![]() Guest clustering is an interesting option to run a clustered Windows Server configuration on top of a physical Hyper-V cluster to allow application high availability on top of virtual machine high availability. ![]() There is a new option starting in Windows Server 2012 to share virtual VHDX hard disks between virtual machines. The dynamic sizing option is the option that is preferred when creating VHDX files. This greatly improves the performance of dynamic-sized VHDX files, making the difference in performance negligible between fixed and dynamic. VHDX files also leverage larger block sizes for both the dynamic and differencing disk formats. VHDX files automatically align to the physical disk structure. Users may want to capture notes about the specific VHDX file such as the operating system contained or patches that have been applied.Īligning the virtual hard disk format to the disk sector size provides performance improvements. This also opens up the possibility to store custom metadata about a file. ![]() With the improved logging features that are contained within the VHDX virtual disk metadata, the VHDX virtual disk is further protected from the corruption that could happen due to unexpected power failure or power loss. This also will negate the need to perform pass-through storage provisioning if this was necessary for size reasons. ![]() However, for most, there will be no disk that will not fall within the boundaries of this new disk size and most will not even come close to this new configuration maximum. The 64 TB virtual hard disk size certainly opens up some pretty interesting use cases. What are the new configuration maximums for the VHDX file format? The VHDX virtual disk file format was introduced with Windows Server 2012 and provides a much more powerful virtual disk format that helps to solve some of the scalability and performance constraints that exist with the VHD file format. To begin with, let’s take a step back and look at basic features that VHDX provides and why Hyper-V administrators would choose to use the newer VHDX file format as opposed to the VHD virtual disk. Resizing Hyper-V VHDX Virtual Disk Files.In this post, we will take a look at optimizing and resizing Hyper-V VHDX Disk as well as the features and functionality gained by using the VHDX file format, including the optimization capabilities. The VHDX file format improves upon the legacy VHD virtual disk file format to incorporate powerful functionality and features that allow Hyper-V virtual environments to be much more efficient, error-free, and scalable than in previous generations. With later generations of Hyper-V, the new VHDX virtual disk format provides some really great new functionality from this perspective. One task that comes with maintaining and optimizing a Hyper-V environment is making sure the actual virtual disks themselves are running optimally and are efficiently sized. There are various tasks that a Hyper-V administrator can perform to keep a Windows Server Hyper-V environment running optimally. In general, if you’re using a newer version of Windows and Hyper-V, it’s recommended to use VHDX instead of VHD due to its improved features and performance. VHDX also supports both dynamic and fixed disk types, and includes other features like larger block sizes, improved alignment of the virtual hard disk, and protection against power failures It offers improved performance, larger maximum size limit of 64TB, and a more resilient architecture than VHD. VHDX (Hyper-V Virtual Hard Disk) is the newer and improved format introduced with Windows Server 2012 and Windows 8.It has a maximum size limit of 2TB and supports both dynamic and fixed disk types VHD (Virtual Hard Disk) is the older format and was introduced with Microsoft Virtual PC. ![]() VHD and VHDX are both virtual hard disk file formats used by Microsoft’s virtualization solutions, such as Hyper-V and Virtual PC (retired in 2011). ![]()
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