| Adapter | This is the hardware path of the Fibre
Channel adapter that the Logical Unit Number (LUN) is seen. For multiport
adapters, this field describes a specific port on the adapter. |
| Domain | Dependent on the Fibre Channel topology
of the HBA. | Typically the Domain ID of the switch the
target device is attached, taken from the most significant byte of
the N_Port ID of the target device. | 8 HP-UX uses a Domain ID of 8 to indicate
private loops. Fibre Channel switches seen by HP-UX hosts cannot be
configured with domain ID of 8. |
| Area | Depends on the Fibre Channel topology
of the HBA. | Taken from the second byte of the
N_Port ID of the target device. On
some switches, the second byte of the N_POrt encodes the switch port
to the connected device. The encoding method depends on the switch.
See your switch manual to interpret this field. | 0 |
| Port | Depends on the
Fibre Channel topology of the HBA, the target device, and the LUN
addressing method used. | For LUNs with Peripheral Device
Addressing, the value of the field is always 255. |
| | | For other LUN methods, the
value of this field is the least significant byte of the N_Port ID
of the target device. | For other LUN methods, the value
of this field is the Loop ID of the target device. |
| Bus | Depends on the Fibre Channel topology of the HBA, the target
device, and the LUN addressing method used. | For LUNs with Peripheral Device Addressing, the value of this field
is the upper 4 bits of the least
significant byte of the N_Port ID of the target device. | For LUNs with Peripheral Device Addressing, the value of
this field is the upper 4 bits of
the Loop ID of the target device. |
| For LUNs with Logical Unit Addressing, the value is the
Bus Number field of the LUN. |
| For LUNs with Volume Set Addressing (Flat Space Addressing), the
value are bits 7–13 of the LUN. |
| Target | Depends on the Fibre Channel topology and the LUN addressing
method used. | For Luns with Peripheral
Device Addressing, the value of this field is the lower 4 bits of the third byte of the N_Port ID of the
target device. This field usually corresponds to the Arbitrated
Loop Physical Address (AL_PA_ of the target device. | With Peripheral Device Addressing, the value of
this field is the lower 4 bits of
the Loop ID of the target device. |
| For LUNs with Logical Unit Addressing, the value id the
Target field of the LUN. |
| For LUNs with Volume Set Addressing (Flat Space Addressing), the
value are bits 3–6 of the LUN. |
| LUN | Depends only on the LUN addressing method used. |
| | |
| LUN
Addressing Method | Value of LUN field in Fibre Channel hardware
path. |
| Peripheral
Device Addressing | The Target or LUN field of the Logical Unit
Number. |
| Logical
Unit Addressing | The LUN field of the Logical Unit Number. |
Volume Set
Addressing (Flat Space Addressing) | Bits 0 —
2 of the Logical Unit Number. |
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