NETWORK WORLD NEWSLETTER: DAVE KEARNS ON NOVELL NETWARE TIPS 08/31/04 Today's focus: Novell clusters go to the next level
Dear [EMAIL PROTECTED], In this issue: * Novell takes another important step with clustering technology * Links related to Novell NetWare Tips * Featured reader resource _______________________________________________________________ This newsletter is sponsored by Statscout Blanket Network Performance Monitoring Monitor your entire network every 60 seconds with minimal impact on the network. Businesses and organizations seeking detailed performance and troubleshooting reporting on networks of 1000 to 200,000 network interfaces in size will benefit substantially from using Statscout. Request your 30-day trial now, click here http://www.fattail.com/redir/redirect.asp?CID=78755 _______________________________________________________________ IS SECURITY RIPE FOR OUTSOURCING? Security demands for online applications such as e-commerce and Web services are prompting more corporate customers to hand off security functions - such as intrusion detection and firewalls - to outside service providers. Find out if security should be outsourced in this Network World article: http://www.fattail.com/redir/redirect.asp?CID=78260 _______________________________________________________________ Today's focus: Novell clusters go to the next level By Dave Kearns Any business that positively, absolutely has to be up and running 24 hours a day, seven days a week, 52 weeks a year, needs clustered servers. I've been beating the drum for Novell Cluster Services ever since it was introduced shortly after the release of NetWare 5. Before that, Novell had, with good reason, concentrated on hardware failure as the major cause of server and service downtime which was combated by using System Fault Tolerant (SFT) NetWare to provide redundant hardware - and even redundant servers - to guard against failure of any single component. But five years ago two things had become apparent: multiple component failure was almost as common as single component failure; and software failure was causing more server crashes than hardware failure. While we still needed to protect against hardware faults, the SFT technology couldn't handle problems in software. Bad software, in fact, would crash both servers in an SFT pair, which meant you were spending money for a solution to your problem but the solution didn't work. Clustered servers, though, could overcome that problem. Where SFT was built on a shared memory model (both servers' RAM contained identical code which was constantly synchronized), clustered servers work on a shared storage model. There's a good paper on the theory and implementation of the original Cluster Services still available from Dell's Web site which you should read if you've not been exposed to the service: <http://www.nwfusion.com/nlnovell543> As the authors state, while SFT was all about high availability, "the goals of a cluster are to provide high availability, scalability, and manageability. From the client's perspective, the application or resource should always be available to service its requests. Scalability implies the ability to increase the performance of the overall cluster by adding more resources (nodes) to the cluster. A single-system image simplifies administration and management of the cluster." Now Novell has raised the bar by introducing "clustered clusters." Novell Business Continuity Clustering (NBCC) Version 1.0 automates the configuration and management of high-availability, geographically dispersed, clustered servers to greatly improve availability, scalability and manageability. While the earlier Cluster Services package did all it promised in terms of failover, there were limitations on how far apart the servers in the cluster could be. NBCC overcomes that limitation by providing for up to four geographically dispersed clusters of servers to be tied together in a "supercluster" so that the failure of one site doesn't have to bring an enterprise to its knees. It should go without saying (it should, but I'd better anyway) that NBCC is fully eDirectory-integrated and controlled. It's really the power of the directory that makes it all possible. Now Novell Business Continuity Clustering isn't for everyone. But if uptime is crucial, if you have multiple computing centers and if - most importantly - you're running NetWare 6.5 (no Linux allowed just yet), then you should find out more at: <http://www.novell.com/products/businesscontinuity/> _______________________________________________________________ To contact: Dave Kearns Dave Kearns is a writer and consultant in Silicon Valley. He's written a number of books including the (sadly) now out of print "Peter Norton's Complete Guide to Networks." His musings can be found at Virtual Quill <http://www.vquill.com/>. Kearns is the author of three Network World Newsletters: Windows Networking Tips, Novell NetWare Tips, and Identity Management. Comments about these newsletters should be sent to him at these respective addresses: <mailto:[EMAIL PROTECTED]>, <mailto:[EMAIL PROTECTED]>, <mailto:[EMAIL PROTECTED]>. Kearns provides content services to network vendors: books, manuals, white papers, lectures and seminars, marketing, technical marketing and support documents. Virtual Quill provides "words to sell by..." Find out more by e-mail at <mailto:[EMAIL PROTECTED]> _______________________________________________________________ This newsletter is sponsored by Statscout Blanket Network Performance Monitoring Monitor your entire network every 60 seconds with minimal impact on the network. Businesses and organizations seeking detailed performance and troubleshooting reporting on networks of 1000 to 200,000 network interfaces in size will benefit substantially from using Statscout. Request your 30-day trial now, click here http://www.fattail.com/redir/redirect.asp?CID=78755 _______________________________________________________________ ARCHIVE LINKS Archive of the Novell NetWare Tips newsletter: http://www.nwfusion.com/newsletters/netware/index.html Novell news page The Novell news and analysis from Network World Fusion. http://www.nwfusion.com/news/financial/novell.html _______________________________________________________________ Solutions for Application Performance Management - Webcast Watch this informative webcast now and discover how to address Application Quality Management, and dramatically reduce downtime and the cost of application diagnostics and support. Tune in today. http://www.fattail.com/redir/redirect.asp?CID=78022 _______________________________________________________________ FEATURED READER RESOURCE WONDERING IF YOUR PAY IS UP TO SNUFF? Check out Network World's 2004 Salary Calculator to see if you're getting paid what you're worth. 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