Search the VMware Knowledge Base (KB)
View by Article ID

Unable to take a quiesced VMware snapshot of a virtual machine (1009073)

  • 74 Ratings


  • During quiesced backup operations (VMware snapshots) on a virtual machine with Microsoft iSCSI LUNs attached within the guest operating system, virtual machines may become unresponsive.
  • VMware snapshot operations may fail.
  • You may see the error:

    Creating a quiesced snapshot failed because the created snapshot operation exceeded the time limit for holding
    off I/O in the frozen virtual machine.

  • Using the snapshot manager through VMware Infrastructure (VI) Client to take a VMware snapshot of the virtual machine works without error.


When using the VSS or SYNC driver within a virtual machine, the tools attempt to quiesce all I/O, such as storage and memory, within the virtual machine.
If you are using Volume Shadow Copy service to perform the quiescing operation, see Troubleshooting Volume Shadow Copy quiesce related issues (1007696).
If you are using Microsoft's iSCSI initiator within the virtual machine, you cannot perform snapshot operations on the virtual machine because it is not supported. For more information, see Running a Third-Party iSCSI initiator in the Virtual Machine in the SAN System Design and Deployment Guide for your version of ESX. 


VCB, EMC Avamar, EMC Legato Networker, IBM Tivoli Storage Manager (TSM), Symantec BackupExec, Veritas NetBackup, CommVault Galaxy, Vizioncore vRanger/esxRanger/vRanger pro, CA Brightstor Arcserve, SyncSort Backup Express,, esxPress, BakBone NetVault, Veeam Backup 3.0, NetApp SMVI, NetApp SnapDrive, EMC, IBM, NetApp, Compellent, LeftHand, Dell, EQLogic, 3PAR, AC&NC, Adaptec, Agami Sysmtems, AMI, BlueArc, Celeros, Cybernetics, DataCore, Dot Hill Systems, Enhance Technology, FalconStor, Fujitsu, H3C Technologies, HDS, Hifn, Hitachi, HP, Infortrend, Intransa, iQstor, iStor, NEC, Newtech, Nexsan, Open-E, Overland Storage, Pillar Data Systems, Promise, RELDATA, Sanrad, Stonefly, StorMagic, Sun, Wasabi, Xiotech

Update History

04/16/2014 - Added under Products: VMware Data Recovery 1.x and 2.x VMware vSphere Data Protection 5.1.x and 5.5.x VMware vCenter Server 5.0.x, 5.1.x and 5.5.x

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.


  • 74 Ratings

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.

What can we do to improve this information? (4000 or fewer characters)

Please enter the Captcha code before clicking Submit.
  • 74 Ratings