Enjoy high availability with
PRTG availability monitoring
- PRTG monitors server availability
- PRTG monitors website availability
- PRTG monitors network availability
- PRTG monitors email availability
- PRTG monitors 24/7. At a glance.
Looking to improve the availability of your network?
Keep reading for information on:
- Availability monitoring: Choosing the right sensors
- Sneak peek: A introduction to monitoring with PRTG
- Reducing the costs of crashes with PRTG
- Case study: How a bank improves its availability
- Monitoring high-availability clusters
- Practical tip: The hardware you should always monitor
- Definitions: Network reports
- Availability monitoring: Only for big companies?
Starting point: Between downtime and high availability
The email server is down, the telephone won't stop ringing. Everyone is calling - from the secretary all the way to the CEO. The downtime lasts for only six minutes. But the stress and short-term work loss are immense. Calculated over the course of a year and across all components, downtime often amounts to several hours.
Every administrator wants to reduce downtime. Whether server availability, website availability, or the availability of the entire network: the stabler, the better. Interruptions should be a thing of the past. That's where PRTG comes in: Our monitoring software paves the way to high availability. PRTG alerts you promptly so you can take action before crashes arise.
With PRTG, you'll keep a constant eye on your entire network.
iWhat is a sensor?
In PRTG, “Sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.
Whether it be an online store, information portal, or the website of a company, institution, or association, an Internet presence should always be accessible. Every system failure comes with lost sales and customer complaints. The Ping Sensor is one of the sensors that helps you to avoid these crashes. And the Cloud HTTP Sensor and Cloud Ping Sensor monitor the availability of your website from a number of different locations around the world.
In today's world, a company cannot function without email. Be sure to take advantage of our Pop3 Sensor and SMTP Sensor to monitor the availability of your mail server. PRTG also comes equipped with two email round trip sensors, which you can use to monitor whether emails are delivered and how long they need to arrive at their destination.
Whether SQL, FTP, or a virtual server such as VMware or Hyper-V: Your servers should always be available. PRTG monitors all your hardware. The Ping Sensor serves as the central interface. When interruptions occur, this sensor sends out an alarm and all the other sensors (such as those for CPU or memory) pause automatically. This means you'll receive a single, targeted message instead of being bombarded with notifications.
Many administrators want to know how much bandwidth they use. PRTG is the perfect tool for SLA monitoring, for you can find out if your service provider is actually delivering the amount of bandwidth that was promised! You also get access to sensors for all kinds of different technologies. For more information, see our Bandwidth Monitoring page.
The goal: 99.999 percent!
When it comes to the availability of your website, servers, and databases, only one figure matters: 99.999. These “five nines” are indicative of the high availability of your network. PRTG helps you target this ambitious goal. Here’s an overview of the various availability classes (figures are rounded):
Availability class 2: 99% = 87.7 hours of downtime per year
Availability class 3: 99.9% = 8.45 hours of downtime per year
Availability class 4: 99.99% = 52 minutes of downtime per year
Availability class 5: 99.999% = 5 minutes of downtime per year
Costs associated with IT failures
Costs associated with IT failures are extremely difficult to calculate. Nevertheless, there exists a whole series of studies on this topic. According to a study by Techconsult, one hour of downtime costs medium-sized companies between €20,000 and €40,000. The interviewed companies had an average of four crashes per year, with each crash lasting an average of 3.8 hours. The total costs therefore amount to €320,000 to €640,000 - for medium-sized companies with 200 to 5,000 employees. And this is a conservative estimate.
PRTG pays off
With PRTG, you’ll reduce downtime! And you’ll enjoy a significantly more reliable network. Other benefits include cost and time savings in the area of network management.
The following figures are based on a 2015 customer survey completed by more than 600 PRTG customers worldwide.
Improvement in the availability of the entire IT
Cost savings in the area of network management
Time savings in the area of network management
"PRTG lets us constantly work in accordance with the two-man rule. PRTG notifies us immediately if something is wrong in our network. Thanks to PRTG, we can use our time and resources for the things which really demand our attention."
