Sun Microsystems 880 Hot-plug function is not disabled when only one power supply exists (BugID 4408237), CE memory reporting is ambiguous (BugID 4491362)

Sun Fire 880 Server Product Notes 25

Hot-plug function is not disabled when only onepower supply exists (BugID 4408237)

A Sun Fire 880 system with only one working power supply is an unsupported

configuration. A system configured with the minimum two power supplies (the

non-redundant configuration) may shut down abruptly if either power supply fails.

However,on a system with only two power supplies, if one power supply fails, the

system may continue operating with only one functional power supply.In this

degraded state, if you then attempt to add a PCI card through a hot-plug operation,

the additional power demands of the card may exceed the capacity of a single

supply,resulting in an immediate system shutdown. The Solaris 8 7/01 operating

environmentdoes not recognize a Sun Fire 880 configuration with one power supply

and does not inhibit PCI hot-plug operations under these circumstances. Installation

of an optional third power supply enables the system to remain fully operational

should any single supply fail.

CE memory reporting is ambiguous(BugID 4491362)

On a Sun Fire880 system running the Solaris 8 07/01 or 8 10/01 operating system, if

a dual inline memory module (DIMM) encounters a ce error,Solaris will not

identify the correct CPU/Memory board that the failing DIMM resides on. Solaris

reports the correct DIMM location within the CPU/Memory board, but Solaris does

not identify which CPU/Memory board in the system that the failing DIMM resides

on.

Workaround– To correctly identify the failing DIMM, use the following procedure.

1. Bring the system to the ok prompt.

a. Place the security keyswitch to the Diagnostics position.

This forces the system to run POST and OpenBoot diagnostics during system

startup.

b. Press and release the system Power button.

Pressing the Power button initiates a graceful software system shutdown.

c. After the system has powered off, wait at least 30 seconds. Then power on the

system by pressing the system Power button.

When the system initiates the startup sequence with the keyswitch in the

Diagnostics position, itwill run POST and OpenBoot diagnostics tests during system

startup. For more information about POST and OpenBoot, see “Diagnostics and

Troubleshooting”in the Sun Fire 880 Server Service Manual.