BlueNet PDUs

Technical essays of current IT-relevant topics: Here you can download our whitepapers.

Residual-current analysis: Predicting failure risks using big data in the cloud

Safe and reliable operation of a data centre’s electrical system can be guaranteed by a combination of regular maintenance intervals and a superordinate management system comprising residual-current monitoring and targeted analysis of measured values. On the one hand, regular maintenance work forms the prerequisite for component or system longevity, yet on the other, represents an immense cost factor. New concepts are emerging on the market, and the IT sector is following trends in the automotive industry. Leading car manufacturers dispensed with fixed maintenance intervals long ago, preferring sensors which determine the exact condition of brake or clutch pads. The vehicle information system lets the driver know in advance when their vehicle needs maintenance or worn parts must be replaced. In addition, independent repair shops are now authorised to perform maintenance on vehicles. As such, customers have the advantage of choosing a low-cost, time-optimised solution. So why not apply the same principle to data centres?

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PDU with Master-Slave Array: Cost-efficient network design

Modern data centres provide the core infrastructure for a vast amount of activities and processes both in the private and business environment. These include email or IP telephony communication, modern ERP systems (ERP = Enterprise Resource Planning) or procedures at production plants based on the Industry 4.0 standard. Networking of IT applications right down to industrial production has meant that not only is 100% availability vital, efficient network planning and administration are also an absolute necessity. Reducing the number of IP ports and the assigned IP addresses helps to reduce annual costs substantially.

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Redundancy and monitoring at rack level: A safeguard against failures in data centres

When the word “redundancy” is uttered, many IT professionals will immediately think of N+1-redundant UPS and CRAC units, or of multiple power supplies in servers and switches. Yet it is not merely the presence of redundant devices or components that provides the solution. Instead, monitoring of threshold values is what ensures true redundancy. Particularly at rack level (i.e. for end devices), the issue of redundancy is all too often underestimated or even misinterpreted.

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Retrofitting inline PDUs: Energy management for passive PDUs

Until just a few years ago, data centres were built to last 20-30 years. Although this long-term planning was able to consider capacity needed later on to some extent, it was impossible to predict technological developments or changes in boundary conditions defined by legislation, standards or directives. Consequently, many operators are faced with a reality where the status quo in their existing data centres cannot be altered because 100% availability is needed. As the familiar saying goes: “never change a running system”.  

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GPIO Sensor with Relay Contacts

Monitoring is becoming a vital asset in data centres because metrics are fundamental in maintaining functional integrity. By monitoring critical measurement values, preventive measures can be taken to guarantee 24x7x365 availability. 

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PDU with Type 3 Surge Protective Device (SPD)

When discussing the issue of surge protection in data centres, the argument is often made that the existing UPS system (VFI-SS-111 classification) provides excellent voltage quality. While this statement is in principle true, a data centre contains bundles of cables and busbars which, from the perspective of induced interference, provide a large area exposed to attack – even downstream of the UPS system. 

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