Difference between VHD and VHDx disk

Difference between VHD and VHDx disk

• The .vhd format has been used with Microsoft virtualization products since the days of Virtual Server. 
• The .vhdx format is new to Windows Server 2012.
• VHD:Virtual hard disk files in .vhd format are limited to 2040 GB. Virtual hard disks in this format are supported on Hyper-V hosts running Windows Server 2008, Windows Server 2008 R2, Windows Server 2012 and Windows Server 2012 R2.
• Other than the size limitation, the important thing to remember is that you cannot use virtual hard disk files in .vhd format with generation 2 VMs.
• VHDx: Virtual hard disks in .vhdx format have the following benefits:
• Can be up to 64 TB in size,Have larger block size for dynamic and differential disks,Provide 4-KB logical sector virtual disks,Have an internal log that reduces chance of corruption,Support trim to reclaim unused space
• The main limitation of virtual hard disks in .vhdx format is that they cannot be used with Hyper-V on Windows Server 2008 or Windows Server 2008 R2.

Disk Performance dashboard view is empty in SCOM 2012 R2

Disk Performance dashboard view is empty in SCOM 2012 R2

• Disk Performance Dashboard View is empty. This is because the rule to see this data is not enabled. In order to populate this view, please enable the rules.

In 2012 Monitoring MP:

• Microsoft.Windows.Server.6.2.OperatingSystem.TotalPercentDPCTime.Collection
• Microsoft.Windows.Server.6.2.OperatingSystem.TotalPercentInterruptTime.Collection
• Microsoft.Windows.Server.6.2.Processor.PercentDPCTime.Collection
• Microsoft.Windows.Server.6.2.Processor.PercentInterruptTime.Collection

In 2012 R2 Monitoring MP:

• Microsoft.Windows.Server.2012.R2.OperatingSystem.TotalPercentDPCTime.Collection
• Microsoft.Windows.Server.2012.R2.OperatingSystem.TotalPercentInterruptTime.Collection

Add new Disk on Virtual Servers in Windows Azure

Extend Disk on Virtual Servers in Windows Azure

• First Login to Windows Azure portal and your Virtual Mahcine and select "Attach an Empty Disk"

• Now enter the Disk Size you want and click Create