Carrier Class Data Centres

In partnership with a Certified Microsoft Facility – RebelNetworks utilized the data center.
Located in San Jose, Silicon Valley, Market Post Tower is one of only a few tier-4 datacenters in the US, as classified by the Uptime Institute, the world's leading authority on datacenter uptime. The tier-4 category is for facilities "fundamentally immune to planned and unplanned downtime".

Infrastructure

	Tier-4 datacenter. Although official ratings are from tier 1 (lowest) up to tier 4 (highest), many smaller hosting companies confuse customers by claiming 'tier-1' facilities – in an attempt to hide that they are in small, local datacenters, or outdated 1990s facilities.
	Environmental control units that give a 100% SLA-guaranteed temperature and humidity within a certain range.
	The most advanced pre-action fire-suppression systems available.
	Raised floors and zone-4 certified for earthquakes.

Security

	All premises are closely monitored and guarded, 24x7x365, with sophisticated pan/tilt CCTV covering every part of the facility and security guards posted at all entrances.
	Access to servers is restricted to a limited number of authorized engineers.
	Security is strictly enforced using the very latest technology, including man-trap technology between lobby and datacenter, motion sensors and controlled ID key-cards.
	Security guards stationed at every entrance to the site.

Power

	Dual-feed 12KV power supply from PG&E.
	Designed for N+1 redundancy with redundant power feeds.
	Powerware UPS modules and PDUs with static switches on front end.
	6 emergency redundant back-up diesel generators.

Connectivity

	Market Post Tower is home to Verizon's MAE-West facility.
	The West Coast's most important communications hub, with carriers including AT&T, Global Crossing, Level 3 Communications, MCI/Verizon, Singapore Telecom, Sprint.
	Failover arrangements to two additional Intermedia California facilities ensure constant uptime.

Cooling

	Fully-redundant, roof-mounted, 1500-ton, Liebert system with common ducting, plus security via the elimination of water-filled piping from the datacenter space.
	Roof-mounted Carrier air-cooled chillers and air handlers.
	CRAC units in the electrical and UPS rooms.
	All servers are 64-bit Dell PowerEdge servers, with multiple multi-core processors.
	Adheres to Microsoft best practices for Exchange deployments.
	Passive-active cluster server configuration for ultimate resilience, plus seamless failover when a cluster node is unavailable or taken offline for maintenance.
	Redundant and load-balanced Exchange servers increase reliability.

Storage

	New EMC SAN-based storage with disk clusters in an advanced RAID array for seamless failover.
	Full tape back-ups ensure there's no single point of failure anywhere within the storage system.

Network

	Diverse network entry points which manage traffic flow to the Internet.
	Failover links to second and third California locations for resilience.
	Traffic managed by Cisco routers and switches, with HP rack distribution switches.
	Netscreen 500 firewall protects the Exchange environment.
	All ports closed except for those that are essential to Exchange traffic, with 100% of incoming traffic monitored by anti-virus and anti-spam technology.

Monitoring

	Entire Exchange environment and all servers monitored 24x7x365 by our large technical team.
	State-of-the-art monitoring system to analyze and preempt issues, both actual and potential.
	Full range of metrics monitored, including CPU, memory and disk space utilization, the size of the mail queues, the status of Outlook Web Access (OWA), different Exchange-related ports and RPC latenc