Users Guide
• Dell has opened a ticket with Microsoft to address this situation.
Creating Backup Sets in a Hyper-V Cluster
Virtual machines may be moved among cluster nodes for a variety of reasons. Virtual machines may be moved manually, for example, in
preparation for planned server maintenance. Virtual machines may also be moved dynamically, for example, when the Dynamic Optimization
feature is enabled in Virtual Machine Manager. During Dynamic Optimization, the resources of each node in a cluster are monitored to
optimize the placement of virtual machines initially and during failover.
In an environment where virtual machines move often within a cluster, and where collections of virtual machines do not consistently move
together, each Replay Manager backup set should contain only one virtual machine per CSV. This avoids the need to frequently re-create
backup sets to account for the movement of individual virtual machines.
Support of Recovery with Pass-Through Disks
As Microsoft supports the virtualization of applications like SQL Server and Exchange, more administrators are virtualizing their application
environments and using pass-through disks for data volumes. If there are pass-through disks attached to a virtual machine, Replay
Manager can be installed on the virtual server guest to back up the data volumes for the application. Because of the abstraction layer that
is introduced in virtualizing the hardware, the only way to recover a snapshot directly back to the virtual machine is by using the Microsoft
iSCSI Software Initiator which is available as a free download from Microsoft (for Microsoft Vista and Microsoft Server 2008 (and later),
the iSCSI Software Initiator is included with the operating system). iSCSI uses Ethernet connectivity which is readily accessible by a virtual
machine and is easy to congure both on the server as well as the storage.
VSS Error Event ID 8194
When backing up Hyper-V virtual machines, the following error may be logged in the Windows Event Log:
Event ID 8194
Volume Shadow Copy Service error: Unexpected error querying for the
IVssWriterCallback interface. hr = 0×80070005, Access is denied.
This error does not prevent backup jobs from completing successfully and it can be safely ignored.
Additional Information on Using Replay Manager with Hyper-V
For further information on how Hyper-V integrates with Replay Manager, see the Dell Storage Center Replay Manager 7 and Microsoft
Hyper-V Best Practices Guide.
See the following link (login required) : http://en.community.dell.com/techcenter/extras/m/white_papers/20437951
Microsoft SQL Server
Replay Manager supports backing up and restoring data for Microsoft SQL Server 2016, Microsoft SQL Server 2014, Microsoft SQL Server
2012, Microsoft SQL Server 2008 R2, and Microsoft SQL Server 2008.
General Guidelines for Microsoft SQL Server
For all versions of Microsoft SQL Server, follow these general guidelines for backing up and restoring data.
• Use the Replay Manager SQL Databases backup extension—do not use the Local Volumes backup extension
The Local Volumes Extension allows an administrator to select entire volumes when dening a backup set. Each database stored on the
selected volumes wait for the current process to nish before temporarily halting further operations, if all volumes used by the database
Replay Manager Best Practices
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