Be aware that those information are for OVA deployments on ESXi Server only. Avaya has announced to allow IPO to be virtualized on Microsoft Hyper-V, KVM and Amazon Web Services (AWS) with the release of R10.1 but that is not covered here.

The challenge

Avaya publishes a deployment guide for virtualized IP Office server for every release containing information about the needed memory and CPU resources. They also tell us what size the hard disk has to have based on the number of users. That is important because the OVA image by default has a disk size of 100GB. If the server has to handle more users you will also need a bigger hard disk. Another reason for increasing the disk size can be to use the IP Office server as backup target for the whole Server Edition solution. The backup task checks that there is enough disk space available to start the backup. Based on Avaya’s documents there has to be 60GB free disk space available if Voicemail Pro is not installed and 120GB if it is installed. If there isn’t enough space the backup will fail.

So you see the issue? The OVA comes with a 100GB disk but needs 120GB free disk space for backups… Continue reading →