Hello!
I have Windows 2012Datacenter (Russian) Cluster with Cluster Shared Volumes (for VMs). when I try to backup (Backupexec 2010 R3) VM from this cluster I have error:
Volume Shadow Copy Service error: Unexpected error query interface IVssWriterCallback. hr = 0x80070005, Access is denied.
. The most likely reason - incorrect security settings requesting process or recording process.
operation:
Data collection by the writer
context:
Class Code Writer: {e8132975-6f93-4464-a53e-1050253ae220}
Name the writer: System Writer
Writer Instance ID: {a5550c18-d3f0-4a2a-ab53-e908b8152a5d}
PS - i have same standalone 2012 server - all backups VM from this server goes without any error!
PS2 - i try change DCOM security on some cluster hosts - but it did not help...
(...
Go to DCOM setup : dcomcnfg --> Expand Component Services, Computers --> Right-click My Computer --> Properties --> COM Security tab.
Under Access Permission click Edit Default. --> add the "Network Service" account with Local Access allowed.
Restart the computer !
no more 8194 error.
...)
PS3 all servers disks for all servers placed on CX3-80 storage (Fiber).
PS4. if i try to backup CSV volume (with VM's folders) - all is OK! - without any error!