
1-2 SPARC Enterprise Mx000 Servers XSCF User’s Guide • December 2010
Note – (1) Processors on server boards are called CPUs.
Note – (2) Only the system model with a special interface can power on and off the
peripheral devices. (See Remote Cabinet Interface (RCI) in External Interfaces.)
Redundant XSCFs (High-End Servers Only)
The high-end servers use a redundant configuration of XSCF Units, thereby providing high
system reliability. The XSCF that controls the server is called the Active XSCF or Active
XSCF Unit, while the other XSCF acts as a backup and is called the Standby XSCF or
Standby XSCF Unit. The Active XSCF and the Standby XSCF monitor each other, and if an
error is detected, they determine when a failover switching to Active or Standby should be
performed.
External Interfaces
The following connectors (ports) and LEDs act as the external interface of the XSCF Unit.
The user, system administrator, and field engineer (FE) can use these ports for server
monitoring and XSCF firmware operations:
■ One Serial port that can be used for the command-line interface (CLI) (Note 1)
■ Two Ethernet ports (XSCF-LAN ports) (10Base-T / 100Base-T (TX))
CLI and the browser user interface (BUI) can be used with these ports for server
monitoring and operations. (Note 1)
■ USB port that an FE or a system administrator can use to save and restore hardware
information
■ Two UPS Controller (UPC) ports to connect the entire system with an Uninterruptible
Power Supply Unit (UPS)
A UPS is connected for backup power control purposes in the event of a power outage. In
the M8000/M9000 servers, the UPC interface ports are in the cabinet.
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