DataCenter / Network

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Datacenter / Network

Our datacenter and network have been highly evaluated

Our Datacenter

Our Tokyo datacenter supports Clara Online's server services

Clara Online's Server Services are setup, managed and operated from our Tokyo datacenters. Important network management services such as nameservers are diversified across multiple network centers as part of our structure to are structurally diversified to give our customers a stable service.

A high security level is maintained for entry to the datacenters, including such measures as an application for entry, photo ID confirmation and fingerprints as well as 24x7 on-site security professionals.

Your servers and the data they contain are closely guarded. Halogen fire suppression systems, targeted air conditioning and earthquake resistance are all vital components in the protection of your servers.

Datacenter facility level

With the goal of providing the best environment possible, Clara Online's operational datacenters have 24x7 monitoring systems as well as thorough security and emergency measures.


Our datacenters are officially BS7799 and ISMS (Information Security Management System) certified.

Datacenter security level
・24 hour security at entrances
・On-site kitting space only accessible by authorized staff with a pass card
・Security cameras for monitoring inside the datacenter

Quakeproof/Fireproof facilities

In accordance with the 1981 New Earthquake Resistant Building Standard Amendment, our datacenters are built to withstand magnitude 7 earthquakes. A fire suppression system is also in operation and runs on nitrogen gas. In the event of a fire, your systems will not be inundated with water.

Heating, Ventilation and Air-Conditioning (HVAC) Systems

A completely redundant air conditioning system maintains the temperature at ideal levels for servers. The N + 1 air-conditioning system means that even if one machine breaks, the others will be there to serve as backup.

Electricity UPS(CVCF)

As well as having access to multiple power sources, our data centers also have batteries and emergency power generators in place to ensure a constant power supply for your systems. In the rare event of a loss of electricity, the emergency generator can run on emergency fuel stores for up to 18 hours. In addition, batteries are available to supply power for the 1st minute before the power generator fully starts.

Key Features of Clara Online data centers

Seismic resistant structure Reinforced Concrete Structure
1.25 times more robust than the specifications in Building Standard Law of Japan
Power Supply 66 kV extra high voltage power supply through looped network
UPS/CVCF UPS (Uninterrupted Power Supply) / CVCF (Constant Voltage Constant Frequency) with N+1 redundancy
Generators Four 3000kVA Emergency private power generators
Two 65000 Liter Oil Tanks, 24 Hour Operation
Air Conditioning System N+1 redundant HVAC (heating, ventilation, air conditioning) systems
Fire Prevention Facility Gas fire extinguishing system with highly sensitive smoke detector and Harmless Argon + Nitrogen Gas
Security Advanced security with non-contact IC Cards and monitoring by CCTV 24x7x365

Network Overview

We have abundant experience operating networks and with our systems available 24 hours a day 7 days a week 365 days a year, we provide a world class communication environment that ensures smooth running of your mission-critical business operations. We are one of the few hosting providers with an exclusive AS number (AS23661) using the BGP-4 routing control. In addition, Clara Online also has leased a line between Tennosu NOC and Tokyo Datacenter, with redundant network carriers, to assure connectivity to the Internet.

Network Backbone

Backbone Diagram

Fully redundant network architecture with no single points of failure

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