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Twing targets communities with new search engine. Listen now!
Ken Russell on making applets FAST. Listen now!
Edison analysts put the management software of an HP EVA system through a series of typical day-to-day storage management tasks. The same tasks were also evaluated on similar systems from NetApp and EMC. This study demonstrates how the superior user interface and virtualization offered by the HP EVA storage system can provide organizations with the benefits of higher administrative efficiency combined with the potential ability to utilize less expensive human resources.
Get the latest on storage technologies that allow IT professionals to better cope with new IT demands. Learn how storage technologies can help you successfully tackle e-Discover, regulatory compliance, green data center initiatives and the data explosion. Get all the details now.
Watch this webcast to learn in six modules how to more cost effectively consolidate your Windows servers with virtualization. This unique program allows you to pick and choose which of the six modules you would like to view or watch the entire webcast at once. Topics covered: Performance, Use Cases, Enterprise-level Support, Managing Windows Workloads, Setup and Configuration and The Future. Find out how you can simplify server consolidation within your organization today. Register below to learn more and be entered to win an Archos 605 Portable Media Player.
For implementing GTD you might try out this web-based application:
Gtdagenda
You can use it to...- Dan
Comprehensive Network & Voice Management Visit CA Network & Voice Management Resource Center and get insights into industry best practices, information that helps you to address your challenges.
Voice over IP (VoIP) has much to offer in cost savings but some customers have concerns about VoIP call quality compared to the quality of traditional voice services. This white paper will help you learn how to take the right steps so that voice quality is assured.
Managing your network is serious business. This paper discusses the benefits of integrating configuration change-awareness into your network fault management solution
Wide-area networks are usually bandwidth constrained, creating application bottlenecks. Further, round-trip delay and packet loss can degrade performance and cause instability that cannot be identified from testing on a LAN.
Extensive testing of applications and equipment is therefore critical to ensure acceptable performance under all network conditions. Fortunately, products known as WAN emulators make it easy for developers and IT managers to test in a lab environment under a wide range of conditions by emulating WAN links on a local network.
Ethernet-based WAN emulators replace an entire WAN infrastructure, including a WAN link and WAN access equipment such as routers and modems, making it possible to test applications and equipment using a single, Ethernet-based appliance on a local network.
These emulators are installed as bridges or routers connecting two local network segments. Network equipment and applications that would be used on opposites ends of the WAN link are installed on either side of the emulator. Users then dial in the bandwidth, latency, packet loss rate, bit error rate and other WAN parameters, and the WAN emulator applies these characteristics to the traffic passing through it.
As Ethernet frames arrive at the emulator destined for the opposite network, the frames are subjected to a series of processes that mirror the events that frames would experience first in the WAN access equipment and then traversing the actual WAN link.
The emulator places arriving frames in a queue to await their turn for transmission. The queue is configured to a maximum size to match the behavior of the WAN equipment, and may include a variety of policies for dropping frames when the queue nears its maximum.
When a frame reaches the head of the queue, it is passed to the transmission-emulation process, which determines the precise amount of time required to transmit each frame based on the frame size and link rate. For example, a 1,500-byte frame requires approximately 8 millisec to pass each frame to a T-1 line.
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