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Typical Case of IDC Data Center Intelligent Cabling System

一  IDC Cabling System Layout Characteristics

IDC is the Internet data center, and the main application areas of IDC hosting are website publishing, virtual hosting, and e-commerce. It has rapidly developed along with the continuous development of the Internet. IDC is not only the center of data storage, but also the center of data circulation. It should appear in the Internet where data exchange is most concentrated. IDC is a result of people's higher requirements for hosting and virtual hosting services. It is a product of more detailed division of labor in Internet companies.

With the rapid growth of the IDC market, More challenges push the public cloud become increasingly attractive to small and medium-sized customers due to its rapid deployment, expansibility, and low price. Reaching 2 times of traditional IDC custody business. The traditional IDC hosting market is facing unprecedented challenges; customers' requirements for security and availability have also gradually increased with the development of cloud computing. In order to reduce the huge risks caused by the traditional data center downtime, building sectional data center with integrated management had been the future trends


The importance of the integrated wiring system as the physical channel for data transmission is self-evident. When planning and designing, it is necessary to fully consider the application requirements and development trends of IDC, while ensuring the stability and reliability of existing systems, taking into account the future expansion and upgrading. The traditional IDC data center cabling system generally considers the following points:

High reliability: The stability and security of the data center are the most important. Any interruption of business will cause major economic losses and serious social impact. The system architecture should adopt a higher level cabling scheme under the planning requirements of the data center standard TIA-942-A, including the product performance, installation process, and fire retardant capability.

High scalability: With the endless number of new technologies and applications on the Internet, the installed capacity of servers has grown rapidly and the bandwidth requirements have become higher and higher. Part of the redundancy must be considered when designing the cabling system, while the cabling product has certain extended capabilities.

High utilization: The density of cabinets keeps increasing, and the number of servers supporting a single cabinet is greatly increased. While the cabling system adopts a high-density solution, how to make full use of spare redundant links and switch the ports in time can maximize the data transmission channel. The load capacity is already one of the important manifestations of IT operation and maintenance management capabilities.

High immediacy: IDC has a large number of managed services. The number of customers of different levels is numerous. The main tasks of daily operation and maintenance are the work order task and alarm handling. The physical link and its corresponding port of the cabling system must be quickly searched and located to be effective. Guaranteed links for timely communication and data transmission.

The traditional cabling system has been unable to effectively and fully meet the new operation and maintenance requirements of the high-level IDC data center. As a result, the highly efficient intelligent cabling management system will be increasingly introduced IDC integrated cabling system solutions. The intelligent wiring management system is composed of software and hardware. Without changing the wiring structure, the real-time connection status of the jumper is monitored through the active module, which improves the efficiency of the operation and maintenance management, reduces the cost and time for human maintenance, and is timely. Effectively guarantee the rapid realization of business applications.


二 IDC Data Center Intelligent Cabling System Management

An IDC Managed Data Center adopts the standard design and construction of ANSI&TIA-942 Tier4, a new generation of composite data center integrating DC, Telehuose, DR, NOC, SOC and other services; independent school, 6-storey building, 7-level earthquake resistance, total area 13,000 square meters, of which 5 floors and 6 floors are office areas, 1 floor (including power zone) to 4 floors are production areas, about 1500 cabinets; power SLA promises up to 99.995%; professional (non-outsourced) operators more than 100 people, Support disaster recovery in different cities in the same city and have a sound safety management system.

At the beginning of the design of the project, the non-intelligent common wiring system was adopted. As the project infrastructure was gradually completed and the customer's intention to negotiate and move forward raised higher service requirements, the operator realized that the traditional manual management and maintenance mode was inefficient, and in order to improve services. Grades and brand effects improve management efficiency and save operating costs. The operator decides to change the design of the data center cabling system, adopts an intelligent cabling system, uses an electronic distribution frame, replaces the traditional ordinary non-smart patch panels, and cooperates with intelligent cabling system software. Realize the monitoring of the basic physical wiring, thus making up for the last short board-physical layer monitoring of the network OSI seven-layer model monitoring and management. With an electronic software platform and patch panel port LEDs, maintenance personnel can quickly reduce physical fault coverage, reduce troubleshooting time, improve overall maintenance efficiency, and help maintenance personnel relieve themselves from traditional cumbersome and time-consuming manual operations. come out.

