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© 2012 CISCO SYSTEMS, INC. AND XANGATI. ALL RIGHTS RESERVED. Xangati VDI Dashboard and Cisco Virtual Experience Infrastructure (VXI) Smart Solution 2.6 WHITE PAPER OCTOBER 2012
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Page 1: Xangati VDI Dashboard and Cisco Virtual Experience … · 2016-04-04 · Cisco’s virtualization experience infrastructure (vXi) smart solution accelerates the successful adoption

© 2012 CisCo systems, inC. and Xangati. all rights reserved.

Xangati VDI Dashboard and Cisco Virtual Experience Infrastructure (VXI)

Smart Solution 2.6

WHITE PAPER

OCTOBER 2012

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© 2012 CisCo systems, inC. and Xangati. all rights reserved. white paper

What You Will LearnXangati and Cisco have partnered together to validate Xangati’s vdi dashboard software in Cisco’s vXi smart solution 2.6 for both Citrix Xendesktop and vmware view. this white paper focuses on how Xangati’s performance assurance solution is deployed and integrated within the Cisco vXi framework. additionally, it will highlight the operational benefits for an it organization to have a turnkey virtual appli-ance (with no desktop agents) that explicitly tracks the end-to-end performance of a vdi environment to ensure optimal Cisco vXi user experience.

IntroductionCisco’s virtualization experience infrastructure (vXi) smart solution accelerates the successful adoption of the virtual workspace by of-fering an open and validated virtual desktop, voice and video solution. Cisco vXi increases business efficiency, productivity and agility by delivering an exceptionally flexible and secure workspace solution with uncompromised user experience, anywhere and on any device.

Cisco vXi builds on Cisco’s data center, network and collaboration technologies, combined with services and support to deliver a compre-hensive solution that simplifies deployment and minimizes implementation risk. with Cisco vXi, you can take advantage of an architectural approach that delivers new virtual workspace services, while lowering operational costs.

Xangati is the recognized leader in performance management solutions for virtualization and cloud environments. Xangati has worked with Cisco to integrate its solution into Cisco vXi. organizations that deploy Xangati improve the performance assurance of their virtual environ-ments through a software suite that proactively tracks cross-silo performance health live and to the second. Xangati’s patented in-memory performance management engine is at the heart of the solution’s ability to quickly identify performance storms (e.g., storage storms, network storms, etc.) that can spontaneously affect the user experience. Xangati’s vdi dashboard provides administrators immediate ac-tionable insights about the cause of a storm and can help it remediate the problem before users notice the performance impact. Xangati’s solution is framed by a live streaming user interface (Ui) with the ability to record and replay all activity in the infrastructure. Xangati’s novel UI delivers 3600 insights for all the key stakeholders that are responsible for delivering an end-to-end Cisco vXi solution.

Challenges with Managing VDIto quote gartner, in the presentation Managing the End-User Application and Desktop Experience the challenge in managing hosted virtual desktops (hvds) is that “you are trading a configuration management problem for a performance problem.” to that end, it is of paramount impor-tance that the organization responsible for the Cisco vXi service has continuous insights into performance health of their entire infrastructure.

moreover, gartner highlights that “hvds add new management layers that the end-user computing team hasn’t dealt with before in the research report hvd organizational models. organizations delivering hvds must be acutely focused on availability and performance, and end-user computing administrators typically do not have the server, storage and networking expertise required to identify performance problems and fix them.” therefore, gartner expressly recommends, “organizations should assign individuals in each functional domain to be hvd leads. ideally, multiple people within each technical domain will have hvd-specific knowledge to ensure availability of resources.” to align with gartner’s cogent recommendations it is absolutely imperative that there be a single solution that can track the interactions among these diverse domains in a way that this collective team can work together to deliver optimal performance to Cisco vXi end users. Xangati’s vdi dashboard meets these require-ments by being the only solution built to gather live and continuous insights about network, server, storage, hypervisor, end-user and vdi session protocol activity and to present them in one common Ui.

How Xangati’s VDI Dashboard Integrates with Cisco VXI Smart SolutionXangati’s software solution deploys as an open virtualization format (ovF) virtual appliance that installs through vmware’s vCenter as a vsphere vm. the Xangati virtual appliance has an integrated os, database and Xangati’s in-memory performance engine that allows an it organization to have a turnkey implementation that will be up in running in their Cisco vXi environment in under an hour. a single Xangati virtual appliance can manage thousands of desktops and multiple vCenters, which is critical in large-scale Cisco vXi environments.

[For installation details on installation please refer to this Xangati installation video http://www.youtube.com/watch?v=igtxfw2cit4]

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the Xangati approach is unique in the vdi performance management market in that it only gathers its insights from pre-existing data feeds/apis within the Cisco vXi environment that allow it to track both infrastructure performance and end-user activity (even in non-persistent desktop environments). this lightweight model is the ideal alternative to agent-based instrumentation approaches, which are known to introduce additional complexity to desktop images and create a tax on the hardware infrastructure by reducing the desktop vm density on a UCs.

Figure 1 illustrates the various data feeds/apis that the Xangati virtual appliance leverages to continuously analyze the performance of critical elements within the vXi environment. these disparate cross-domain data feeds/apis are processed continuously by Xangati’s in-memory performance management engine, which has a four-microsecond object handling time. the microsecond level capabilities of the Xangati system have two critical functional benefits. First, the system has granular time resolution in regards to the information that the system processes about the environment allowing it to immediately identify transient and spontaneous performance storms. second, the system maintains this granular time resolution at great scale with the ability to track up to 250,000 objects within the Cisco vXi environment with a single virtual appliance.

