Using Windows Server 2012 R2 to build private cloud

Four layers

>Compute layer
Several Hyper-V hosts joined in a failover cluster.
Use commodity server hardware to provide cost-efficient scale-out capabilities.
Scale-out approach is more cost-effective than Scale-up approach.

>Network layer
A low-cost Ethernet network is used to connect the Hyper-V cluster.
Provide compute resources with Scale-out File Servers.
It's more cost-effective than using SAN.　Expensive host bus adapters not needed.
It's posible because of smb 3.0 is introduced in windows server 2012.

>Virtualized storage layer
Virtual machines files(virtual hard disks,configuration files etc) and other data  such as sql data can be stored in the SoFS

>Physical storage layer
Can be stored on different types of storage devices(SATA,SAS,HDDs,SSDs)
Just a Bunch of Disks

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