Windows 2019, Optimization not available for Thin provisioned driver.

BillyChiuSH 1 Reputation point
2020-12-09T09:10:50.973+00:00

Hi All, 

  I am using the Windows Server 2019 (version 1809). When I try to optimize my disk with defragment tool, I found it display "Optimization not available" for the disk type is Thin Provisioned.  And Optimize button is gray out too.  

  I just want to double confirm if Microsoft think it is not able to do optimization for thin provisioned drive or any other reason to disable it.  

  But when I use the command line "defrag e: /U /V", it will do analyzation and retrim it.

46410-untitled.png

Thanks,
Billy

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
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2 answers

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  1. Carl Fan 6,786 Reputation points Microsoft Vendor
    2020-12-10T06:48:36.46+00:00

    Hi Billy,
    Some people met the same issue before, some steps below:
    Try to stop the optimize drives service and then deleting all the Volume{GUID} keys in:

    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\Statistics
    Hope this helps and please help to accept as Answer if the response is useful.
    Best Regards,
    Carl

  2. BillyChiuSH 1 Reputation point
    2020-12-11T09:49:41+00:00

    Hi All, 

    I used the wireshark to capture the iSCSI package about the "analyze" button, Windows only send a INQUIRY command with page code 0xB0 (Block Limits Page).
Then the tool judge the optimization not available. Do you know if there is any key value will make this result?

    Thanks,
    Billy