Stronghold Data has two locations for data centers. Both facilities are located in underground rock quarries in the Mid-West USA, making us virtually indestructible. One of the many benefits of being underground is that the natural air temperature is 60° - 64°F year-round, which serves to naturally provide the ideal computing atmosphere. Both locations have multiple levels of security, including 24-hour security guards and computerized controlled door systems as well as video surveillance.
Stronghold's backbone internet connection is via multiple tier 1 carriers. We are running BGP4 (Border Gateway Protocol) on all edge routers with a 1 Gbps redundant link between them. The Cisco 7507 edge routers are equipped with redundant DC power supplies, dual DC power feeds and redundant RSP-8 Route Switch Processors. This redundancy insures that the failure of any single part of the router will not impact operations.
Our Broadband Network consists of: Foundry Big Iron 8000's, Big Iron 4000's, and FastIron Layer 2 and Layer 3 Switching Routers. We are utilizing OSPF (Open Shortest Path First) Routing protocol for recovery on a cross-meshed network with 1 Gigabit backbone connections that have the ability to scale to 10 Gigabits. This provides us an abundance of bandwidth for your traffic needs.
All edge router and server equipment is located in one of three "tornado proof" hardened and secure data centers. To address electrical power reliability, diverse feeds from 2 substations, redundant batteries, and two diesel generator backups assure continuous operations.
A three pipe chilled water system serves the underground’s cooling requirements via redundant Liebert units to precisely control the environment within each internal building. All system chillers and ancillary equipment are located underground to ensure continuous operations during a natural/unnatural event. Additionally, two dehumidification units maintain 50% humidity within the common area to enhance the mine’s natural environment. Fire suppression within each building is provided by FM-200 fire protection systems. The common area is protected by a double interlock zoned sprinkler system to ensure loss prevention. Fire detection is not only provided by standard smoke and ionization detection systems, but also VESDA is utilized within areas of the facilities, batteries, and diesel generator backup assure continuous operations.
