July 3rd, 2009
Paessler’s network monitoring software, PRTG Network Monitor, offers multiple methods to relay notifications, including SMTP mail relay, SMS, ICQ, etc., allowing users to ensure in various ways that they are informed if an issue (such as an outage or a slow server) needs to be brought to their attention. However, there are times when the normal relay means do not suffice, particularly if the main leased line used to connect to the network is interrupted. For these purposes, PRTG Network Monitor includes the option to trigger executable notifications which, combined with the proper external software, can overcome this issue with ease. One software we have been recommending a while is PageGate from NotePage, Inc.
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June 3rd, 2009
Many monitoring features of our PRTG Network Monitor software (as well as many other monitoring tools) are based on WMI. Everything is fine with WMI on Windows XP and Windows 2003, even for larger networks. But when Vista and Win2k8 come into the game it is a completely different story altogether. We have received reports from a number of users that ran into trouble when using WMI monitoring for larger networks - and all of them were using Vista or Windows 2008.
We tried to find out what aspects affect the performance of WMI monitoring. We selected ten servers and PCs in our testing lab. All of them ran a different version of Windows. We measured the WMI performance between them.
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May 26th, 2009
For testing purposes Multi Server Simulator simulates a virtual network of HTTP, FTP, SMTP, or DNS servers plus any number of SNMP-based switches - all on a standard Windows PC. It is an indispensable tool for the evaluation and testing of network management and network testing tools.
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May 25th, 2009
Today we have released version 7.1.3 of PRTG Network Monitor. The major new feature of this version is the Spanish translation of the user interface.
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May 20th, 2009
Over the last weekend the engineers of Wolfram Research gradually launched their new search engine Wolfram|Alpha (or should I better say “knowledge engine”). We monitored their website during this launch with PRTG Network Monitor and here are the results!
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May 7th, 2009
Today www.cloudclimate.com officially leaves “stealth mode”, it is now publicly available. For the last weeks we have been preparing this new website that displays the live performance data of selected cloud hosting providers.
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May 6th, 2009
Today we have uploaded a new version of PRTG Network Monitor. V7.1.2 adds a couple of new features (”Toplists in Maps”, “Clone Map”, among others) plus several bugfixes, most of them based on customer feedback on the previous versions.
You can now download the new version or have a look at the version history.
April 28th, 2009
When we tried to monitor a test installation of Exchange Server 2003 in our labs using WMI we always received the following WMI error message:
8002801D : Library not registered.
Using the following procedure we were able to reenable WMI monitoring for the Exchange Server:
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April 17th, 2009
Some PRTG users that use the new “HTTP Full Page Sensor” on the local probe (or on remote probes) have found huge amounts of disk space eaten up by the Internet Explorer cache folder of the “default user”. The folder is (on Windows XP):
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April 14th, 2009
We wanted to roughly rate performance of a virtual server hosted by Amazon EC2 compared to other hosting offerings. So last week we ran several performance tests on Amazon EC2 instances as well as other cloud and vps hosting platforms plus some servers in our own labs.
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