Monday, June 27, 2011

Building Fault-Tolerant Windows Server 2008 R2 Systems - Powering the Computer and Network Infrastructure

Powering Windows Server 2008 R2 servers and network hardware with battery or generator- backed power sources not only provides these devices with conditioned line power by removing voltage spikes and providing steady line voltage levels, but it also provides alternative power when unexpected blackouts or brownouts occur. Many organizations cannot afford to implement redundant power sources or generators to power the offices, data centers, and server rooms. For these organizations, the best approach to providing reliable power to the computer and network infrastructure is to deploy uninterruptible power supplies (UPSs) with battery-backed power. With a UPS, power is normally supplied from the batteries, which are continually charged by the utility line power. When the line power fails, a properly sized UPS provides ample time for end users to save their data to the server and to gracefully shut down the server or network device without risk of damaging hardware or corrupting data. UPS manufacturers commonly provide software that can send network notifications, run scripts, or even gracefully shut down servers automatically when power thresholds are reached. Of course, if end-user data is important, each end-user workstation and the network switches that connect these workstations to the computer and network infrastructure should also be protected with UPSs that can provide at least 5 to 10 minutes of battery-backup power.

One final word on power is that most computer and network hardware manufacturers offer device configurations that incorporate redundant power supplies designed to keep the system powered up in the event of a single power supply failure.

Source of Information : Sams - Windows Server 2008 R2 Unleashed (2010)

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