Hybrid Information Command Test (LOGO)

This test ensures that the following hybrid commands are working as defined in the requirements:

  • Change by LBA

  • Hybrid Control –Both threshold and disable/enable cache

  • Evict

  • Demote By Size

Test details

Associated requirements


See the device hardware requirements.


Windows 8.1 x64 Windows 8.1 x86

Expected run time

~240 minutes


Certification Functional




Running the test

Before you run the test, complete the test setup as described in the test requirements: Hard Disk Drive Testing Prerequisites.


For troubleshooting information, see Troubleshooting Device.Storage Testing.

Hybridflt.sys must be installed for this test to work properly.

More information

The test should automatically turn the hybrid information on before checking the logs if it was not on already.

This test relies on some behavior of hybrids that are not tested in this particular test or in some test cases. Ensure that tagged I/Os go to the cache and that dirty data thresholds are respected.

You can use the Command Syntax section to execute a specific test case.




The logging level for the test where 0 is least verbose and 4 is most verbose. You should leave this at its default value unless you need to troubleshoot individual test cases.

Default value: 1


Command syntax


Hybriddrive.exe –drive <disk #> -scenario logcommand

Runs the test.

-Drive <disk#>

The drive to be tested on. The behavior of boot drives or drives with a file system is not defined.


The logging level for this test.


Displays help.

-Scenario logcommand

The scenario to run.

-case #

The test case to run.




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