Inzai Campus (SI)

Location

The Inzai area is resistant to natural disasters and offers good access from the city center, making it an ideal location for data centers.

Robust Alluvial Plateau

Located on a robust alluvial plateau with no major active faults within a 40 km radius, this location is less susceptible to the impacts of seismic shaking.
Low Tsunami Risk

Located more than 20 km from the coast and at an elevation of 22.5 meters above sea level, there is no concern for tsunami damage.
Low Flood Risk

The vicinity lacks large rivers (first-class rivers), and on hazard maps, it is evaluated as having a low risk of flooding and liquefaction.
Minimum of 38 minutes from the city center

With excellent transportation access, it is a minimum of 38 minutes from Nihonbashi and a minimum of 22 minutes from Narita Airport. It is also outside the traffic control area in the event of a disaster.

Joint Ditches due to Inzai City's Corporate Attraction Policy

The area where netXDC's Chiba Data Center is located is equipped with "joint ditches." Concrete underground tunnels house water supply pipes, power cables, and communication cables, as well as hot and cold water pipes used for air conditioning throughout the region. This setup eliminates the risk of "power loss" or "emergency vehicles being unable to access" due to utility poles falling during earthquakes.

Facilities

Earthquake Countermeasures

As a countermeasure against horizontal shaking, we have adopted multiple base isolation devices, and for vertical shaking, we utilize critical damping dampers (VEM dampers) that support each floor. The combination of these measures can reduce earthquake shaking by up to 80%.

Power Equipment & UPS

The power supply at our center employs a main and reserve line system, with two separate power lines from the substation. In the unlikely event of a power outage, the UPS (Uninterruptible Power Supply) will provide power for approximately 10 minutes while the backup generators start up. The UPS is designed with a block redundant configuration that boasts an MTBF (Mean Time Between Failures) of 125 years, ensuring high reliability.

Private Generators

The private generators are installed in an N+1 configuration, allowing for continuous operation for 72 hours without refueling. We also conduct monthly test runs and annual dummy load operation tests, ensuring that power supply can be swiftly switched to the private generators in case

Server Room

The server rooms provide spaces in units of over 450 square meters, and we can customize the optimal usage environment to meet your demands. Within the freeaccess area, sufficient height and power cable space are secured, and by storing network cables in a dedicated ladder above the racks, the airflow from the air conditioning can be efficiently delivered to the racks.

Security

We implement multi-level security checks within the facility, including 24-hour manned monitoring using cameras and various sensors, personal belongings inspection with X-ray machines and metal detectors, identity verification using a combination of IC cards and biometric authentication, prevention of piggybacking into server rooms, and rack access controlled by security locks.

Air Conditioning Equipment

We adopt a water-cooled central air conditioning system designed with transport efficiency, heat load, and equipment space in mind. During the winter and intermediate seasons, the introduction of an outdoor air cooling system (free cooling) significantly reduces the power consumption of the thermal source air conditioning equipment, contributing to green IT.

Specifications

		Chiba Center (SI1)	Chiba Data Center No. 2 (SI2)	Chiba Data Center No. 3 (SI３)
Compliance with Equipment Standards		Equivalent to JDCC Tier 4	JDCC Tier 4 Compliant	Equivalent to JDCC Tier 4 netXDC URL
Opening		2002	2015	2022
Building	Total Floor Area	14.353㎡	15.586㎡	12,919㎡
	Scale	8 floors above ground, 1 tower floor (including 4 server room floors, equivalent to 1,200 racks)	6 floors above ground, 1 penthouse floor (including 4 server room floors, equivalent to 1,600 racks)	7 floors above ground, 2 penthouse floors (including 8 server rooms, equivalent to 1,600 racks)
	Structure	SRC construction, base-isolated structure	Steel construction, base isolation + vertical vibration damping	Steel construction, base isolation + vertical vibration damping
Power Equipment	Receiving Equipment	Special high-voltage reception, main/reserve line method	Special high-voltage reception, main/reserve line method	Special high-voltage reception, main/reserve line method
	Private Generators	Gas turbine generator (capable of continuous operation for 72 hours without refueling)	Gas turbine generator (capable of continuous operation for 72 hours without refueling)	Diesel generator (capable of continuous operation for 72 hours without refueling)
	UPS	Parallel redundant configuration (10 minutes compensation)	Block redundant system (10 minutes compensation)	Block redundant system (10 minutes compensation)
Air Conditioning Equipment		Water-cooled central air conditioning (N+1 redundant configuration)	Water-cooled central air conditioning (N+2 redundant configuration)	Air-cooled free cooling chiller (N+1 redundant configuration), with the option to upgrade to N+2 redundancy.