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Clock changes after reboot RRS feed

  • Question

  • Hi, migrated windows 2008 std 32bit virtual machine from citrix xenserver to vmware. It migrated successfully without any error. But while using this vm whenever we reboot the vm clock getting changed. We checked the time zone it is correct.

    Also checked other vm's in same physical host they are showing correct time after reboot.

    Please Help.

    Wednesday, April 16, 2014 12:59 PM

Answers

  • you can togle time sync on or off VIA the VMware Tools that is running on the system tray of the server.

    best practice, however, is to make sure the NTP time server is correctly configured on the VM host server.

    • Proposed as answer by Daniel JiSun Tuesday, April 22, 2014 1:44 AM
    • Marked as answer by Daniel JiSun Thursday, April 24, 2014 8:59 AM
    Thursday, April 17, 2014 4:34 AM
  • After reading back my email, command line I gave you are for Xen servers ...

    Take a look at the following documentation : http://www.vmware.com/files/pdf/techpaper/Timekeeping-In-VirtualMachines.pdf

    Regards,

    TiGrOu.

    • Proposed as answer by Daniel JiSun Tuesday, April 22, 2014 1:44 AM
    • Marked as answer by Daniel JiSun Thursday, April 24, 2014 8:59 AM
    Thursday, April 17, 2014 8:06 AM

All replies

  • Hello,

    I'm not sure you posted this in the right place over Technet forums.

    Anyway, did you try this :

    Step1:
    Find out current date and time and then set the date and time using following command
    date –s

    Step 2:
    Then check the current time at BIOS using following command
    hwclock  --show

    Step 3:
    And then synch the clock using following command
    hwclock  --systohc

    Regards.

    TiGrOu.

    Wednesday, April 16, 2014 2:33 PM
  • I'm not sure you posted this in the right place over Technet forums.

    I agree; this is really a question for VMware and understanding how clocks are synchronized between the VMware host and the virtual machines.

    Lawrence Garvin, M.S., MCSA, MCITP:EA, MCDBA
    SolarWinds Head Geek
    Microsoft MVP - Software Packaging, Deployment & Servicing (2005-2014)
    My MVP Profile: http://mvp.microsoft.com/en-us/mvp/Lawrence%20R%20Garvin-32101
    http://www.solarwinds.com/gotmicrosoft
    The views expressed on this post are mine and do not necessarily reflect the views of SolarWinds.

    Wednesday, April 16, 2014 10:29 PM
  • Hi, I agree with this but at least you can provide some solution to diagnose the problem for windows. Because all other vm's didn't have the clock issue and also the physical hosts time is also correct.

    • Proposed as answer by Bob0413 Thursday, April 17, 2014 4:33 AM
    • Unproposed as answer by Bob0413 Thursday, April 17, 2014 4:33 AM
    Thursday, April 17, 2014 4:29 AM
  • you can togle time sync on or off VIA the VMware Tools that is running on the system tray of the server.

    best practice, however, is to make sure the NTP time server is correctly configured on the VM host server.

    • Proposed as answer by Daniel JiSun Tuesday, April 22, 2014 1:44 AM
    • Marked as answer by Daniel JiSun Thursday, April 24, 2014 8:59 AM
    Thursday, April 17, 2014 4:34 AM
  • After reading back my email, command line I gave you are for Xen servers ...

    Take a look at the following documentation : http://www.vmware.com/files/pdf/techpaper/Timekeeping-In-VirtualMachines.pdf

    Regards,

    TiGrOu.

    • Proposed as answer by Daniel JiSun Tuesday, April 22, 2014 1:44 AM
    • Marked as answer by Daniel JiSun Thursday, April 24, 2014 8:59 AM
    Thursday, April 17, 2014 8:06 AM