Xelia's state-of-the-art Internet Data Centers and Network Control Center (NOC) features the most advanced monitoring and control systems available today. These facilities offer world-class services as well as one of the most robust content distribution architectures available in the world.

HVAC systems include chilled water based systems and additional systems that control humidity and air makeup. The Environmental Systems include redundant Liebert Cooling Towers and Pumps for the chilled water-cooling systems, air conditioners and air handlers in the data facility and Computer/Telco rooms, as well as chilled water for mainframe systems.

The data facilities are protected by the building's security system, internal and external proximity card-key code access system, and 100% coverage CCTV video surveillance and recording systems. All cabinets come with individually locking doors and all access to the facility is governed through mantraps.

The data facility's fire and smoke detection system includes three separate FM 200 systems; one for the main data center area, one for the UPS systems and one for the battery room. Smoke detection includes above-floor and above-ceiling smoke detectors. FM 200 systems will discharge in a particular area when only one detector and zone are faulted. A pre-action dry pipe sprinkler system backs up the FM 200 systems.

The Network Operations Center actively monitors all Limelight Networks® customers 24 hours per day, 7 days per week. Customers also have access to the same powerful real-time network and delivery information tools that are used in the NOC.

The core switches are dual foundry Big Irons with Juniper M40 routers that are fully meshed with no single point of failure. The network infrastructure is IP based with switches that feed each cabinet. Available connections include:

• Ethernet 10/100baseT
• Gigabit Ethernet
• DSL
• T1 up to 20 M/s symetric
• T3
• In some locations, 20 M/s DSL is available
• Fiber optic 

The location includes SONET ring protection from all fiber carriers into the data center with redundant connections provided by local metro rings. As a result, Limelight Networks® data facilities possess redundant metro networks, switch equipment and diverse fiber optic paths into the building.

We implement redundancy of the exterior fiber plants coming into the building by utilizing two separate and diverse entrance locations. Each entrance is connected to separate CO's to ensure survivability.

Electrical and power redundancies are provided by dual or greater electrical grids in the area. We have at least two power grids provided by separate power substations into dual automatic transfer switches  feeding the uninterrupted power supply (UPS). In the event of a power outage, the generator(s) must be capable of sustaining the entire facility, and are automatically engaged. The Power grids feed dual fully-redundant True Online® MGE 225 KVA UPS systems. Each of the UPS systems feeds Power Distribution Units (PDU). Each of the PDUs can feed all the systems in the facility. Each MGE UPS unit has dual (redundant) battery banks.