TA-1005 RAID Module cache backup issue

Figure 1. The jumper wire on Intel

Integrated RAID Module RMS25PB080, RMS25PB040 and RMT3PB080

Figure 2. The jumper wire on Intel

Integrated RAID Module RMS25CB080, RMS25CB040 and RMT3CB080

Root Cause

During AC power cycle testing Intel found a rare occurrence where data yet to be written to disk from the RAID module’s

DDR3 memory may be lost even though cache protection is enabled by the Battery Backup Unit (Intel

RAID Smart

Battery AXXRSBBU9) or the RAID Maintenance Free Backup Unit (Intel

RAID Maintenance Free Backup Unit

AXXRMFBU2) that is installed. The issue has a very low occurrence rate and is observed on a small percentage of

modules. The component changes and jumper wire solution provides a resolution to this issue.

Corrective Action / Resolution

The component changes and jumper wire are an interim solution. A new version of the PCB has been designed that

incorporates the necessary changes and the new PCB is scheduled for availability in July 2012. Intel does not anticipate

any functional nor quality impact with the jumper wire solution. If the jumper wire solution is not acceptable, please order

the new modules with the changes designed into the PCB solution, new MM# for the new revision of these products are

listed below.

- Intel

Integrated RAID Module RMS25PB080 MM# 923072

- Intel

Integrated RAID Module RMS25PB040 MM# 923083

- Intel

Integrated RAID Module RMT3PB080 MM# 923084

- Intel

Integrated RAID Module RMS25CB080 MM# 923085

- Intel

Integrated RAID Module RMS25CB040 MM# 923086

- Intel

Integrated RAID Module RMT3CB080 MM# 923087

Modules, which do not support cache backup solution, are available as well if the jumper wire solution is not acceptable.

- Intel

Integrated RAID Module RMS25PB080N MM# 922597

- Intel

Integrated RAID Module RMS25CB080N MM# 922598

Please contact your Intel Sales Representative if you require more specific information about this issue.

Enterprise Platforms & Services Division

Intel Corporation