The project has two operators accessing the data center on the first floor and the first floor of the project. The two access data centers use 96-cell 10G OM3 fiber-optic cables to interconnect. There are 7 weak data centers from Layer 1 to Layer 4 and two access data. Each center is equipped with a 48-cell 10G OM3 optical cable for each weak data center. The weak data center on each floor is equipped with 1600 core optical cables and 800 copper cables at its corresponding column headings. By horizontal cabling to customer cabinets, an average of 8 core fiber optic cables and 4 copper cables are deployed per customer cabinet. Regardless of late-stage capacity expansion, the current access to the data center to the weak data center is 768-core optical fiber cable (including interconnections), and the backbone of the weak-to-power data center to the column cabinet is 11200-core optical fiber cable, 5600 copper cables, the same from the front cabinet to the customer cabinet. 11200 core optical cable, 5600 copper cables. From the access data center to the column head cabinet, the operator is responsible for maintenance. The customer cabinet is mainly maintained by the customer himself or jointly with the operator.

The IDC managed data center's focus on physical link maintenance is the addition of physical links and link troubleshooting. By assigning the existing idle link, the jumper is connected to complete the work order task, and at the same time, the alarm is cleared by switching the link and plugging the jumper. The entire link channel is maintained by both the operator and the customer. Therefore, it is easy to cause communication difficulties during maintenance and even to distinguish between responsibilities. This greatly increases troubleshooting time.

Therefore, in order to improve the overall maintenance service quality, reduce the risk of failure and labor costs, and fully consider the rate of return on investment, from the following three aspects of the selection evaluation, and ultimately the project decided to use Rosenberg intelligent wiring system.



三  IDC Data Center Intelligent Cabling Structure

1 Electronic patch panel wiring structure

There are two main wiring structures for electronic patch panels: single-shelf and dual-shelf architectures. The single distribution type adopts the electronic distribution frame instead of the original normal distribution frame, which is mainly the port type electronic distribution frame, and the number of the distribution frame is unchanged, and then is connected to the switch through the jumper. The main object of routine maintenance operations is the jumper from the switch port to the power port. When connecting, the jumper must first jump to the switch port and then jump to the power distribution port. However, the power distribution system can only sense the connection through the triggering of the power distribution port. The switch port at the other end must confirm the connectivity and the software must pass the SNMP immediately. The state of the protocol from the MIB of the switch to the switch port changes from Down to Up, and the port obtains the MAC address of the terminal device. The switch is required to have the SNMP function and is turned on, allowing the power distribution software to read the MIB information. Therefore, there is also a certain risk in management. If there are multiple links at the same time, it is easy to cause misjudgment. When you remove or change the jumper, you must also remove the power terminal and remove the switch. Once the link is interrupted, the non-wire itself is connected to quality problems, such as removing the switch jumper first, the switch port being damaged, the terminal server being down, or the server jumper removed, the software can not identify and help maintenance personnel to narrow down the fault.


Double-shelf structure Based on the single-electronic distribution frame, an electronic distribution frame mapping switch is added. The electronic distribution frame and the switch are connected through a non-smart jumper, and the dual-arrangement structure will be the object of daily operation and maintenance. The switch port to the racking port is changed from the rack port to the rack port, and the connectivity at both ends of the jumper is immediately detected.

In this way, normal jumper insertion and removal operations can be monitored to avoid the situation that the single rack structure can only monitor one end, which improves the reliability and efficiency of management as a whole and truly realizes the electronic management of maintenance operations.

