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Product Version: 6.0
Last Modified: 28 Jan 2016

Problem

The following error message appears:

Quiesced (application-aware) snapshot of this instance cannot be created.

Background

When the “Application-aware mode” is enabled, the snapshot works as follows:

  • NAKIVO Backup & Replication injects a runtime VSS Driver into the instance.
  • NAKIVO Backup & Replication requests the VSS Driver to create a quiesced snapshot.
  • VSS Driver uses VSS inside a Windows instance to freeze I/O requests of applications inside the OS.
  • If OS quiescing fails to create an application-consistent snapshot, NAKIVO Backup & Replication displays this error.

Possible Cause

The error may be caused by:

  • Credentials:
    • Incorrect credentials to the instance
    • Insufficient level of permissions
  • Instance access:
    • Incorrect configuration of the instance security group
    • Incorrect Windows firewall configuration inside the instance
  • Instance configuration:
    • Incorrect configuration of the instance OS

Solution

  1. Credentials. Make sure that:
    • You are using the right credentials for the instance.
    • Credentials you are using have administrative permissions.
  2. Instance access. Make sure that:
    • Instance security group allows access to TCP ports 445 and 9445 from the Director.
  3. Instance configuration. Make sure that:
    • Your instance OS is supported for EC2 application-aware processing.
    • The "File Services" or "File and Storage Services" role is enabled in the instance.
    • Default administrative shares are enabled in the instance.
    • SMB 2 protocol is enabled in the instance.
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