Quiesced Snapshot of Instance Cannot Be Created

Product Version: 9.3
Last Modified: 19 May 2020

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. Verify that:
   • You are using the right credentials for the instance.
   • The credentials you are using have administrative permissions.
2. Instance access. Verify that:
   • Instance security group allows access to TCP ports 445 and 9445 from the Director.
3. Instance configuration. Verify 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.
   • The SMB 2 protocol is enabled in the instance.