Removing A Board - Sun Microsystems Enterprise 6500 Reference Manual

The SBus+ I/O board with 100 MB/sec Fibre Channel includes two SYSIO ASICs that
provide two SBuses:
One for two plug-in SBus cards and two GBIC interfaces
One for one plug-in SBus card and the onboard devices (10/100 Mbit TPE and
Single-ended Fast/Wide SCSI).
Note – SBus connector slots 1 and 2 on the SBus+ I/O board can accommodate a
double-wide SBus card.
The Graphics+ I/O board with 100 MB/sec Fibre Channel includes one SYSIO ASIC that
provides a single SBus for two plug-in SBus cards, two GBIC interfaces, and the
onboard devices (10/100 Mbit TPE and Single-ended Fast/Wide SCSI).
The PCI+ I/O board has two PCI bus connectors:
Each connector can accommodate a PCI riser card
Each riser card accommodates one PCI short card
In addition, onboard devices on the PCI+ I/O board provide Fast Ethernet (10/100
Mbit) and Fast Wide SCSI interfacing.
4.5.2

Removing a Board

Note – It is not necessary to remove an I/O+ board from the card cage to remove
and replace GBICs. A GBIC may be removed and replaced "live" (without removing
power from the system or board). However, the necessary software precautions must
be taken whenever the I/O path to a particular disk is to be interrupted; halt all I/O
activity to the disk affected by the replacement of a GBIC. To replace a GBIC or fiber
optic cable, proceed to Section 4.5.6 "GBICs."
4.5.2.1 Removing a Board from a Powered-On System
Caution – Remove a board from a powered-on system only after the ASR software
has disabled the board. If a board has not been disabled by the ASR software, then
the operating system should be halted and the system powered off prior to board
removal. See Chapter 11 "Powering Off and On" and then Section 4.5.2.2 "Removing
a Board from a Powered-Off System."
4-8 Sun Enterprise 6500/5500/4500 Systems Reference Manual • April 1998