BT Diamond IP Sapphire Ev20 IPAM appliance provides centralized IP address management (IPAM) capabilities for large scale IP networks. The Sapphire Ev20 runs BT's IPControl software to enable management of your IPv4 and IPv6 address space and to configure your premises or cloud-based Sapphire, ISC or Microsoft DHCP and DNS services. Your Sapphire Ev20 may also be instantiated to serve as a redundant peer to provide cloud-based IPAM database backups of your primary IPControl deployment. Sapphire appliances are built from the ground up for security and robustness. Our appliances offer numerous security features including a hardened operating system (OS), network interface access control lists (ACLs), minimal open ports, uninterruptible boot process and jailed file system to name a few.