October 27, 2010
We have been debating internally whether to move towards a hardware-based WAN optimization solution or shift towards software-based WAN optimization. The financial considerations of a lower total cost of ownership with software-based solutions pulls a lot of weight. In addition, the virtual appliances also leverage the scalability, flexibility and manageability of the virtualization system that [...]
We had some challenging wireless LAN issues recently in and around our large warehouse facility. With over 10,000 square feet with metal racks and a metal roof, users were complaining about connectivity, weak signals, and intermittent access. We bought the new Fluke Networks AirCheck Wi-Fi handheld tester for 802.11 a/b/g/n. This device identified connectivity problems, found some rogue access points, and detected interference, [...]
October 25, 2010
Recently one of our broadcasting clients was configuring a couple video routers. So we stayed longer than planned to watch and learn a few technical things about 3GHz modern routing systems. Routing signals in television facilities at one time supported only one or two formats and a couple of audio channels. With all the new formats and the need to [...]
We had a cooling situation this past summer, which we thought we were prepared. Our computer room AC unit had some mechanical issues which required significant downtime in the middle of a heat wave. We rolled in a small portable backup AC unit and got some floor fans in place around the equipment racks. All efforts were inadequate [...]
A power sensor, used together with a power meter, is the most fundamental equipment used for RF power measurement. But power sensors are damaged due to improper usage and overpowering. Many do not realize the adverse effects that overpowering has on power sensors, even if the sensors aren’t overpowered to the point that they become inoperable. [...]
October 21, 2010
Any empty rack spaces should be filled with blank panels. Any open space in the front of the rack will allow the colder air in front to mix with the hot air inside or behind the rack. Keeping the front of your racks sealed helps contain and control the flow of air. See diagram: Rack Cooling [...]
October 19, 2010
We’ve been debating a SAN or NAS technology enhancement for our network storage. We think it’ll come down to costs in the end. NAS: Any machine that is connected to the LAN can use NFS or CIFS protocols to share files in NAS. Since storage devices are directly connected to the LAN it increases congestion [...]
October 15, 2010
Data center downtime is often the result of equipment failure, or a chain reaction of unexpected events. Human error causes roughly 70 percent of the problems that plague data centers today. Here’s a look at Emerson Network Power’s Best Practices to Avoid Data Center Failure by Human Error: 1. Shielding Emergency OFF Buttons – Emergency Power [...]
Our small and large enterprise clients still worry about security and performance using a cloud infrastructure-as-a service provider. Many experienced download speeds that were much slower than upload speeds. The cloud pay-as-you-go model is a cost saver. Those with large amounts of data and mission critical infrastructures found security a complex issue. Lack of visibility and [...]
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