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Windows Event Log: Miniport Driver Is Trying to Use More Than 8 SCSI Buses

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Microsoft recently released an update that generates a System Event Log message on systems running Microsoft Windows 7*, Windows Server 2008 R2* or earlier operating systems.
No warning logged when the Storport miniport driver tries to use more than 8 SCSI buses in Windows Server 2008 R2*.

This new System Event Log entry only displays on systems running the following components:

System Event Log message:

This Storport* miniport driver is trying to use more than 8 SCSI buses. This exceeds the supported maximum on this operating system. Please contact your storage controller manufacturer to determine whether this device and driver is designed to work on this operating system.

Note For Intel® Rapid Storage Technology enterprise (Intel® RSTe), buses are the number of SAS ports on the host, whether they are connected or not. One extra bus is allocated for the RAID function, which results in nine, generating the System Event Log message.


This Microsoft update is not a result of new Intel® RSTe features or changed functionality. The update is a result of something recently realized by Microsoft that has been in the Intel® RSTe driver architecture since its inception.

There have been no critical errors and only one non-critical error encountered as a result of how the RSTe driver is architected. See the answer to the "What is the reported issue?" question below.

All Intel RSTe drivers are fully validated and have successfully completed Microsoft’s WHQL* testing requirements prior to release.

Frequently asked questions

Click (+) or the questions to expand the content:

I’ve never seen this warning message before, what is it?

Why did Microsoft add this warning?

What is the reported issue?

How does this issue affect the use of RSTe?

Will this issue cause data loss or corruption?

Can I turn this message off, or stop it from recurring?

What is the workaround to this issue?

How does Intel characterize the impact or risk?

This applies to:

Intel® Rapid Storage Technology enterprise (Intel® RSTe)
Intel® Server Board S1200RP
Intel® Server Board S1400FP Family
Intel® Server Board S1400SP Family
Intel® Server Board S1600JP Family
Intel® Server Board S2400BB
Intel® Server Board S2400EP Family
Intel® Server Board S2400GP Family
Intel® Server Board S2400LP Family
Intel® Server Board S2400SC Family
Intel® Server Board S2600CO Family
Intel® Server Board S2600CP Family
Intel® Server Board S2600GL
Intel® Server Board S2600GZ
Intel® Server Board S2600IP Family
Intel® Server Board S2600JF
Intel® Server Board S2600WP
Intel® Server Board S4600LH Family
Intel® Server System H2000JF Family
Intel® Server System H2000LP Family
Intel® Server System H2000WP Family
Intel® Server System P4000CP Family
Intel® Server System P4000IP Family
Intel® Server System P4000RP Family
Intel® Server System P4000SC Family
Intel® Server System R1000BB Family
Intel® Server System R1000EP Family
Intel® Server System R1000JP Family
Intel® Server System R1000RP Family
Intel® Server System R1000SP Family
Intel® Server System R2000BB Family
Intel® Server System R2000GL Family
Intel® Server System R2000GZ Family
Intel® Server System R2000IP Family
Intel® Server System R2000LH2 Family
Intel® Server System R2000LT2 Family
Intel® Server System R2000SC Family
Intel® Workstation Board W2600CR Family
Intel® Workstation System P4300CR Family

Solution ID: CS-034625
Last Modified: 15-Dec-2014
Date Created: 12-Dec-2013
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