If you want to perform ZDB, install and configure also the VSS and VDS hardware providers. See the: Latest support matrices on the web for an up-to-date list of supported versions, platforms, devices, disk arrays, limitations, and other information.
We have a P2000 G3 SAN attached to a Hyper-v 2012 server ( SAS connected ). Latest Capi proxy and VSS Provider drivers are installed. Latest SAN firmware is installed.
We create a backup job (Veeam) configured to trigger the hardware vss provider. The job includes several virtual machines.
During each VM backup, veeam triggers the snapshot, backup the VM and then releases the snapshot. This only works though for the first VM: veeam triggers the snapshot, a snappool is created on the SAN, a snapshot is created for the volume, the VM is backed up, the snapshot and snappool are deleted. When Veeam tries to backup the second VM, it tries to trigger a vss snapshot again, but an error occurs and in the application log this is logged and the backup fails: capiCreateSnapshots(): Capi Error 0x000000AC (Error: CAPI_ERROR_NOT_A_MASTER_VOLUME) on operation reply. All snapshots followed after this, give the same error. Only when the event ' The VSS service is shutting down due to idle timeout.'
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Is logged on the Windows 2012 hyper-v server (after some idle time) then the first snapshot will succeed again, all following wil fail again etc. Anyone seen this happening? It sounds like your SAN is deleting the snap pool and converting the master volume to a standard volume when the last snapshot is deleted. There is a registry key you can modify to change this behavior. From pages 24-25 of the HP StorageWorks MSA System VDS and VSS Hardware Providers Installation Guide: ( ) Snap pools are automatically deleted In order to help manage limited disk space and snapshot licenses, the VSS Hardware Provider will, by default, automatically convert master volumes to standard volumes when the last snapshot for the volume is removed, and automatically delete snap pools when no snapshots refer to them. However, this mode of operation may cause problems in environments where some manual management of snap pools is desired, or in SAN environments where multiple hosts are using VSS to create and delete snapshots concurrently on the same array. To avoid these issues, the VSS Hardware Provider can be configured so that it does not attempt to automatically create or delete snap pools or convert standard volumes to master volumes and vice versa.
Instead, the administrator must perform these steps manually.
Following are the prerequisites for the Microsoft Volume Shadow Copy Service integration: • Before you begin, ensure that you have correctly installed and configured Data Protector, writers. If you want to perform ZDB, install and configure also the VSS and VDS hardware providers. See the: • Latest support matrices on the web for an up-to-date list of supported versions, platforms, devices, disk arrays, limitations, and other information.
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• Data Protector Installation Guide for information of how to install Data Protector on various architectures and how to install the Data Protector Microsoft Volume Shadow Copy Service integration and ZDB agents. • Writers and shadow copy providers documentation for instructions of how to install and configure writers and providers on your system. • Install any needed Microsoft Windows patches or hotfixes. For a detailed list, see the latest support matrices. Contents • • • • • Transportable backup prerequisites • The backup system must be configured to accept connections from the application system and the other way round.
• The following Data Protector and storage components must be installed and configured on both the application and backup system: • MS Volume Shadow Copy Integration • The appropriate Data Protector disk array agent • VSS hardware provider Depending on the operating system version and disk array, the following Storage components may be required: • VDS hardware provider • For ZDB, the VDS hardware provider is optional. • For instant recovery, certain limitations may apply, depending on the disk array family and version of the operating system. In some cases, the VDS hardware provider is required for a successful instant recovery. If a failover from the active to the standby management system happens, proceed as follows: • If standby and failed management systems have the same hostname, no action is needed. • If standby and failed management systems have different hostnames, remove the failed system from the Data Protector configuration, and then add the new management system. When using a VSS hardware provider in a Microsoft Cluster environment, a transportable shadow copy (replica) must be transported outside of the cluster if the original volume is mounted within the cluster. As a result, Data Protector supports only the following configurations in a cluster: • Local or network backup using a VSS software provider.