| Sun Fire X4100 M2/X4200 M2 Servers Product Notes |     |
| C H A P T E R 4 |
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Hardware Issues |
This chapter describes new hardware features and issues related to the Oracle Sun Fire X4100 M2/X4200 M2 servers.
| Note - If a problem statement does not specify a particular platform, the problem applies to all platforms. |
This chapter contains the following sections:
Some 4-GB DIMMs supplied for use with dual-core systems can have single-bit or multiple bit errors after systems are upgraded to quad-core. Symptoms include sudden crashes and failure to boot. Not all existing 4GB DIMMs are affected.
If you are planning to upgrade your system to use quad-core processors, you should visually inspect any existing 4-GB DIMMs. Affected DIMMs have a a Micron label similar to the one below.
The affected DIMMs can be identified by the logo and the first two numbers on the label.
If the label matches the above description, it is not compatible with a quad-core processor. To obtain a replacement, contact Sun Service, and refer to FAB 244406.
Option cards supported by operating systems are listed on the platform-specific product webpage under Companion Products. To check if the driver of your option card is available for download, check the Option Cards link on the Product Page.
For example, to get information on the Sun Fire X4100 M2 server and related option cards, see:
http://www.oracle.com/technetwork/indexes/downloads/sun-az-index-095901.html#S
The InfiniBand card cannot be used on systems running Solaris 10 10/08.
For optimum performance, all DIMMs controlled by a given CPU should be the same capacity and all single-rank or dual-rank. Mixed configurations are supported, but could result in lower memory performance. Note that all supported 4-GB and 8-GB DIMMs are dual-rank. For 1-GB and 2-GB DIMMs, you can identify the type by counting the DRAMs; single-rank DIMMs have 18 DRAMs, while dual-rank DIMMs have 36 DRAMs.
Problems have been reported with the following Sun optical mice on the Sun Fire X4100/X4200 servers:
Problems have also been reported with the following keyboards when used in the front bottom USB port on the Sun Fire X4200 server.
The servers have six fan modules (FMs) organized into two fan trays (FTs)--an upper (FT0) and a lower (FT1). If there is a failure in either FM1 or FM2 in FT0, the LEDs light up to indicate failure for both FM1 and FM2 modules.
The keyboard on the X4200 server does not respond in POST after BIOS recovery.
The workaround for all platforms with CK8/IO4 is to do the following:
1. DsNpReqLmt = 0x01 (in northbridges).
2. Disable P2P-PW = 0; clear Bus0,Dev0,Fun0,Offset 0x74, bit11.
3. Set rate balancing: Bits 25:24 of NV_XVR_VEND_XP1 (offset 0xF04) to 1.
Servers running software version 2.1 at the time of reboot and with PowerNow disabled, IPMI information shows the hyper transport sync flood errors on both systems.
When the system attempts to reboot after a thermal shutdown, it might shut down during the boot process. This is because over-heated system needs extra time to cool down.
Correct the cause of the overheating, then wait until the system is cool before restarting it.
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Caution - Investigate and remedy overheating before resuming normal operation. Otherwise, the system may be damaged. |
Higher than expected failure rate is experienced with 4-GB DIMM on an X4100 system.
When PowerNow is enabled, idle processors shut down to conserve power. This disables the sensor, causing extremely low temperatures to be reported:
# ipmitool -H td60-sp -U root -P changeme sdr | grep t_core p0.t_core | 1 degrees C | ok p1.t_core | 1 degrees C | ok
This is a feature of the AMD processor and cannot be changed.
| Sun Fire X4100 M2/X4200 M2 Servers Product Notes | 819-5038-23 | |
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