2 Electronic Patch Panel Inspection Technology

There are many kinds of detection technologies for electronic distribution frames. Different manufacturers have different technologies and connection architectures. They are mainly divided into two types: port type and link type. The port type is divided into port sensing type (such as electronic micro switch, infrared sensing) and port identification type (such as RFID, CPID); the link type is mainly divided into nine-pin link type and ten-pin link type.

The port-sensing type mainly depends on the physical sense of the patch panel connector to determine the plug-in condition of the jumper, and it is detected by the trigger mode. The advantage is that the structure is simple, the cost is relatively low, and an ordinary 8-core jumper can be used. The disadvantage is that it is easy to cause misjudgment. Other types of jumpers or even other objects (such as fingers, crystal heads, etc.) are mistakenly judged as the actual jumpers required to report to the software platform; because only the detection port, only the two ends of the jumper can be detected. The connector cannot be used to detect the cables of the jumper itself. During the plugging and unplugging operation, the two ends must be inserted and removed one by one. Otherwise, inserting the same end of the two jumpers at the same time will be misjudged as the ends of the same jumper. Jumper relationships must be physically physically jumpered when the database is initially set up, otherwise it is difficult to find out later in the error.



The port identification type mainly uses the reader of the distribution frame port. When the jumper is installed, read the chip information preset on the joints at both ends of the jumper to establish the jumper connection relationship. The advantage is that there is a large amount of information storage, and you can customize the basic information about ports, links, and jumpers. The disadvantage is that the cost is relatively high. To install a chip at the end of the jumper, you can only detect the joints at both ends of the jumper. You cannot detect the cables of the jumper itself. When inserting or unplugging, you must plug and unplug the two ends of the jumper. Otherwise, inserting the same end of two jumpers at the same time will be misjudged as the ends of the same jumper. 


Link type mainly adopts 9-pin or 10-pin module and jumper. Through an additional Pin , a detection loop is formed. The detection signal is transmitted to the scanning module through the loop and then reported to the software platform. The greatest advantage of the link type is real-time online monitoring. Through the comparison and detection method of the database, the plug-in connection can automatically identify and perform corresponding alarms under any circumstances. At the same time, you can batch jumper jumper operation, all the instructions through the LED lights, do not worry about jumping the wrong port. When a batch is jumpered, you can first perform the task and then perform a physical jump connection. You can also batch physical jumper, and then confirm through the software alarm platform to eliminate the alarm confirmation connection. In addition, the smart jumper itself also has a certain detection function. Once the jumper is broken by external force, it also affects the detection circuit and generates an alarm immediately.


In addition, the 9-pin link type and the 10-pin link type not only differ in structure, but also have different scanning methods for the power distribution. The 9-pin jumper uses a non-standard RJ45 crystal head to add additional probes; the 10-pin jumper uses a standard RJ45 plug to add 2 probes for detection at the 0Pin and 9Pin positions on both sides of the standard 8-pin. The corresponding RJ45 module also adds 2 pins. The 9-pin link type system adopts the single-chip microcomputer serial scanning method, adopts the scan-by-scan method for the distribution frame, and the scanning cycle is longer, generally at least several minutes; the 10-pin link type system adopts the chip-type parallel scanning method and supports 24 channels. Scan at the same time, the scan cycle is short and can be completed in a few seconds.


 3 Electronic Patch Panel Distribution Structure

The deployment mode of electronic Patch Panel is divided into two major categories: serial and parallel.

The serial mode is often referred to as a daisy-chained bus structure. Active monitoring devices generally use a single-chip microcomputer processing method to serially connect the number of electronic distribution frames one by one through a serial cable. Such a connection structure is relatively simple, reducing the number of active control devices, but the reliability has certain risks. Once any node fails, it will affect the subsequent electronic distribution frame connection communication. At the same time, the power supply requirements of the electronic distribution frame increase. Generally, 3 to 4 electronic distribution frames require an additional power module. When the signal is polled, it can only be scanned through a daisy-chain, one-by-one, single electronic patch panel. The entire scan cycle may take several minutes to complete.


