Engineering infrastructure of information systems | IT company Pixel

Engineering infrastructure of information systems

 

The uninterruptible power supply system is designed to ensure uninterrupted operation and protection of high-tech equipment in the event of a power failure or its parameters go beyond the permissible limits, thereby ensuring the continuity of the Customer's business.

 
 

Uninterruptible Power System Structures
Distributed structure of an uninterruptible power supply system

 
The main advantages of such a system are:

  • the ability to implement without alteration of network wiring, especially when using "socket" uninterruptible power supplies (hereinafter referred to as UPS);
  • ease of building or changing the configuration;
  • if one of the UPSs fails, only a part of the system is turned off, and if there is one device in the "cold" standby, the consequences of the failure can be eliminated within a few minutes;
  • no special premises are required to accommodate the UPS.

However, the use of this system may be limited by the following factors:

 
  • inefficient use of battery resources;
  • battery life cannot be increased by disconnecting the load from other UPSs;
  • low resistance to overloads caused by erroneous connection of an additional load or short circuit.

Centralized structure of an uninterruptible power supply system

 
The main advantages of such a system are:
  • concentration of power reserve and battery capacity;
  • lower sensitivity to local overloads, withstands short circuits, the transition resistance of which exceeds a certain value determined by the UPS output power reserve;
  • an increase in autonomy is achieved by simply disconnecting less important consumers;
  • elimination of overloads of the neutral conductor at the UPS input, which increases the reliability of the entire power supply network, and does not require reconstruction of the cable lines through which the building is supplied with power.

The use of this system may be limited by the following factors:

 
  • low, in comparison with the distribution system, the likelihood of a local failure, expressed in the de-energization of consumers due to a malfunction of the branched output power supply network;
  • the cost of a possible change in the power supply network in case of reconstruction of the existing system;
  • allocation of special premises and qualified personnel.

In its pure form, each of the considered systems is rarely used. The use of a centralized system is advisable when the concentration of equipment that performs a single task and consists of components of the same reliability class and the same energy consumption characteristics.

For optimal investment spending, a two-tier system is used, which is a combination of a centralized and distributed system. The task of optimizing such a system in terms of power and cost of equipment consists in determining the most responsible consumers and minimizing the number of consumer groups by appropriately configuring the local computer network.

When choosing a two-tier structure, in addition to installing one high-capacity UPS (or a set of parallel-functioning UPSs), some are protected using local UPSs of lower capacity. The goal is to protect equipment such as file servers, LAN management workstations, communications equipment, communications systems from power outages due to cable failures within a building.

Technical specifications

  • power 1 kW - 2 mW;;
  • on-line topology with double conversion;
  • Efficiency 90-96%;
  • scalability;
  • remote monitoring.

Technologies
When creating an uninterruptible power supply system, RittalRimatrix solutions - PMC 200, PMC 120, PMC 40, PMC 12, APCInfraStruXure - SymmetraOdin are used. Symmetra PX, Smart VT, Smart UPS.

 

The guaranteed power supply system is designed to ensure uninterrupted operation and protection of high-tech equipment in the event of a power failure or its parameters go beyond the permissible limits, thereby ensuring the continuity of the Customer's business.

The division of loads by type allows you to reduce the load on the uninterruptible power supply (UPS), which, in turn, increases the battery life of the UPS in emergency mode and makes it possible to use a UPS with a lower capacity.

In this case, the UPS provides galvanic isolation between the power supply networks of computer and communication equipment and the power supply network of technological equipment (in particular, air conditioning systems). This makes it possible to significantly reduce the level of interference in the protected power supply network when switching on and off equipment characterized by a non-linear type and large starting values of current consumption.

 

System composition

 
  • diesel generator set;
  • automatic transfer switchboard;
  • uninterruptible power supply (hereinafter UPS).

Electrical load types

 
The electrical load of the guaranteed power supply system can be conditionally divided into two types:
  • The first type includes the load from equipment that requires power supply with consistently high power quality indicators, as well as those that do not allow (according to the conditions of the technological cycle) power interruptions. This type includes the load from computing equipment, communication systems, active network equipment, video surveillance equipment, alarms, medical equipment. Consumers in this group are connected to the UPS output.
  • The second type includes the load from equipment that does not require consistently high quality indicators of electricity and allows a short break (30-120 seconds) in the power supply. This load is connected directly to the output of the diesel generator set. This type includes the load from the emergency lighting system, air conditioning equipment, as well as a complex of security equipment and other equipment protected by local UPS.

