I often find that physical topology diagrams aren't commonly referenced. These designs are typically based on customized, and sometimes proprietary, application architectures that are built to serve particular business objectives. Much of what is required in your diagram is a function of who will consume it. •GigE or 10 GigE NIC cards—The applications in a server cluster can be bandwidth intensive and have the capability to burst at a high rate when necessary. •L3 plus L4 hashing algorithms—Distributed Cisco Express Forwarding-based load balancing permits ECMP hashing algorithms based on Layer 3 IP source-destination plus Layer 4 source-destination port, allowing a highly granular level of load distribution. This type of design supports many web service architectures, such as those based on Microsoft .NET or Java 2 Enterprise Edition. Although Figure 1-6 demonstrates a four-way ECMP design, this can scale to eight-way by adding additional paths. •Scalable server density—The ability to add access layer switches in a modular fashion permits a cluster to start out small and easily increase as required. It is based on the web, application, and database layered design supporting commerce and enterprise business ERP and CRM solutions. Most of these tools rely on device discovery to build accurate network maps and determine traffic flow. While IBM's Token Ring is a logical ring topology, it is physically set up in a star topology. The following diagram shows the logical components that fit into a big data architecture. Diagram Example Visio Logical Data Center Diagram; 86 Cj7 Distributor Wiring Diagram Honda Accord Starter Wiring Diagram 2003 Jeep Grand Cherokee Fuse Box Diagram Peugeot 206 Gti Wiring Diagram Basic Ignition Wiring Diagram Dodge Alpine Iva D300 Wiring Diagram 2002 Suburban Radio Wiring Diagram –The source data file is divided up and distributed across the compute pool for manipulation in parallel. For more details on security design in the data center, refer to Server Farm Security in the Business Ready Data Center Architecture v2.1 at the following URL: http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/ServerFarmSec_2.1/ServSecDC.html. However, consider defining the subnet used for VIPs in general in the diagram, so you can quickly identify and locate it. Server-to-server multi-tier traffic flows through the aggregation layer and can use services, such as firewall and server load balancing, to optimize and secure applications. The data center infrastructure is central to the IT architecture, from which all content is sourced or passes through. So while any data flow diagram maps out the flow of information for a process or system, the logical diagram provides the “what” and the physical provides the “how.” Typically, the following three tiers are used: Multi-tier server farms built with processes running on separate machines can provide improved resiliency and security. This mesh fabric is used to share state, data, and other information between master-to-compute and compute-to-compute servers in the cluster. Discovery is not always a perfect process and the tool can be misled or blocked by devices like firewalls or other security appliances. In the modern data center environment, clusters of servers are used for many purposes, including high availability, load balancing, and increased computational power. •Common file system—The server cluster uses a common parallel file system that allows high performance access to all compute nodes. Before implementation, data center layout is usually created with a data center map or diagram. The advantage of using logical segregation with VLANs is the reduced complexity of the Only include relevant information. The valuable information from a physical diagram lies mostly in interface cross connects, which administrators can easily glean from other places, such as the switch configuration. While this sounds appealing, it's not without issues. Diagram Example Visio Logical Data Center Diagram; Polaris Rzr 900 Parts Diagram 1995 Honda Accord Fuse Box Diagram Pdf 2005 Malibu Evap Wiring Diagram 2007 Lincoln Town Car Wiring Diagram Massey Feguson Tractor Ignition Switch Wiring Diagram Mazda 3 Wiring Diagram Headlights Schematic Block Diagram View with Adobe Reader on a variety of devices, Server Farm Security in the Business Ready Data Center Architecture v2.1, http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/ServerFarmSec_2.1/ServSecDC.html, Chapter 2 "Data Center Multi-Tier Model Design,", Chapter 3 "Server Cluster Designs with Ethernet,", http://www.cisco.com/en/US/products/ps6418/index.html, Chapter 3 "Server Cluster Designs with Ethernet", Chapter 3 "Server Cluster Designs with Ethernet. The logical data center network diagram easily shows which VLANs are relevant to which devices and device contexts or VRFs. Copyright 2000 - 2020, TechTarget Later chapters of this guide address the design aspects of these models in greater detail. The Cisco SFS line of Infiniband switches and Host Channel Adapters (HCAs) provide high performance computing solutions that meet the highest demands. –Applications run on all compute nodes simultaneously in parallel. Featured Visio Templates. In the enterprise, developers are increasingly requesting higher bandwidth and lower latency for a growing number of applications. Network diagrams, both logical and physical, are key to effective network and IT infrastructure management. Example Visio Logical Data Center Diagram. Check out this recap of all that happened in week one of re:Invent as you get up to... After a few false starts, Google has taken a different, more open approach to cloud computing than AWS and Azure. Ask any network engineer what their least favorite task is, and most will refer to documentation. For more information on Infiniband and High Performance Computing, refer to the following URL: http://www.cisco.com/en/US/products/ps6418/index.html. Figure 1-3 Logical Segregation in a Server Farm with VLANs. –Middleware controls the job management process (for example, platform linear file system [LFS]). This is not always the case because some clusters are more focused