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Disk write caching policy on Server 2k8-R2 RRS feed

  • Question

  • Default Disk write caching policy is disabled when i start Windows Server 2K8-R2

    Anyone can help me enable it automatic?

    Monday, July 23, 2012 3:42 AM

Answers

  • Hello,


    The Write-caching policy is by default enabled in Windows Server 2008 R2. But, when a Windows 2008 R2 server is promoted to be a Domain Controller, Write-caching will be disabled and reset to disabled after a reboot. Here’s the Microsoft KB you may refer to.


    Slow Network Performance After You Promote a Windows 2000-Based Server to a Domain Controller
    http://support.microsoft.com/?id=321543


    This problem may occur if a disk's write caching functionality has been turned off. If you use the Dcpromo tool to promote a Windows 2000-based server to a domain controller, the write caching functionality (write-back cache is a firmware function) is turned off for any of the logical drives that contain the Active Directory database or log files, including the system disk. Write caching is turned off because the File Replication Service (FRS) does not recover if power to the drive is interrupted and if critical updates are lost.


    Thanks
    Zhang

    Monday, July 23, 2012 5:56 AM
    Moderator