Monthly Archives: May 2011

To build nine high server rack should pay attention to what

How to make better use of your data center space? Some companies used to build the method, rather than mere expansion.
Racks and cabinets through the use of more users per square foot can be they will only put more data center space for servers. This approach is often used within the data center lease type, designed to support the higher density of IT facilities.

“Our customers increasingly complex IT deployment, and now they know that the deployment density is the key to how high the rack in the end can take

, “DuPont Fabros Hossein Fateh, President and Chief Technology Officer, said,” You can create a vertical through our standard rack, the rack in building up your post, you no longer need to pay the additional cost. To more effectively, we will create a 9-foot rack. We have just helped a client to complete this deployment.

On average, a standard server rack is 7 feet high and can accommodate 42U rack server equipment in a 19-inch wide slot. There are many kinds of size of the rack to choose from, while the upper limit of the manufacturer’s cabinet width is 23 inches in size (this size typically used for telecommunications equipment), and height ranging from 44U to 58U.

High rack allows you more space to deploy additional server equipment, but also can improve the heat dissipation problem. Especially when the rack is completely full, 9-inch high rack to have more advantages. Data centers now face a major challenge is to solve the air-conditioned and the temperature of the rack at the top and bottom of the fluctuations.

Alert data center “hotspots”

Data center floor cooling problem is a has been from the previous problems associated with under-floor cooling equipment must reduce the data center to aid in temperature. “If the underground flow is not strong enough, then there is not enough on the rack cooling air; if the underground flow is too strong, the top of the rack will have two shares of a mixture of hot and cold hot and cold air, resulting in convection.”

Use hot aisle and cold aisle control can prevent the server at this point the heat cycle.

Break the traditional will room and the topological management together

Overview
Network rooms and data centers supporting the modernization of various types of enterprises, the normal operation of production systems, some have even become an unattended room type. In this case, any one of the environmental factors and human error caused the accident to system outages and equipment damage to the enterprises and institutions will be a huge loss. In order to reduce such losses, the user needs a set of advanced and reliable computer room environment monitoring and early warning system to ensure safe operation of equipment. The system must be able to observe at any time the situation room, must be able to issue timely preventive police, informed the officer to take measures to prevent accidents.

Complete three major characteristics of the engine room monitoring system

It can be said, a sound room monitoring system should have three characteristics: the ability to realize the operation from the device to the cabinet room and then to the overall environment of micro-environment such multi-level monitoring; to have a rich set thresholds to monitor the existence of a crisis, and way to have a wealth of early warning and early warning process to ensure that relevant personnel to receive alerts, to early warning purposes; with network, intelligent, able to view the room through the network at any time within the situation.

How

But this is only room management in the traditional sense, with the increasing scale of enterprises, often there will be coexistence of multiple rooms, how to rationalize the relationship between these rooms to facilitate our management of it. First, we topology management module in the engine room in the trunk to create network diagram:

Then the room layout nodes and integrate the engine room.

Finally, environmental monitoring will be related to layout the nodes placed according to the actual situation, and can go directly to the room layout in the monitoring page for more information:

This information related to our room was the organic integration of the topology management, and management will be through the trunk room topological relationship between the visual performance in the user’s eyes.

As the operation and maintenance of comprehensive IT management experts – Mocha software based on the user’s use of the domestic habits of the majority of the engine room, on the basis of network management software, and provides room monitoring and management functions, the module not only supports SNMP-based APC other engine room equipment, such as Intelligent Power Distribution Cabinet (ISX-PDU), networked air-conditioning, power rack inserted row, and environmental monitoring and management equipment, and other UPS manufacturers of equipment. The product has a real-time monitoring, centralized management, asset management, alarm management, log management, battery management, voice \ \ \ \ SMS alarm notification.

KVM switch for the development of the engine room

In recent years, along with the enterprise information construction progresses, the control room as the center of the network platform, expanding the scale of construction, equipment, management of increasingly complex, the system highlights the security issues, management and maintenance of engine room equipment one by one the traditional way has been significantly behind. Among the many room management program, KVM be a good choice.

