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Make time to review your storage network configuration
News At the time of our installation, EqualLogic also recommended, for full redundancy, two separate switches, and provided a cabling diagram for getting the best results in the event of hardware failure somewhere in the chain.
[September 28, 2006, 15:20]
US army aims to take P2P into battle
News From a military context, having a centralised server is a point of failure, a critical failure node. In an interview with O'Reilly Network's OpenP2P.com, Macedonia explained that in the future a squad could virtually practice an attack while out in...
[August 30, 2001, 15:13]
Troubleshooting Outlook Web Access
News If your clients are still unable to connect to the OWA server, it's probably either due to a firewall problem or an IIS failure. A failure of both pings could also mean that there is no connectivity between the machine that you're pinging from and...
[February 25, 2003, 10:00]
Is BT's Fusion a flop?
News ZDNet UK asked BT whether it regarded its sales figures as a failure. We don't regard it as a failure. Fusion cuts phone bills by routing calls over a fixed network connection when one is available, such as in the home, office or a Wi-Fi hotspot.
[January 10, 2007, 12:02]
Cyberterrorism: Network lessons from Ground Zero
News As a result of these dual connections, it's not buying you any redundancy from the position of failure of the senior central office. The goal is to create a metropolitan-area network that guarantees geographic diversity of its routes.
[August 28, 2002, 15:58]
Fault Tolerance Management for a Hierarchical GridRPC Middleware
White Papers GridRPC middleware are usually managing failures by using TCP or other link network layer provided failure detector, automatic checkpoints of sequential jobs and a centralized stable agent to perform scheduling.
[January 3, 2009, 0:00]
UK VoIP market hots up
Talkback Earlier this week there was a serious failure of parts of the AlwaysON network that affected a number of customers. This was a direct result of the fact that a part of our network was running unprotected during a transition between an interim and a...
[March 11, 2006, 17:54]
Exchange 2003 VSS Backup Solution for IBM System Storage DS8000 and DS6000 With IBM Tivoli Storage Manager for Mail - Data Protection for Exchange
White Papers Even short periods of unexpected downtime can have a serious impact on productivity and in the event of a system or network failure, the ability to back up and/or restore data quickly and consistently is vital.
[July 19, 2007, 1:00]
An Ontology for Network Security Attacks
White Papers The paper first considers network security services and then reviews threats, vulnerabilities and failure modes. The review is used to construct a framework which is then used to define an extensible ontology for network security attacks.
[September 19, 2008, 1:01]
GFI Network Server Monitor: Automatically Sends Alerts and Corrects Network & Server Issues
White Papers When a failure is detected, GFI's network monitor can alert the user by email, pager or SMS, as well as taking corrective action by, for example, rebooting the machine, restarting the service or running a script.
[September 21, 2006, 0:00]
Message Ferrying: Proactive Routing in Highly-Partitioned Wireless Ad Hoc Networks
White Papers Due to node mobility, limited radio power, node failure and wide deployment area, ad hoc networks are often vulnerable to network partitioning. An ad hoc network allows devices with wireless interfaces to communicate with each other without any...
[August 25, 2007, 1:00]
Secure Overlay Network Design
White Papers The paper shows that in the average case model, when failure probabilities are large, there is an optimal star-shaped design, and such a design can be computed in polynomial time. On the other hand, there are instances with small failure...
[December 7, 2006, 0:00]
Addressing Federal Network Redundancy Requirements: Using VPN Solutions for Network Redundancy
White Papers Federal agencies can use VPN technology to enhance the resiliency of their existing WAN infrastructure by using the Internet as alternative communication backbone in the event of a network failure. In the past, U.S.federal agencies have implemented...
[August 30, 2005, 3:00]
The CA Threat Management Solutions
White Papers Businesses are critically dependent upon their IT systems and failure to counter threats to IT systems can not only result in damage to network, systems and data, but can also affect the reputation of your business.
[June 20, 2009, 1:21]
DB2 9 HADR: Build a Standby Database Using SnapMirror and Create a Read/Write Copy of the Standby Using FlexClone
White Papers In case of failure, the standby database can be made available to clients across the network until the primary database is repaired and returned to service. The DB2 HADR feature provides immense data protection from both partial and full site...
[May 11, 2007, 1:00]
Highly-Resilient, Energy-Efficient Multipath Routing in Wireless Sensor Networks
White Papers Previously proposed sensor network data dissemination schemes require periodic low-rate flooding of data in order to allow recovery from failure. The paper considers constructing two kinds of multipaths to enable energy efficient recovery from...
[July 11, 2008, 1:02]
Designing and Implementing a Virtual Private Network (VPN)
White Papers Furthermore, the combined VPN and dial-up solution is more robust than either is alone, each serving as a back-up for the other in the case of over-flow traffic or network failure. VPN also allows network administrators to take advantage of new...
[September 25, 2009, 3:05]
Diagnosis of TCP Overlay Connection Failures Using Bayesian Networks
White Papers To address this problem, a passive diagnosis approach is developed that infers the most likely cause of failure using a Bayesian network modeling the conditional probability of TCP failures given the IP addresses of the hosts along the overlay path.
[December 20, 2007, 0:01]
BT network crash takes firms offline
News Dial-up Internet users were also hit, but they should only have experienced a temporary connection failure. Tens of thousands of businesses with a BT broadband connection were knocked offline on Friday when BT's network suffered a major crash.
[January 14, 2005, 16:10]
WiscNet Elects 8e6 to Lead Wisconsin Schools, Government, and Public Services With a Hardware Filtering Solution
White Papers WiscNet was experiencing many performance problems with their former software Internet filtering solution, such as failure to connect to the Internet, bottlenecks, and difficult manageability. Wisconsin State Education Research Network (WiscNet) is...
[June 20, 2007, 1:00]
