Hi-protocol Fibre Channel, which is the basis SAN, you can send blocks of data at speeds up to 4 Gbit / sec. at distances up to 100 km. These characteristics allow you for synchronous data replication to a backup data center.
The valid period of recovery efficiency of IP also determines which of the regimes – a hot standby (hot standby) or as a gradual recovery (gradual recovery) – must operate redundant data centers. Hot backup mode means that the computational power back-up center is ready for action at any time. In this case, the transfer of operations to the backup power can be produced automatically. To use cluster technology, combining server systems primary and backup data centers into a single cluster complex with remote sites.
In addition to duplication of functions, the backup center could be used for partial discharge of computing a set of core data center. In this case, data centers will carry out mutual redundancy, and their resources are used optimally. In addition, backup data center can be used as a test site for training and testing software and hardware, planned for implementation.
Carrying out activities to create redundant data centers, it is necessary in parallel to solve organizational problems involving a number of operational measures for the detection and neutralization of emergencies. Emergency action plan (disaster recovery plan) to transfer information services at a power back-up center and disaster recovery data center core must be formed and perfected in advance. Similar activities should be conducted in case of an emergency at a secondary site.
During the recovery planning, conduct which would be in an accident on the main floor, includes the following:
- Identification of critical functions of the ground data centers
- Prioritizing rehabilitation
- Strategy of rehabilitation
- Verification of the strategy
In order to avoid repeated failures in the future, after elimination of the consequences arising from accidents is necessary to develop a set of measures to analyze the causes of the incident and assess the effectiveness of reconstruction.
Redundant data centers offer solutions that minimizes the risks in the event of various emergencies caused by natural disasters, intentional destruction or distortion of data, errors applied systems, inappropriate actions by service personnel, etc.
Read More : Geographically Located, Redundant Data Centers (Part I)
Read More : Geographically Located, Redundant Data Centers (Part II)
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