1 KVM Technology and Development

    KVM is a keyboard, monitor and mouse (Keyboard, Video, Mouse) acronym. KVM systems, is to use a KVM or more sets of different platforms in different locations to switch control between the various hosts. To manage. In order to achieve a user through a keyboard, mouse, and monitor multiple servers to manage day. This is the basic KVM applications. As technology advances. People KVM increasingly demanding applications, there has been further KVM management system. If using a standard CAT cable, through the KVM matrix combination, can be within 300m of KVM server management system, 32-256. Such systems

    Installed on the server does not require any hardware or software, no matter what kind of server based systems and platforms can be managed. BIOS-level access can be done far more than the traditional management software. These not only can manage the server KVM products, but also to manage a variety of applications-line network devices such as switches, firewalls and routers. Can even manage the power system, control equipment, startup and shutdown. And later appeared on TCP / IP protocol of the digital KVM products, the KVM over IP. Further breakthrough in the management of such products from the restrictions, can manage any time, any place, any region can be distributed in an unlimited number of servers in the data room. Giving users a convenient and secure remote management platform. And improve the efficiency of management staff, saving room area and reduce the overall system has a network server into the wood (TCO) and remote maintenance costs.

2 less than the traditional room management

    In recent years, due to the continued construction of enterprise information input, the growing number of network equipment room, increasingly complex topology, a wide range of platforms, systems operation and maintenance management has become a prominent issue, the traditional engine room there are many deficiencies in maintenance mode :

    (1) operation and maintenance, low efficiency, high into the wood. In the past, a host of a keyboard, mouse, and monitor the equipment constitutes a pattern, resulting in system maintenance staff need different devices, constantly switching between different platforms, a single-point maintenance and management, spend a lot of labor costs, and inefficient Moreover, due to duplication of equipment, resulting in a floor space of the waste and environmental clutter.

    (2) there is implicit insecurity. The daily maintenance of the system to operate more, and the common operations accounted for a large proportion. This is not a large number of complex operation to bring V to avoid unnecessary security risks. Require frequent maintenance in and out of rooms, equipment operation also adversely affected.

    (3) Remote management difficulties, the problem is not conducive to the timely response. As system administrators there temporarily away on business and other local circumstances, which need to provide a mechanism for remote management. To ensure that in this case, system administrators can log on the host system in a timely manner, deal with the problem. Remote management of a large current general are based on networks, in the host system and networking interruption. Will fail. On this basis, therefore, also need a backup of remote management tools.

Based on the above issues, in order to improve system operation and maintenance management. The urgent need to change the current mode of operation and management. In addition, centralized management of data from the needs of the future, and disaster recovery set brought much room to manage the requirements, but also the need for transformation of this management model to provide a safe, convenient and centralized management platform. Shenzhen Rui Desi is such an offer made through high-end KVM equipment manufacturers. The company introduced the ISO-9000 management system, all products whether it is USB KVM, PS2 KVM, KVM air plug or DC KVM, KVM exchanges are in line with ROHS standards, passed the CE, FCC and other related certification, China Telecom, China Mobile, China China Unicom, China Satcom, PetroChina, Sinopec, Bank of China, Industrial and Commercial Bank, Agricultural Bank, Construction Bank, ZTE and other professional customers widely used.

3 KVM management of the selection and application of the advantages of room

3.1 How to choose the best KVM room

Companies have chosen to KVM, you should evaluate the following features:

    Cross-platform: in the choice of KVM, it must examine whether the product provides a complete platform compatibility, such as support for PS12 and USB dual interface, as well as PC, MAC, SUN and other platforms, and has independently on different hardware, operating systems and applications program compatibility.

