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Where the Cloud Touches Down: Simplifying Data Center Infrastructure Management

Thursday, July 25, 2013
10:00 AM PT/1:00 PM ET

In most data centers, DCIM rests on a shaky foundation of manual record keeping and scattered documentation. OpManager replaces data center documentation with a single repository for data, QRCodes for asset tracking, accurate 3D mapping of asset locations, and a configuration management database (CMDB). In this webcast, sponsored by ManageEngine, you will see how a real-world datacenter mapping stored in racktables gets imported into OpManager, which then provides a 3D visualization of where assets actually are. You'll also see how the QR Code generator helps you make the link between real assets and the monitoring world, and how the layered CMDB provides a single point of view for all your configuration data.

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A Network Computing Webinar:
SDN First Steps

Thursday, August 8, 2013
11:00 AM PT / 2:00 PM ET

This webinar will help attendees understand the overall concept of SDN and its benefits, describe the different conceptual approaches to SDN, and examine the various technologies, both proprietary and open source, that are emerging. It will also help users decide whether SDN makes sense in their environment, and outline the first steps IT can take for testing SDN technologies.

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How-To: Plan an iSCSI SAN

Which Switch?

I've used a consumer-grade Gigabit Ethernet switch in demonstrations of iSCSI technology and run iSCSI on a 10-Mbps Ethernet hub just for grins. But don't try this at the office or at home. Consumer switches typically don't support wire-speed connections between multiple ports, so they may drop packets without warning.


We've seen a low-end, 24-port switch with two, 12-port switch engines and a single-gigabit connection between them. But if you put your servers on ports 1 through 16 and place your disk arrays on ports 18 through 24, that single-gigabit connection will get overloaded, resulting in packet loss and a huge performance hit (or worse).

Your iSCSI SAN should use an enterprise-class, nonblocking, Gigabit Ethernet switch, such as one from Extreme Networks or Foundry Networks. And given the homicidal thoughts that run through my head when my BlackBerry buzzes at 4 a.m., spring for the dual, redundant power supplies, too.

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