Technologies

 
Diesel generator sets manufactured by Himoinsa are used to create the power supply system.
 
Technical specifications
  • engines Iveco, Scania, Volvo, MTU, Mitsubishi, etc.;
  • power 20 kW - 2.5 MW;
  • open version, in a casing, mobile in a casing;
  • remote monitoring.

 

Modern high-tech computing and telecommunication equipment is sensitive to the smallest changes in the environment. A prerequisite for ensuring its normal performance is maintaining strictly defined temperature conditions and humidity levels. The air conditioning system for such facilities must be highly reliable and ensure the continuous maintenance of the optimum temperature, humidity and air purity in the room. This is especially true for data centers, without which it is impossible to imagine modern business.

The industrial air conditioning system (hereinafter referred to as IACS) is designed to maintain the required parameters of the microclimate of the IT equipment of data processing centers, communication operators' nodes, centers of Internet service providers, hosting centers, various TV and radio transmission stations and other information technology facilities.

The main source of cold for all types of IACS can be either a freon system with direct cooling and a remote condenser, or a chiller (liquid) cooling system.

The type and composition of the IACS is determined at the stage of developing a technical solution, taking into account the capacity of the cooled equipment, requirements for reliability, efficiency, scalability and controllability of the system, design and technological limitations, investment volumes and implementation timeframes. When choosing equipment, preference is given to innovative developments of leading manufacturers of climatic technology, providing energy-efficient cooling of IT equipment.

IACS architecture

 
By its architecture, IACS can be divided into three main types that provide cooling:
  • at the hall level;
  • at the row level;
  • at rack level.

Room-level cooling involves one or more precision air conditioning systems operating in parallel, which not only provide cooling to the equipment, but also act as a large mixer that mixes the air in the room to achieve a uniform average temperature and prevent localized hot spots.

In row-level refrigeration architecture, air conditioners supply cold air to the space between the rows. The equipment is located on a hot / cold aisle principle, which makes the air circulation predictable and allows the full rated cooling capacity of the air conditioning system to be utilized.

When cooling at the rack level, the air conditioning units are structurally connected to the rack, which initially presupposes a high density and power of IT equipment. The air circulation paths in this architecture are clearly defined and do not depend on the characteristics of the room. Using this cooling method allows the deployment of equipment with a total consumption of over 30 kW in a single rack.

Technologies
When creating an industrial air conditioning system, innovative developments and solutions from leading manufacturers of climatic equipment - Emerson Network Power, Rittal, APC by Schneider Electric, Stulz - are used, providing effective cooling of IT equipment with a capacity of several kilowatts to several megawatts.

Technical specifications

  • cooling capacity from 5 kW to 1.2 MW;
  • precise control of temperature and humidity of the cooled air;
  • optimization of useful performance for changing loads;
  • application of modern technologies to improve energy efficiency;
  • redundancy of system components to increase fault tolerance;
  • scalability;
  • remote monitoring of the system state.

 

The system for monitoring and managing the engineering infrastructure of a data center is a software and hardware complex designed for remote collection of information on the state of equipment of various subsystems, as well as environmental parameters (temperature, humidity, smoke), in order to respond quickly in case of emergencies ( fire, accident, penetration of unauthorized users).

The use of a monitoring and control system helps to eliminate the problems associated with the operation of the engineering infrastructure of the data processing center, increases the reliability of equipment operation, and also reduces the response time to an event.

The use of a monitoring and control system greatly simplifies the process of administering engineering systems of a data processing center, allowing you to quickly receive information about the state of all systems at a given point in time.

Capabilities

  • tracking changes in the operation of infrastructure and preventing possible failures;
  • prompt fixing of the problem in the functioning of the IT infrastructure components;
  • determining the exact location and nature of the failure.

Technologies

 
When creating a monitoring and control system, solutions are used by RittalRimatrix – СМС-ТС 3rd generation, Rizone 2.0, APCInfraStruXure –NetBotz, ISXCentral.
 
Technical specifications
  • network connectivity Ethernet interface according to IEEE802.3 via 10 / 100BaseT Fullduplex;
  • provides monitoring via basic protocols: TCP / IP, SNMPv1, SNMPv3, Telnet, FTP, HTTP, HTTPS, NTP, SSH, DHCP, SFTP, SMTP, PPP;
  • the ability to connect third-party equipment.