Windows Azure Support for Windows Server Failover Cluster (WSFC)
Windows Server Failover Cluster (WSFC) is a state of the art HA technology for on premise world. It would be great to have support on Windows Azure, and specially to have support for SHARE DISKS. By supporting WSFC, Windows Azure would be the first IaaS platform that supports application HA!!
We are working to understand the requirements of this feature and deliver it. If you have any scenarios or examples that might help us take a decision kindly give a detailed comment below.
We see many customers who implement 2-node SQL Clusters with FCI and Shared VHDX which cannot be protected with ASR. Fortunately SQL Server 2016 Standard edition allows for SQL AllwaysOn/Availability Groups which is compatible with ASR
Aaron Moloci commented
Our SQL Instances are typically set up as guest clusters, with multiple shared VHDX files depending on performance requirements. We need the clustering capabilities to maintain a high availability environment and while SQL Always on is an option for the databases, the environment consists of more than just a set of databases, there are systems specific to our data application that if the environment as a whole was not recoverable, the database simply isn't good enough. that we could keep going business as usual.
In almost every design for customers we use shared VHDX for guest clusters where shared storage is involved. Sometimes customers don't want to pay the premium of SQL Enterprise to benefit from SQL Server AlwaysOn Availability Groups and install SQL Server FCI which requires shared storage. File Server guest clusters require shared storage. Shared VHDX is really important for us to be used with ASR
For this you should firstly take backup of all your personal data. So that after when ever you want you can have that data available with you. And for the backup i can suggest you to take backup from "Cloudbacko pro" Software. I am basically taking backup from long time and really satisfied using this software. So if you want you can take backup from this. http://www.cloudbacko.com/
With support for Shared VHDX in Azure this would make WSFC in Azure a great additional service. Customers often do not have Enterprise licenses to make Availability Groups work.
David Bermingham commented
Failover Clusters are officially supported as of April 1, 2015, albeit it must use a 3rd party volume replication solutions published in the Azure Marketplace, like SIOS DataKeeper. https://support.microsoft.com/en-us/kb/2721672
Douglas James Boyd commented
This is something that would make Azure attractive to us for SQL servers, Exchange, File server clusters, and many other services. Application level HA is still of great importance in the cloud
Samir FARHAT (MVP) commented
This is a feature promised in Windows Server VNext, and i think that you Aidan, wrote about it. Do you think they will make this possible in ASR ? since ASR is Hyper-V based when dealing with VM replication
Aidan Finn commented
HA is implemented on-premises using WSFC - it is the norm since "Wolfpack" for NT 4.0 Server. Hyper-V VMs implement this using Shared VHDX. It is necessary to be able to replicate these VMs (and their data in the shared VHDX) to Azure.
Do you have instances of shared VHDX deployments in your environments?
Could you give an idea of how many such VHDx’s might be there in a typical customer environment?
Also how is Shared VHDx used?
1. Over SMB?
2. Over iSCSI with VHD?
3. Over iSCSI with pass through disk?
Today shared VHDx based Virtual machines are not supported to be protected using ASR. Need protection for them.