Quantum Scalar 218FC User Manual page 40

4) Set to Auto-assigned, target ID priority
5) Set to Auto-assigned, bus number priority
X) Return to Previous Menu
If your selected HBA supports SCC Mode set the SCSI
Mapping Mode to SCC.
The factory default setting is: 5) Set to Auto-assigned, bus
number priority.
At the head of the display is the current value of the Fibre Channel-to-SCSI Mapping Mode. The default
value is SCSI Controller Command (SCC). There are five possible mapping modes:
SCC— Use the SCSI-3 Controller Command Set (SCC) Logical Unit Addressing method. This mode
requires that the host device driver is capable of addressing a controller device. In this mode, the
controller will respond directly to commands issued using the Peripheral Device Addressing Method.
Commands addressed using the Logical Unit Addressing Method will be routed to the appropriate SCSI
device as specified by the host.
Indexed—provides a user-configurable table that maps FCP LUN values to SCSI devices directly. In
this mode, the controller is not addressable by the host. Configuration allows for sequential FCP LUN
values (0, 1, 2,...) to be mapped to arbitrary SCSI BUS:TARGET:LUN addresses. This table can then be
saved in FLASH memory and will persist across power cycles. Various editing assists are provided for
creating and modifying this table.
Auto-assigned, LUN priority—Auto assigned mode is similar to indexed mode: a table is used to map
FCP LUN values to SCSI addresses. However, this table is created at power up and does not persist
across reboots or power cycles. Discovery is performed on the SCSI bus, and each device is added to the
table in the order in which it is discovered.
In LUN priority, as discovery is performed, the LUN value is incremented after the Target value. Therefore,
as discovery is performed, all SCSI targets are identified before subsequent LUNs are identified.
Auto-assigned, target ID priority—As discovery is performed, the Target value is incremented after the
LUN. Therefore, all LUNs appear adjacent to the target device in the table.
Auto-assigned bus number priority—This option is not relevant to the configuration of the FCR100,
which has only one bus.
To change the Fibre Channel-to-SCSI mapping mode:
1. Press the number corresponding to the desired mapping mode.
2. Press X to return to the Configuration Menu.
3. Press A on the Configuration Menu to save the new mapping configuration.
SCSI-to-Fibre Channel Mapping
The SCSI-to-Fibre Channel Mapping option is not supported by your Scalar 218FC.
30 Configuring the Fibre Channel Subsystem
Notes