 0x18 0x1B

0x1D 0x1E 0x1F 0x23 0x25 0x26 0x27 0x29 0x2A

0x2B 0x2C 0x2D 0x2E 0x31 0x32 0x33 0x34 0x35

0x36 0x39 0x3A 0x3C 0x43 0x45 0x46 0x47 0x49

0x4A 0x4B 0x4C 0x4D 0x4E 0x51 0x52 0x53 0x54

0x55 0x56 0x59 0x5A 0x5C 0x63 0x65 0x66 0x67

0x69 0x6A 0x6B 0x6C 0x6D 0x6E 0x71 0x72 0x73

0x74 0x75 0x76 0x79 0x7A 0x7C 0x80 0x81 0x82

0x84 0x88 0x8F 0x90 0x97 0x98 0x9B 0x9D 0x9E

0x9F 0xA3 0xA5 0xA6 0xA7 0xA9 0xAA 0xAB 0xAC

0xAD 0xAE 0xB1 0xB2 0xB3 0xB4 0xB5 0xB6 0xB9

0xBA 0xBC 0xC3 0xC5 0xC6 0xC7 0xC9 0xCA 0xCB

0xCC 0xCD 0xCE 0xD1 0xD2 0xD3 0xD4 0xD5 0xD6

0xD9 0xDA 0xDC 0xE0 0xE1 0xE2 0xE4 0xE8 0xEF

HARD_ADDRESS_MODE

Boolean parameter: 0 = not selected, 1 = selected. Default is

HARD_ADDRESS_MODE = 0;

If HARD_ADDRESS_MODE is not selected (the default), whenever devices are

discovered/rediscovered (such as after cable disconnect/connect or drive

removal/insertion) the World Wide Port Name and the World Wide Node Name of the

device are compared to verify that the same device is present as was previously there.

If HARD_ADDRESS_MODE is selected, no checking is performed to verify that a

device discovered at one Fibre Channel address is the same as the one previously

found there. HARD_ADDRESS_MODE is used for certain dual−channel RAID arrays

where you do not have the option of retaining the World Wide Port Name and the World

Wide Node Name of the controller when replacing the controller. Using it for any other

situation may cause I/O to be sent to the new device when it shouldn't be.

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