Brad Mennen, System Administrator at Hume Bank in Australia Hume Bank uses PRTG to monitor its LANs, WANs, servers, website, applications, and much more. To the case study.
Your monitoring at a glance
– even on the go
PRTG can be started within minutes and it's compatible with many mobile devices.
Availability monitoring: Why PRTG is the tool for you!
An all-inclusive tool
With PRTG, you get a centralized monitoring that covers everything. A single dashboard lets you monitor your entire network, as well as all end devices. PRTG simplifies your day-to-day work, and its configuration and set-up are quick and easy.
Built-in alarm feature
PRTG comes with a built-in notification system. When problems arise, you’ll immediately be alerted by email or SMS, e.g. when error messages begin to appear but the overall performance of your system is still unaffected. This means you can act promptly. The alarm feature is included – at no extra charge.
PRTG features a customizable and comprehensive reporting system. You therefore get a reliable database for your long-term planning. With PRTG, you’ll shed light on the causes and consequences of failures, and document the load of your network.
Trusted by 200.000 users
and recognized by industry analysts as a leader
- Unlimited version of PRTG for 30 days
- After 30 days, PRTG reverts to a free version
- Or, you can upgrade to a paid license anytime
PRTG provides for high-availability monitoring. Every PRTG license allows you to set up a simple failover cluster, whereby software runs on two servers simultaneously. If one server crashes, the second PRTG server (“failover”) ensures the smooth continuation of your monitoring. You’ll therefore reduce the risk of your entire monitoring going down in the event of a hardware or network connection failure, and can bring your monitoring ever closer to the “five nines” ideal. Additional licenses will enable you to upgrade your monitoring clusters to run up to four failover nodes.
In true PRTG fashion, setting up a simple failover cluster is quick and easy. To do so, configure one PRTG server on two different computers, each with the same license key. Decide which of your PRTG servers is to be the master node in the cluster, and launch the PRTG Administration Tool on this server.
In the “Cluster” tab, click on “Create a PRTG Cluster” and follow the instructions provided. Once you have created the cluster, open the PRTG Administration Tool on the server which is to serve as the failover node. In the “Cluster” tab, click on “Join a PRTG Cluster” and follow the instructions provided. Confirm the failover node in the PRTG web interface on the master server by activating the failover in the cluster settings. Finally, add the desired devices to the cluster probe in PRTG to enable them to be monitored by both servers.
"One of the biggest advantages of network monitoring with PRTG is that PRTG alerts you before individual parts of an IT infrastructure begin to collapse. I always recommend the close monitoring of all hardware components. These include CPU load, memory, and hard disks, as well as the amount of bandwidth that is currently being used. PRTG will send a push notification to your smartphone whenever these values approach critical levels, which means you can immediately take appropriate action - before your system really does crash. Thanks to PRTG alerts, high achievability is a reality!"
Christian Zeh, Senior Systems Engineer at Paessler AG
Network reports are often neglected.
While many IT managers keep a close eye on their networks, they often do without software that provides for round-the-clock monitoring. A network report allows you to quickly recognize medium to long-term developments in your network. These can include a steady increase in load or minor malfunctions that occur time and again but are easily overlooked or forgotten. PRTG lets you create simple and clear reports. Many sysadmins use our network reports to convince their managers of the need for additional resources.
Network reports: A comparison of the tools that generate them
When it comes to network reports, there are two types of tools on the market: specialized tools that monitor and evaluate individual aspects of your network, and all-round tools that keep an eye on your entire network. PRTG belongs to the latter. PRTG displays all your data - from the hardware, applications, and cloud solutions of all the biggest manufacturers - on an easy-to-read dashboard so you can keep a constant eye on your network. If an error occurs, you’ll be notified at once.
PRTG monitors the availability of your network. Along with hardware, it also monitors your available bandwidth and the traffic that flows through your network. As a result, you can keep a constant eye on the performance of your network. Network security is also a major concern. While PRTG is not a security tool, you can also monitor open and closed ports and therefore recognize suspicious traffic at once. PRTG is often used as a starting point for in-depth network analyses to quickly rule out potential causes of problems.
