NEC Express 5800 Quick Start Manual

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NEC Express5800 Fault Tolerant Virtual Server Quick Start Guide 4STEP 1: Install the HardwareYou must ensure that you have the necessary hardware to create your virtual machine solution and that youhave installed it correctly. Infrastructure solutions that use Microsoft Virtual Server 2005 R2 SP1 run multiplevirtual machines on a single physical server. Because this type of solution runs multiple servers on a singlepiece of hardware, it is important to make sure that you configure the hardware correctly.An FT Server provides your virtual solution with hardware fault tolerance and performance. To use the faulttolerance built into the NEC servers, you must configure the hardware components correctly. Specifically, toprovide redundancy for network connectivity, you must install multiple network adapters. In addition, to maintainoperation in the event of a power outage, you must configure the power inputs correctly.Connecting to the NetworkAll of the virtual machines that run on the server rely on the same network connectivity for client connection tothe services and applications that the virtual machines provide. Because a failure in the network connectivity ofthe server has an impact on a large amount of network functionality, you must include fault tolerance fornetwork connections.To provide fault tolerance for network connections and to enhance performance, configure the networkadapters into teams. In a network adapter team, one adapter is the primary or active adapter and all otheradapters are secondary or backup adapters.If the active adapter fails in a fault tolerant team, the backup adapter becomes active and seamlessly continuesoperation. In a performance team, network traffic distributes between the adapters. In addition to increasingperformance, a performance team can also provide fault tolerance if an adapter fails.You are going to create an Adapter Fault Tolerant (AFT) team. The Guide describes the configuration of AFTteams in STEP 3: Configure the Server Hardware. For now, we are going to connect the network adapters tothe network and create an AFT team.To connect the embedded Ethernet controllers to the network:1. Provide an unshielded twisted pair (UTP) cable with RJ-45 connectors for each of the four Ethernetadapters.2. Install the Ethernet adapters in pairs, one in the same numbered slot in each module. For example,for the first team, install an adapter in slot one in each module.3. Connect one end of each cable to a network port on the server and the other end to a switch.The following sections explain the different types of network adapter teams.Adapter Fault Tolerant TeamsAn AFT team is a set of two or more network adapters that provide redundant connections to a single switch. Inan AFT team, a single adapter is active on the network until a failover occurs (usually caused by failure of theadapter); at this point, a secondary adapter becomes active.In an AFT team, both adapters connect to the same switch. Therefore, if the switch fails, both adapters becomeunavailable, and network connectivity is lost.Figure 3 shows an AFT configuration and the outcome of adapter and switch failure.