We recommend that you connect I/O riser 0 (local I/O riser ports 0 and 1) to the primary PCI drawer that will be the master system control manager (SCM).
The
–A standard I/O module in slot
firmware. The SCM is powered by the Vaux output of the PCI power supply whenever AC power is applied to the PCI drawer.
The master SCM uses the console serial bus (CSB) to:
Control system
Monitor and configure the system
3Halt and reset the system Update firmware
–Operating system disk
–Two remote I/O riser modules (for connection to the QBB local I/O riser module)
–Two PCI backplanes: Each PCI backplane (Figure
–CD-ROM
–Two power supplies (providing a redundant power supply)
–Console serial bus (CSB) interface module: The console serial bus consists of a network of microprocessors that the master SCM controls in a master/slave relationship. Each node is programmed to control and monitor the subsystem in which it resides, in response to commands from, or when being polled, by the master SCM.
3The CSB network consists of the following nodes:
One to eight SCMs. The primary PCI drawer that is connected to the operator control panel (OCP), and, with the lowest node ID (usually 0), is the default master SCM upon initial