    Scalability: the information world is changing very fast, and yesterday also promote the distributed data centers, today advocating an integrated center. As technology changes and tightening of the IT procurement budget, the flexibility of data center management has become important considerations. So in the choice of KVM solutions must assess whether it can provide a full range of product lines, maximize scalability, multi-platform, supportive, and close connections with the remote access option. In short, the selected KVM should have handled the present and future flexibility of the complexity of IT operations capabilities.

    Connectivity: KVM is now from the previous expensive, bulky and complex cable transmission distance limited shift from the traditional image of distance limitations and can band (out of band) connection to the server a new design. This 7×24 h uninterrupted provision of mission-critical data centers will have flexibility in a variety of connection one by one ‘including up to 300 m away from the standard UTP cable (cat5, cat 5e, cat 6, ca t7), Ip / Web access, and integration of the various connection options. If we can properly use a variety of connections, and technical personnel will be able to comprehensively improve the management efficiency, and can save costs, floor space and reduce the number of management staff.

    Security: When the KVM IP technology began to leave, though the server and client to promote the remote control technology, but also brought other problems, that is, system security issues. Enterprises should establish an important concept: the deployment of the KVM-based III, do not overlook the security issue, and should further strengthen the authentication, login passwords, encryption and other preventive measures.

    To this end, advanced IP-BASED KVM will provide multiple layers of security access control. For example, users first need to get the password through the registration procedures for people, and then must complete the certification audit SHA-1 to allow only authorized administrators to enter the system. To further ensure security, and some models even support the gold key (PKI) mechanism. In addition, all data transmitted through the network have been 128-bitSSL encryption or AES encryption system more advanced protection, so that prospective data theft even if the malicious user access to information can not be read.

    Manageability: In the room, most of the devices are linked together, the devices must go through the software or applications to communicate. And achieve management efficiency. KVM is certainly no exception, so need to provide a variety of software tools for configuration, management, access, control, and time is running daily tracking. So in the procurement of KVM products, must pay attention to its management issues. In addition to providing a complete software applications, the network needs to support centralized management of KVM products, so that users can at any time fault detection, and directly from the desktop or from anywhere in the world to access and manage servers. Even the use of intuitive environment to both view and manage multiple servers.

    Carefully selected partners: the KVM system and is closely related to the stable operation of the engine room equipment, so KVM products in the procurement of long-term cooperation should be carefully selected KVM suppliers.

3.2 KVM management applications in the engine room of the advantages of

    Save space: the scale of development is very fast for the network room, the one previously used the space is relatively limited, and relocation services will result in a standstill. In this case, the reduction of the keyboard, mouse, and monitor the number of additional servers to make a lot of space, after all, a best choice.

    Increase efficiency: engine room equipment in the enterprise is growing, increasing the workload of routine maintenance situation, how can the maintenance personnel freed from the heavy work to become an important issue. Imagine, when the shuttle system or network maintenance personnel and a variety of cabinets in the server is composed of the “jungle”, the search for access to the fault of the machine, its efficiency is how low. And this low efficiency, not only a waste of limited human resources, but also failures lack of timely repair, the network or data center should not have stopped. The KVM solutions achieved by a keyboard, mouse, monitor the composition of all the machines console login. This greatly improves the system or network maintenance staff efficiency, so that failure in the safest, most rapid and timely case solution.

    Room to improve security, ease of management: network control room is the core of the core data in and out of room, there are hidden insecurity (in the financial sector, securities industry, especially government departments). The daily maintenance of the system to operate more, and the common operations accounted for a large proportion of this large complex operation inevitably bring unnecessary security risks. Using KVM system, all operations can be completed in the control room, control room and engine room strictly separate the core data will greatly enhance the room’s physical security.

    May at any time for remote management: As the level of enterprises continuously improve the information technology, data centers and IT staff are often separate office or even off-site, through a remote keyboard, mouse and monitor to achieve the overall system within the engine room remote management, maintenance, system 24 h to ensure continuous, stable operation of an important tool. -Based TCI IP protocol of the KVM product, you can easily on one platform. all equipment within the engine room anytime, anywhere remote control.

