Virtualization And Disk Performance

This document defines key concepts related to virtualization and disk performance. It discusses how virtualization can compound disk fragmentation issues and slow performance. The disk subsystem is identified as the main performance bottleneck for virtualized environments due to the additional processing layers from guest to host systems. Best practices for improving disk performance in virtualized servers include advanced defragmentation of host and guest systems, adjusting filesystem settings, separating disks and partitions, and using high-performance storage.