The tree topology used in parallel mode, the active monitoring equipment adopts the chip processing method, providing 12 or 24 management ports to manage 12 or 24 electronic distribution frames respectively, and the signal processing of all electronic distribution frames adopts concurrent connection methods. This method is highly reliable, and in the event of a failure, the scope of the impact is small. Usually a polling cycle may take only a few seconds to complete, while the active monitoring device provides PoE power to the electronic distribution frame, reducing the use of power modules. Active monitoring equipment manages and maintains the network through IP access, reducing the waste of switch ports and IP resources. If you do not use active monitoring equipment, all electronic distribution frames need to be assigned an IP address that can be identified through the switch port, which imposes an additional burden on the overall network management.




4 The IDC Data Center with Rosenberg Intelligent Wiring Management Solutions

Rosenberg's second-generation intelligent wiring management system Pyxis-II, including monitoring host, management unit, optical / copper electronic distribution frame, optical / copper intelligent jumper and OMC cabling management software. Pyxis-II still uses the double rack structure with ten-pin link technology. Compared with Pyxis-I, the monitoring host is added to the hardware, and the software is also optimized and upgraded.


In this case, the deployment structure of Pyxis­-II intelligent cabling management system is as follows:

● The monitoring host is usually deployed in the MDA or HDA wiring closet to monitor the management unit. After the IP address is configured on the front LAN port, the IP address is accessed to the user management network. The monitoring data is reported to the OMC cabling software, and the software work order task is delivered to the management unit. A monitoring host can monitor 24 management units. If the number of network ports exceeds the number of management ports of a single monitoring host, hosts can be added as needed. The OMC cabling management software can manage multiple hosts, and software and hardware design can enable users to implement There is no need for scale to expand as needed. In this case, two monitoring hosts are actually used to manage 40 management units. Some links will be added later according to customer needs, so the corresponding monitoring host, management unit, and electronic distribution frame will also be added later.

● The management unit is mainly deployed in the HDA wiring closet to monitor the electronic distribution frame in the wiring closet or in the adjacent HDA wiring closet. The management unit comes with an LCD display and buttons for link viewing and related operations in the field. A management unit can monitor 24 electronic distribution frames. This case currently uses 40 management units, distributed in 20 HDA distribution cabinets to monitor 600+ optical/copper electronic distribution frames.

● The optical/copper electronic distribution frame is deployed in the MDA or HDA distribution cabinet. The double distribution structure replaces the original single distribution frame. The copper electronic distribution frame contains 24 ten-pin RJ45 modules and active scanning modules. The RJ45 module can be disassembled separately. The active scanning module provides PoE power through the management unit and comes with 24 LED indicators. The optoelectronic distribution frame contains three 24-cell LC interface module sets, which can realize 1HU72 cores, and meet both fusion-type and pre-connection type solutions. The self-contained cable managers are also powered by PoE. Monitoring host, management unit and electronic distribution frame are connected by common RJ45 jumper for connection and communication, and no other interface connection line is required.

● The optical/copper smart jumper has 2 pins more than the normal jumper to monitor the connectivity of jumpers and ports. The smart jumper can be customized for length and color. It is tested at the factory and has a unique SN number. The number of smart jumpers can be configured based on the actual number of links used.

● OMC routing management software only needs to configure one set to satisfy multi-user login, and can grant different permissions respectively. When multiple departments and multiple users simultaneously log in and maintain, they can perform operations such as viewing, work order tasks and so on. The OMC cabling management software uses a graphical cabinet interface. All devices include normal distribution frames. Active devices can be graphically displayed on the software interface. With its own database backup tool, it can send alarms and logs to the network management or push it to a unified alarm platform via email or message. The OMC cabling management software is optimized and upgraded from time to time. For IDC data center maintenance features, jumper number addition and query functions have been added to provide customized development services for specific functions.


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