With the rapid development of computer application technology, KVM switch has moved from simple hardware switch only functions with the rapid development of highly complex and intelligent control devices, the convenience it provides has made it the key equipment in the room management. The future, KVM Management in the engine room of the road, will be farther and farther, wider and wider. More and more enterprises, government units, which are specified in the project using high-end brand Reton KVM, Xiao Bian sincerely wishes Reton KVM switch also goes farther, KVM industry in China, occupies a seat.

To build nine high server rack should pay attention to what

How to make better use of your data center space? Some companies used to build the method, rather than mere expansion.
Racks and cabinets through the use of more users per square foot can be they will only put more data center space for servers. This approach is often used within the data center lease type, designed to support the higher density of IT facilities.

“Our customers increasingly complex IT deployment, and now they know that the deployment density is the key to how high the rack in the end can take

, “DuPont Fabros Hossein Fateh, President and Chief Technology Officer, said,“You can create a vertical through our standard rack, the rack in the establishment of a good after you are no longer required to pay additional fees. To more effectively, we will create a 9-foot rack. We have just helped a client to complete this deployment.

On average, a standard server rack is 7 feet high and can accommodate 42U rack server equipment in a 19-inch wide slot. There are many kinds of rack sizes to choose from, while the upper limit of the manufacturer’s cabinet width is 23 inches in size (this size typically used for telecommunications equipment), and height ranging from 44U to 58U.

High rack allows you more space to deploy additional server equipment, but also can improve the heat dissipation problem. Especially when the rack is completely full, 9-inch high rack to have more advantages. Today’s data centers face a major challenge is to solve the rack at the top and bottom of air conditioning and temperature fluctuations.

Alert data center “hotspots “

Data center floor cooling problem is a has been from the previous problems associated with under-floor cooling equipment must reduce the data center to aid in temperature. “If the underground flow is not strong enough, then there is not enough on the rack cooling air; if the underground flow is too strong, the top of the rack will have two shares of a mixture of hot and cold hot and cold air, resulting in convection. “

Use hot aisle and cold aisle control can prevent the server at this point the heat cycle.

Choose what kind of wiring system is best

First of all there is to distinguish between two concepts, that is bandwidth (measured in MHz) and data transfer rate (in Mbps measured.) Difficult to distinguish these two concepts to make the right choice. On both the specific meaning of the definition and can refer to relevant technical articles. Here we must point out that the two are related, this relationship is related to the encoding techniques, but not necessarily one to one relationship. For example, ATM155, of which 155 is the data transmission rate, ie 155Mbps, the actual bandwidth is only 80MHz; Again 1000Mbps Ethernet, 4 on the line thanks to the work of full-duplex mode, bandwidth requirements of its only 100MHz. In the computer network industry, widely used is the data transfer rate, and in the cable industry is the bandwidth used, so do not confuse the two.
 

1. Cat5e cable system (Enhanced Cat 5)
It is the existing twisted-pair UTP some five to improve the performance of the system after many performance parameters, such as the near-end crosstalk (NEXT), attenuation crosstalk ratio (ACR) and so has increased, but bandwidth is still 100MHz.

2.6 type cable system (Cat 6)
It is a new class of cable systems, in addition to the parameters are greatly improved, the bandwidth will be extended to 200MHz or higher. Either Category 5 or Category 6 over cable systems, the connection is still widely used and now the module is compatible with RJ45 plug.

