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×Data Integrity

The integrity of WindX weather data is paramount. From the data logger, to the central data center, to final archival storage, utmost care is taken to preserve whole and pure wind observations. Industry best practices are employed in the areas of security, load balancing, fault-tolerance and redundancy.

The result of this approach is at least five copies of identical data: one on the data logger, two at the central server, and two at the offsite archival location.

×The Data Logger

The H2 data logger is designed to store up to a year's worth of data in non-volatile memory. If communications go down during an event, weather data will continue to be collected and safely stored locally. The data will then be transmitted to the central data center as soon as communication is restored. In the unlikely event that communications are not restored in a timely manner, data can be manually recovered from the data logger by a field technician. Even if the equipment were separated from its installation point, there is a high probability that the data collected would still be intact.

×Weather Station Security

WeatherFlow sensors and data loggers are physically secure. The equipment is installed at least 10 meters above ground level on specially designed concrete poles or latice towers. Where towers are used, access is through locked gates and/or barbed wire fences.

×Communications

Under normal conditions, weather data is transmitted in near real-time via GPRS modem. Data transmissions are encrypted over the air, with each discrete observation record validated by a checksum. If an individual transmission fails, it is re-transmitted at a later date.

×Central Data Center

The weather data arrives at the central data center on one of several machines in a cluster of processing servers. From there, the raw data and communications are logged to a robust, fault-tolerant file server. Next, raw data is inserted into a database for easier reporting and redundancy. Finally, the raw data is processed through a strict set of quality control and reduction algorithms, and these processed data sets are stored in a separate database for easy presentation on our websites in map and graphical formats.

×Data Center Security

Physical access to equipment at the data center facility requires technicians to pass multi-layer security control procedures. Entrance to the facility requires a security badge scan and biometric palm-reader scan. Inside the facility a combination door lock must be opened to gain access to WindX hardware equipment. Staff monitors physical access 24x7 by closed-circuit video and alarms. The internal network at the data center is protected by a firewall and intrusion detection/prevention hardware appliances. Remote administration is done through secure encrypted terminal software over a secure encrypted hardware-level VPN tunnel. Software security is monitored through a suite of custom integrated host-based intrusion detection systems. The latest security scanners are used to monitor open ports, filesystem changes, and scan for known vulnerabilities.

×Final Archival Storage

The data is regularly archived offsite by compressing and transmitting the raw logs to a geographically separate facility through a secure, encrypted VPN tunnel. The data is stored automatically on hard drives and periodically written to removable optical media.