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The benefits of virtualization are clear cut – massive financial savings in the long run. Virtualization enables organizations to use inexpensive hardware as terminals for multiple desktops which lowers costs in energy, hardware, maintenance and licensing. From a daily user’s standpoint, the convenience of accessing their personal desktops from any device effectively accelerates their time-to-value. However, the transition to virtualization can be costly and companies have to cough up now to achieve the benefits later.

Virtualization enables users to access distributed enterprise applications securely from any remote client device — when it works. If the network fails to perform against defined standards, end users of virtual applications and desktop sessions experience sluggish performance, system freezes and often outright disconnects. Regardless if Virtual Desktop Infrastructure (VDI)  is hosted in your own data center, or remotely, all performance issues – and finger pointing – will come down hard on an IT team.

While occasionally hosted on the LAN, VDI is more commonly reached over a WAN connection. If the performance of this link cannot be ensured, there is no point in virtualizing. Due to the nature of virtualization, a majority of stalls occur when employees are accessing their desktops over the WAN. Critical VDI links can become compromised during peak usage and need to be continuously monitored.

While we all know the frustration that slow applications produce, end users have zero patience for latency or poor performance when it comes to their entire desktop. VDI carries the highest sensitivity level of all applications and its success rating is directly dependent on user satisfaction.

IT professionals who do not pre-asses the network before virtualizing, put their jobs on the line. It is common to underestimate how much data is cycling weekly until there are attempts to move it, and taking an accurate reading of the WAN link is critical. Virtual software providers offer bandwidth requirements – but can the network guarantee that that bandwidth is available? Even during peak utilization? Is there space left to grow?

Requirements for a Successful VDI deployment

• Insight into the critical links while continuously monitoring the performance of VDI from the perspective of your remote site end users.

• Understanding of the measurement from the connection of end users back to the server and the ability to compare real-time against the key performance indicators needed by VDI services to perform properly.

• Alerting and reporting on network issues affecting system and virtualized application performance for pro-active troubleshooting.

Current tools used to monitor VDI include Xangati, Liquid Labs and Lakeside. These solutions are critical for monitoring the health and state of the virtual machines or locations where the application is being consumed. This means that the connection between end users and the virtualized servers is often left unsupervised. There may be green lights showing for all the devices, yet the phone is bright red with complaints. When polling devices produce a summary every few minutes, seconds of latency can be invisible on a monitoring screen, but it won’t be to the engineer who receives the phone call. VDI performance is dependent on the links between remote users and servers.

PathView Cloud offers the ability to assess, monitor and remotely troubleshoot performance from a virtual or physical system to any other target across LANs, WANs, even segments you don’t own or manage.

Want to learn more? Visit AppNeta or start a free trial on your network today!

"Many customers looking to implement a VoIP solution for the first time have absolutely no idea how critical a clean data path is to its usability. We use PathView and PathView Cloud to get an in-depth look at a customer's network health. It's like an MRI for their IT departments." – Eric Knaus, president of RonEK Communications


How are you ensuring a successful transition before plugging in the first phone?

VoIP, Video and Unified Communications are highly cost-effective network services. While your wallet may be breathing a sigh of relief, your network is about to get the wind knocked out of it by the  weight of VoIP and video conferencing services. Network performance is dependent on existing applications and user activity so network engineers implementing VoIP must take this into account.

In the past, enterprise companies dedicated a separate network or connection specifically for VoIP. If the phones don’t work, your business stops. For many organizations, adding to the existing network demand and performance challenges is unrealistic.

Throwing VoIP onto a network without pre-assessing is like jumping into a pool without checking for water (ouch!). Without a full comprehensive inspection of your surroundings, the results will be painful.

As VoIP moves toward a standard application regardless of business size, network engineers are forced to piggy back VoIP onto the existing infrastructure. And for any network engineer who wants to maintain the performance of existing applications AND ensure the performance of the new VoIP services, a pre-deployment network assessment is critical

An Effective VoIP Assessment will:

• Measure the call load capability of the network

• Identify the faults and shortcomings of the network

• Provide a holistic view of the network’s ability to handle data and voice traffic

• Lower the project’s cost estimates

• Verify service level agreements (SLAs)

• Eliminate the network as a gating factor in the VoIP project

A functioning network does not always equal a prepared network. Issues in the infrastructure may not be visible until the weight of a VoIP implementation crushes it.

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But where are the problems that are going to obstruct VoIP performance?

Three key benefits to conducting Advanced Network Assessments:

1. Test how well the network will perform without deploying a single device. VoIP pre-deployment assessment should look at the current state of the converged network, evaluate its ability to support VoIP and identify the dysfunctions that are restricting performance and the requirements to meet call load need.

2. Look at the life-cycle of your network in relation to VoIP. Generate call loads over days or weeks to take into account on and off peak network services. See in real-time how scheduled back-ups, data uploads and periodic events will affect voice quality.

3. Simplicity. Take it one site at a time. If the company decides to bring on a new location, your assessment process should not start from scratch.

Pre-deployment assessments should be done prior to purchasing or deploying any VoIP equipment or making any upgrades. Get yourself a complete analysis of the end-to end data network, recording important measurements such as bandwidth, utilization, throughput, loss, jitter, latency and MOS. A proper assessment will identify and isolate faults on the network that currently inhibit application performance.

PathView Cloud will ensure a successful VoIP deployment and ongoing performance. PathView Cloud generates a series of packet bursts that are placed on the network in a proprietary manner and collect the information required for a full analysis of the involved network segment from end-to-end

Want to learn more? Visit AppNeta or do a FREE pre-assessment on your network today with the 14-day free trial!


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