3.7 type cable systems
Category 7 cable system is proposed by a cable European standard, the bandwidth of its plans for the 600MHz, but the connection modules RJ45 current form of the structure and completely compatible. It is a screening system.
The three cable systems currently on the progress in standard setting is: super-standard Category 5 systems are expected between November-December this year will be worked out, but Category 6 standard system plan was worked out in the end of 2000, as 7 Standard class systems, ongoing research and discussion in Europe, has not been standardized in the United States Commission on the agenda.
The current network technology to the needs of transmission medium
Installation of network cabling system to meet the application requirements. The speed of the current system requirements on the network, what does? At present, computer network token ring with 4M and 16M, 10M Ethernet, 100M Ethernet (including 100BASE-T and 100BASE-T4) and ATM155 (based on twisted pair), these networks can be in the current Category 5 twisted pair on the run.
Currently the only standard is not determined 1000Mbps Ethernet, that is what it needs to run on the media is unclear. Gigabit Ethernet is currently the final standard has not yet completed, but some basic indicators have been identified, for example, the requirements of its unshielded twisted pair is the use of all four pairs of wire (100BASE-T only two pairs), full-duplex operation, and within the 100MHz bandwidth.
According to the above basic requirements, the user will naturally be concerned about: Since the bandwidth of Gigabit Ethernet is still within the 100MHz, then it can run on Category 5 twisted-pair it? From the current draft standard view, as full-duplex Gigabit Ethernet to run on four pairs of line, so although the bandwidth is still 100MHz, but its performance cable systems raised a number of other new requirements, such as the transmission Delay (Propagation delay), time delay difference (delay skew) and the far-end crosstalk (FEXT) and so on. The most important of these parameters is equivalent to far-end crosstalk (ELFEXT), its well-Gigabit Ethernet can run the most. Users concerned about whether the system is Category 5 cable can run Gigabit Ethernet, I think as long as the Category 5 UTP system worked out by the end of this year to meet the new standards and meet the most important ELFEXT indicator, then it can running Gigabit Ethernet.
The upcoming end of the year what is standard? One standard is the existing Category 5 twisted-pair standard (TSB67) be amended to increase the number of new parameters, such as transmission delay, delay differential, remote crosstalk. If you use this standard to measure 5 twisted pair cable system and passed the test, then the system can run Gigabit Ethernet. Another standard is Category 5e standard, that Cat5E, Category 5 system standards than the indicators are more stringent. If you are installing the system over Category 5 cable passed the certification test, you can certainly run the system on top of Gigabit Ethernet is no problem. Category 6 cabling system standards should be completed before the end of 2000, is currently the standard is still under discussion; but one thing is certain, that is certain to extend its bandwidth to 200MHz or higher.

Faced with the choice of the user
The face of these different cable systems above, the user how to choose? Better approach is to: From the practical application, consider the scope for future development and investment costs to ensure quality of the installation. Reality mean it from the users of network applications currently considering the request of how high, 10M Ethernet can support multi-user application requirements, and 100M Ethernet is long enough. Because the network cabling system is a one-time long-term investment, considering mean it takes into account the future development of the application of the network whether there will be a period of high-speed networks such as Gigabit Ethernet or future higher-speed networks.

The right to make decisions is very difficult, especially the right to judge whether the decision to go to after a few years or ten years is possible. If a company installed a 3 class system in 10 years on the network can meet the requirements of the company, then decided to install the 3 class system can be considered correct; and if the system is installed in the three years after the Category 3 was found to not meet the network application and needs to be updated, then the decision to install the 3 class system, there is a problem. Conversely, if the installation of a very advanced cable systems in 10 years the application of the network is still a 10M or 100M Ethernet-based, then the investment in wiring system may be too large, because 10 years later, the cable system may look like another.
Finally, how to ensure the quality of installation. In addition to the quality of wiring outside the system itself (usually by the manufacturer to ensure, but usually not the main reason for the problem), whether it is Category 3, Category 5, Cat5e or Cat 6 cabling system has to go through construction and installation to complete, construction process on the performance of cable systems play a significant influence. Even if the selected high-performance cable systems, such as super-class of 5 or 6, if the construction quality of the rough, its performance may not reach Category 5 indicators. So, no matter what level choose to install the cable system, the end result must be reached with the corresponding performance, that is required for the installation of the cable system standards certification tests to ensure the reliability of the investment. The current situation is that the system has been certified Category 5 twisted-pair standard to follow, while the super-5 class system introduced in the end of this year there is the standard, as the standard 6 class system is still need to wait.