Chapter 5. File system alignment
File system misalignment will only be a problem if you are using Windows Vista or Windows Server 2008 as an operating system for virtual machines that are stored on a storage attached network (SAN). This is not just a Hyper-V problem; it will also occur for other hypervisors. Thomas Roettinger explains how to identify and deal with this issue.
Identifying file system misalignment
Working with a virtual environment also means working with different layers of storage. Windows Server systems running Hyper-V include the following layers:
File system inside a VHD/VHDX
NTFS on the host
LUN
For the best possible performance of your storage subsystem, you want the file system inside the VHD, the NTFS file system of the host, ...
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