on high throughput, and latency does not significantly impact the applications. While diagramming tools can prove useful, I find that many of my network diagrams are relatively static and require little work to keep current. The multi-tier model is the most common design in the enterprise. The server cluster model has grown out of the university and scientific community to emerge across enterprise business verticals including financial, manufacturing, and entertainment. All clusters have the common goal of combining multiple CPUs to appear as a unified high performance system using special software and high-speed network interconnects. •Compute nodes—The compute node runs an optimized or full OS kernel and is primarily responsible for CPU-intense operations such as number crunching, rendering, compiling, or other file manipulation. Diagram Example Visio Logical Data Center Diagram; Clarion Vrx815 Stereo Wiring Diagrams Cobalt Silicon Phase Diagram Start Wire Diagram Arctic Cat Jag 440 Manual Lennox 51m33 Wiring Diagram 6 Pin Toggle Switch Wiring Diagram 2015 Ford Transit Fuse Box Diagram Lutron Ecosystem Ballast Wiring Diagram Resiliency is achieved by load balancing the network traffic between the tiers, and security is achieved by placing firewalls between the tiers. Privacy Policy •Storage path—The storage path can use Ethernet or Fibre Channel interfaces. virtual machines and operating systems), and networks. One or more physical data models can be developed based on a logical data model. –This type obtains the quickest response, applies content insertion (advertising), and sends to the client. This is typically an Ethernet IP interface connected into the access layer of the existing server farm infrastructure. The following applications in the enterprise are driving this requirement: •Financial trending analysis—Real-time bond price analysis and historical trending, •Film animation—Rendering of artist multi-gigabyte files, •Manufacturing—Automotive design modeling and aerodynamics, •Search engines—Quick parallel lookup plus content insertion. In the past, I’ve discussed how our IT documentation software netTerrain helps users discover and map the network as well as access up-to-date network diagrams. Figure 1-2 Physical Segregation in a Server Farm with Appliances (A) and Service Modules (B). For a sample of how to document connections between a 48-port switch and devices located in other racks, download Data Center Wiring Demo.xlsx. •Access layer—Where the servers physically attach to the network. Non-intrusive security devices that provide detection and correlation, such as the Cisco Monitoring, Analysis, and Response System (MARS) combined with Route Triggered Black Holes (RTBH) and Cisco Intrusion Protection System (IPS) might meet security requirements. If you call OpenFlow or VMware's NSX SDN, then the diagram would resemble any normal one. The layered approach is the basic foundation of the data center design that seeks to improve scalability, performance, flexibility, resiliency, and maintenance. Do Not Sell My Personal Info. The advantage of using logical segregation with VLANs is the reduced complexity of the server farm. Numerous tools are available that can not only create network diagrams, but also keep them up to date. Top 8 Things You Need to Know When Selecting Data Center SSDs. A physical network diagram describes the hardware connectivity. The multi-tier approach includes web, application, and database tiers of servers. Mechanics Diagrams (Spring, pulleys, etc.) 1. •Aggregation layer modules—Provide important functions, such as service module integration, Layer 2 domain definitions, spanning tree processing, and default gateway redundancy. •HPC type 2—Distributed I/O processing (for example, search engines). This chapter defines the framework on which the recommended data center architecture is based and introduces the primary data center design models: the multi-tier and server cluster models. Visio lets you include external sources and destinations for the data, activities that transform the data, and stores or collections where the data is held. The multi-tier data center model is dominated by HTTP-based applications in a multi-tier approach. The smaller icons within the aggregation layer switch in Figure 1-1 represent the integrated service modules. Learn about the 3 stages of a Data Model Design- Conceptual Data Model- Logical Data Model- Physical Data Model It's all about depicting things logically in the end. The file system types vary by operating system (for example, PVFS or Lustre). These web service application environments are used by ERP and CRM solutions from Siebel and Oracle, to name a few. Fibre Channel interfaces consist of 1/2/4G interfaces and usually connect into a SAN switch such as a Cisco MDS platform. •Distributed forwarding—By using distributed forwarding cards on interface modules, the design takes advantage of improved switching performance and lower latency. The layers of the data center design are the core, aggregation, and access layers. Application data stores, such as relational databases. Cisco Guard can also be deployed as a primary defense against distributed denial of service (DDoS) attacks. The recommended server cluster design leverages the following technical aspects or features: •Equal cost multi-path—ECMP support for IP permits a highly effective load distribution of traffic across multiple uplinks between servers across the access layer. Data center security: Defense against the IT dark arts, Prevent network bottlenecks caused by storage upgrades. The remainder of this chapter and the information in Chapter 3 "Server Cluster Designs with Ethernet" focus on large cluster designs that use Ethernet as the interconnect technology. Web and application servers can coexist on a common physical server; the database typically remains separate. The firewall and load balancer, which are VLAN-aware, enforce the VLAN segregation between the server farms. Gigabit Ethernet is the most popular fabric technology in use today for server cluster implementations, but other technologies show promise, particularly Infiniband.