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November 8th, 2010 08:00
Replication Manager: Consistent replication of MSSQL 2005 on VMFS?
Dear folks,
I got some questions regarding the following scenario:
We have a VMware environment with various VMs and want to replicate those VMs via the EMC Replication Manager. The replication using just the VMFS (no RDMs! were configured) is not the problem. It rather is the question what happens with the MSSQL 2005 databases residing on some of the VMFS Datastores?
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- Can you assure an application consistent replication of the databases?
- How is this assured? Is the Virtual Device Interface (VDI) of MSSQL used for that?
- How is the VDI used via the Proxy Server?
- Are there any conditions to be fulfilled regarding an application consistent replication of VMFS Datastores (e. g. "only one vmdk on a datastore")?
Thank you in advance!
Regards,
Markus
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DennyHopkins
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November 15th, 2011 11:00
I am also interested in the answer to this and wondering how the solution changes if you had chosen to place the Databases on RDM vs VMDK disk.
etaljic81
1K Posts
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November 15th, 2011 12:00
When you configured the RM application set, did you select the SQL Database or did you select the VMFS Datastore?
I think that you selected VMFS Datastore. If that's the case then VDI is not being used (answer to question 2). Instead, all VMs inside the VMFS datastore that you chose in RM get quiesced by using VMware Tools (answer to question 3). VMware Tools flush from memory to disk. This is not appliacation consistency per say (answer to question 4) since it is not using VDI nor VSS and instead you can call this OS consistency since VMWare Tools are being used on each VM.
Hope this helps.