WLK Aggressive Optical Drive Test
Note This content applies to the Windows Logo Kit (WLK). For the latest information using the new Windows Hardware Certification Kit (HCK), see Windows HCK User's Guide on the Windows Hardware Dev Center.
Type: Automated Test
The aggressive optical drive test validates whether the drive remains spinning for at least 10 seconds unless a START STOP UNIT command is received to spin down the disk. Currently, it is not a WLK requirement that drives must remain spinning for at least 10 seconds; however, this will be a requirement in the future. This prevents the problem of drives aggressively spinning down, such as when FBI warnings are shown in media content and then have to be spun again. Aggressive drive spinning results in increased power consumption and wear and tear on the optical drive.
This test consists of sending three preliminary reads to obtain an average of how long a short read (read while disk is spinning) takes. We then do a read after 10 seconds and compare the average short read value with the long read to see if the drive stopped.
Run Time: 2 minutes
Log File: DVDWLK.wtl
System Restart Required: No
Test Category: Storage
Supported operating systems for Logo or Signature testing:
Windows Server 2008 R2
Windows Server 2008
Windows Server 2003
The test tool requires the following software:
Supported operating system (see list above)
Windows Media Player
The test tool requires the following hardware:
Machine with optical drive that is capable of playing DVDs
Any non-CSS-encrypted DVD that contains 30+ minutes of video content. Insert this DVD into the optical drive prior to running the test. A good source of content is the Microsoft Test Annex DVD that can be ordered at the following Microsoft web site: Order the DVD Test Annex
Note This DVD is also required for the WLK CSS Negotiation/Region Check test.
The test tool runs on the following processor architectures:
x64 (x86 with WOW)
Running the Test
Follow the below syntax to run the test. No other parameters are required. The test will register a failure if the read sent after the 10-second delay is greater than two standard deviations of the average of the short reads (which indicates that the drive has stopped spinning).
This test has required parameters. Without any parameters entered, the test will output help text
Specifies the volume of the optical disk drive (for example, D:) When run in an automated setting with WTT, the Create Storage Parameters setup task will resolve the drive letter with the parameter StorageDriveLetter.
Since the test binary contains four separate tests, this parameter specifies that test case 1 (DVD Aggressive Optical Drive Test) should be run. It is necessary to also specify the number of times for the test to be run. This is set by default in the test job to 1.
Build date: 9/14/2012