Perle Systems Application Note
Consolidating Multiple Servers into a VMWare Environment
Multiple servers communicating with directly attached serial devices
When consolidating multiple servers with serial devices into a VMWare virtual
machine (VM) environment it is not practical, or sometimes not possible,
to install a sufficient number of COM ports into the VMWare Server. All
VM environments have limitations on installing additional or unsupported hardware.
Many have limitations on the number of COM ports available to each VM.
Perle’s TruePort utility allows you to create virtual COM ports when installed
into the VM Guest OS. Because TruePort is a virtual COM port driver it
is not restricted by VMWare’s hardware or software COM port limitations.
This enables each VM to communicate with at least 4096 serial devices attached
to Perle Device Servers, TruePort also allows VMs to share access to these
serial devices.
VMWare Server communicating with virtually attached serial devices The example above shows single port Perle Device Servers. Multi-port
Perle Device Servers can also be used equally well for clustered serial devices.
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