VMware GSX 3 - Manual (Page 186)

www.vmware.com
186
VMware GSX Server Administration Guide
Configuring and Maintaining
the Host Computer
You may see slower virtual machine performance if the physical disk that holds the
virtual machine’s working directory or the physical disk that holds the virtual disk files
is badly fragmented. By default, the working directory holds the virtual disk files and is
on the host computer. If you have customized the virtual machine configuration, you
may have placed the working directory or the virtual disk files on a different physical
computer.
Fragmentation of the host disk can affect any or all of the following:
• The files that hold a virtual disk
• The files that store newly saved data when you take a snapshot
• The files that hold information used in suspending and resuming a virtual
machine
If you are experiencing slow disk performance in the virtual machine, or if you want to
improve the speed of suspend and resume operations, check to be sure the host disk
that holds the virtual machine’s working directory and virtual disk files is not badly
fragmented. If it is fragmented, you can improve performance by running a
defragmentation utility to reduce fragmentation on that host disk.