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1. Shut down the deployed template gracefully and create an instance
2. Update the instance (e.g. install new service pack or security patch)
3. Promote the template to a master template, with a name that denotes it as the new version. See Manage Instancesinstance templates in datacenters
4. Propagate the new template to all the relevant datacenters' appliance libraries
5. Share the new template in the appliance library to all enterprises as applicable
6. Rename or change the description of the old template to show users that it is deprecated

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Updating VM Template Disk Files using the Appliance Manager API

In Abiquo 3.6.1+, you You can update virtual machine VM template disk files. The use case is as follows.

• Upload or download a template
• Use it to create a virtual machine VM 
• Update the template. Abiquo supports changes to:
  
  • file content
  • size
  • format
    
    • see Template Compatibility Tablecompatibility table
  • capacity
• Update the disk using the Appliance manager API 
• When the user next deploys the virtual machineVM, the platform will copy the updated disk

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Changing the virtual disks of a template on the NFS filesystem, such as replacing a VMDK file in the NFS repository, is not recommended. This is because you would also need to correctly update fields such as ''virtualimage.diskFileSize'' in the underlying Abiquo database. Changes to the Abiquo database are not recommended or supported by Abiquo. The OVF information may also need to be updated if you change the underlying virtual disk because sometimes this information may be required to maintain platform coherence.

User Interface Error Messages for Templates

These are the user interface error messages that will be generated if you attempt to delete templates or instance that are 'in use':

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