SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

12 Configuring and Managing Open SCSI Devices
An Open SCSI device is a device that obeys the ANSI standard protocol for the small computer
system interface (SCSI) to communicate with the system through the Open SCSI I/O process. An
Open SCSI device has the object type of SCSI.
The SCSI object can also represent Fibre Channel devices that use the SCSI protocol to communicate
with the system. These devices are called Open SCSI Fibre Channel devices.
Unless stated otherwise, references to Open SCSI devices also refer to Open SCSI Fibre Channel
devices. For details about Open SCSI devices, see “The SCSI Object” (page 38) and “SCSI Object
States” (page 38). For commands that affect SCSI devices, see “SCF Commands and Object Types”
(page 190). This chapter describes:
• “Configuring Paths for Open SCSI Devices” (page 170)
• “Displaying Information About an Open SCSI Device” (page 171)
“Displaying Configuration Information” (page 171)◦
◦ “Displaying Status Information” (page 173)
• “Configuring an Open SCSI Device” (page 174)
“Adding an Open SCSI Device” (page 174)◦
◦ “Adding a Similar Open SCSI Device to This System” (page 175)
◦ “Adding a Similar Open SCSI Device to Another System” (page 175)
◦ “Adding an Open SCSI Fibre Channel Device” (page 175)
• “Managing an Open SCSI Device” (page 176)
“Starting an Open SCSI Device” (page 177)◦
◦ “Altering Open SCSI Attribute Values” (page 176)
◦ “Resetting an Open SCSI Device” (page 176)
◦ “Changing the Active Data Path for an Open SCSI Device” (page 177)
◦ “Swapping Processors for an Open SCSI Device” (page 177)
◦ “Stopping an Open SCSI Device” (page 177)
◦ “Deleting an Open SCSI Device” (page 176)
Configuring Paths for Open SCSI Devices
The values you specify when configuring an Open SCSI device vary depending on the type of
connection and the NonStop server model. For example, the valid ranges for group, module, and
slot of an Open SCSI device connected to an FCSA on an Integrity NonStop NS-series server differ
from those of an Open SCSI device connected to an ServerNet/DA on a NonStop S-series server
NOTE: When a NonStop S-series I/O enclosure is attached to an Integrity NonStop NS-series
system, the enclosure retains the same group number it had on the NonStop S-series system.
However, if the appropriate port for the group number is not available on the Integrity NS-series
server, you must change the group number of the I/O enclosure. For more information, see the
NonStop NS-Series Hardware Installation Manual.
170 Configuring and Managing Open SCSI Devices