Unity automatically reserves 1 of 30 units of the same type for use as a warm reserve you can reduce the number of heat spare parts by reducing the number of individual unit types. The Disk Processor Enclosures DPE utilizes dual storage processors and a full 12 GB SAS backend connection to deliver high performance and efficiency levels. Installing Unity connection is quite easy Cisco Unity Connection Release 7 Installation Guide. X provides clear instructions on tasks and process. Media Player and Workstation versions are running on your computer under the current operating system and you are running other operating systems in VMware. You can find an old Dell by HP server at an affordable price but make sure it has a dual or quad Core 2 gigahertz CPU d ka CPUs are even better at least 8 gigabytes of RAM and 300 gigabytes of hard disk space.Unity automatically reserves 1 out of every 30 drives of the same type for use as a hot spare you can reduce the number of hot spare drives by decreasing the number of individual drive types.The Disk Processor Enclosure DPE leverages dual storage processors and full 12-Gb SAS back-end connectivity to deliver high levels of performance and efficiency.Installing Unity Connection is fairly easy the Installation Guide for Cisco Unity Connection Release 7.x provides clear instructions regarding the tasks and process.The Player and Workstation versions run on your personal computer under your current operating system and you run other operating systems inside of VMware.You can find an old Dell of HP server for an affordable price but be sure it has a dual or quad core 2 gigahertz CPU dual CPUs is even better at least 8 gigabytes of RAM and 300 gigabytes of hard drive space.