PRTG is often used by SMEs (small and medium-sized companies). However, sometimes a "medium-sized” company can have several hundred or even thousands of employees. Usually the IT departments of these companies are understaffed. Sysadmins have to wear many hats, one of which is to keep a constant eye on their network. When they are quickly informed of malfunctions, their jobs become a whole lot easier. PRTG is a tool that meets all your needs and expectations. And thanks to its easily-upgradeable licenses, PRTG is also an attractive option for smaller businesses. IT managers are free to define their own personal requirements and choose the license that works best for their company.
Organizations with multiple branches
Along with conventional companies, PRTG is also used by organizations such as universities, municipalities, and government agencies. These organizations often have several branches which they would like to monitor from one centralized location. At the same time, their networks are often composed of a variety of different hardware, some of which is outdated – and thus more likely to malfunction. The need to centrally monitor devices made by several different manufacturers is also an important consideration. What’s more, the network may be used for both professional and personal purposes. Network monitoring – including the monitoring of loads, response times, and more – is therefore a vital part of the equation.
Free availability monitoring
Searching the web for “free availability monitoring?” With PRTG, you get 100 free sensors that never expire. Even important functions such as the alarm and reports feature are free of charge for as long as you use the software. What’s more, you can always upgrade PRTG in the event that your network monitoring needs evolve.
PRTG makes life easier!
Our network monitoring software works for you - and immediately notifies you in the event of downtime or system failures.
This means you can go about your day-to-day tasks with total peace of mind.
PRTG saves time
With PRTG, you get one central monitoring tool for checking the availability of your network. Our dashboard provides a quick overview at all times - whether on your desktop or as an app.
PRTG saves worry
Setting up PRTG is quick and easy. You get several sensors for monitoring availability. And with 200+ predefined sensors, you'll have no trouble detecting the causes of downtime.
PRTG saves money
80% of our customers report substantial or even exceptional network management cost savings. The experience shows that the costs for their PRTG licenses have paid for themselves in an average of a few weeks.
Over 95% of our customers recommend PRTG
Paessler AG worldwide trialled PRTG in over 600 IT departments. The aim was to tune the network monitoring software closer to the needs of the administrators.
The result of the survey:?over 95% of the participants would recommend PRTG - or already had.
Performance Monitoring: PRTG provides you with a constant overview of the performance levels of each and every component in your network like servers, virtual machines, or applications. With a high-performance network, your whole company will work with maximum efficiency.
CDN monitoring: PRTG offers you an overview of traffic distribution between international DN nodes, as well as information on traffic strength, response times, and potential weak spots.
PAESSLER AG –
- Unlimited version of PRTG for 30 days
- After 30 days, PRTG reverts to a free version
- Or, you can upgrade to a paid license anytime
Made in Germany: The PRTG Network Monitoring Tool is the fruit of a dedicated, international team. The company was founded by Dirk Paessler. The Paessler AG headquarters are located in the city of Nuremberg, in the heart of Germany.
A quick overview: PRTG provides a quick overview, whether on your desktop or as an app on your smartphone. An individually configurable dashboard features every key stat in the form of an easy-to-understand graph, so you can always make sure your network is running smoothly.
Easy configuration: Our Smart Setup guarantees a quick and easy setup. During configuration, PRTG will ping your network and create appropriate sensors, saving you a great deal of time. Furthermore, switching from other software such as Nagios is relatively quick and easy.
Outstanding support: Our support team strives to resolve inquiries within 24 hours (on business days). Discover a wide selection of videos, webinars, and instructions in our knowledge base. Our manual is also an excellent resource.
Getting started is easy: The trial version is for free, allowing you to evaluate our monitoring tool with no strings attached. To upgrade, simply search for a suitable license. You can modify your license any time you like.
|Network Monitoring Software - Version 220.127.116.119 (April 21st, 2020)|
|Download for Windows and hosted version available|
|English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese|
|Up to 100 sensors for free (Price List)|
|Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more|
Supported Vendors & Applications