Figure 1: Highlights where the Xangati VDI Dashboard interacts with the VXI environment to gather its insights.

in terms of gathering data feeds from the Cisco elements within the vXi environment the Xangati solution makes good use of the unique interactional insights that come from Cisco’s netFlow protocol. the netFlow protocol is effectively pushed on a continuous basis to the Xangati virtual appliance by elements within the Cisco nexus switch family. the Cisco nexus 1000v and 1010 virtual switching solutions provide continuous insight about networked activity traversing the vmware vsphere environment. in addition, the nexus 5000 and 7000 series core switches provide insight on networked interactions between the desktop virtualization environment and key back-end applica-tion and ip storage activity. overall, Xangati’s ability to track second-by-second activity across the network allows the vXi administrator to understand the aggregate workload of the vdi protocols such as hdX or pCoip. this is critical information for optimizing desktop protocols across lan and wan connections.

moreover, Xangati leverages Cisco’s ip sla protocol to measure critical site-to-site performance metrics. Xangati displays detailed insights on when network latency or packet loss are directly affecting Cisco vXi users in a remote office. this is critical insight for environments where users are perhaps on another continent from their desktops in a centralized data center.

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Xangati also gathers key performance insights from other components of the Cisco vXi smart solution. vmware vsphere’s apis provide rich information about both compute and datastore performance. although, there are a number of solutions that also leverage information from vsphere’s vCenter, there are a couple of capabilities that distinguish Xangati’s model. the first is that Xangati’s in-memory collection and collation architecture allows Xangati to grab vsphere’s real-time statistics out of the ram of the vCenter server for every object/metric that it tracks. this allows Xangati to have a time resolution of 20 seconds for vsphere statistics whereas other solutions will grab informa-tion from the vCenter on 5-minute, coarse-grain averages. second, the Xangati solution gathers interactional insights for every consumptive performance metric it gathers. For instance, when Xangati gathers a datastore latency number for a specific lUn, at the same time grab information about every vm interacting with that lUn at that moment in time and at what input/output operations per second (iops). this allows us to correlate how transient interactions affect system performance.

Xangati sees below the infrastructure level to gather rich desktop os and vdi session level information as well. through microsoft windows management interface (wmi), Xangati is able to interact with both microsoft windows and Citrix or vmware’s vdi agent on both an ad-hoc and an event driven basis. this approach is highly beneficial to customers because it provides a rich end-user level experience insight without having to embed an agent within the desktop image. this information allows service desk employees to see which application is adversely affecting the CpU resources of the desktop vm. alternatively, to identify that there is something happening at an hdX or pCoip level causing a desktop tiling issue.

For further information on how the Xangati solution gathers its insights from the Cisco vXi environment please refer to Figure 2.

Figure 2: Highlights the precision the Xangati solution has in gathering insights from the VXI environment.

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Xangati VDI Dashboard User Interface

Figure 3: Xangati VDI Dashboard with Performance Health Index

service desk, virtualization administration, storage administration and network administration personnel must work together to manage and optimize the performance of a Cisco vXi environment. the Xangati vdi dashboard provides a highly responsive, intuitive Ui that can be structured so each “silo” administrator can have context as to how their resources are affecting the performance of other areas of the infrastructure.

By tracking dynamic physical and virtual interactions with cross-silo visibility, the vdi dashboard continuously analyzes the infrastructure for transient performance fluctuations that indicate performance storms in the environment. adding further operational value to the Xangati ap-proach, the live, streaming Ui provides a “digital video recorder” (dvr) scroll-bar available in every view. this scroll bar enables second-by-second past and present visualization into cross-silo interactions. the dvr recording function is automatically triggered when any perfor-mance storm affects the infrastructure that shows all the activity adversely affecting end-user performance and will show all the interactions affecting the user at a moment in time. For example, if the user’s desktop is driving much more CpU activity than normal and negatively affecting its own performance, the recording will reveal the guest-level process driving this CpU contention storm. with that insight, the Cisco vXi administrator will be able to contact the end user and stop the offending process on the desktop.

administrators who need to relay critical information across the organization can also manually trigger recordings. For instance, if an end user is experiencing pCoip packet-loss over the wireless network, the recording can be forward to the network administrator to dig into the details using network specific monitoring tools.

[to review the functionality of the Xangati vdi dashboard please watch this video http://www.youtube.com/watch?v=lmkhtpgBpQy]

it is worth noting that the vdi dashboard can easily be set up and does not require third-party services. the vdi dashboard has the ability to leverage a simple “membership rules” wizard that allow each of the key object elements (e.g., desktop users, hosts, datastores etc.) to be auto-populated into the dashboard.

[to configure the vdi dashboard to your expectations watch this video for details here http://www.youtube.com/watch?v=-g5h95_2Boe]

The Performance Management Engine and Performance HealthXangati’s in-memory performance management engine establishes an architectural foundation that differentiates Xangati’s software from sluggish disk-driven alert monitoring solutions. Xangati continuously processes data feeds it gathers or receives from across the vXi. this engine collects, collates, checks performance health, and visualizes metrics and interactions for every object (e.g., vm, lUn, etc.) that it is tracking. the system processes insights about each object every second with a handling time of four microseconds. a handling time measured in microseconds ensures that the Xangati solution can scale to even the largest Cisco vXi environments without any sacrifice in precision or in the responsiveness of the Ui. this precision model of data gathering and analysis is in harmony with the real-time nature of the various communication protocols leveraged with the vXi.

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Xangati is the only solution able to identify transient performance storms sweeping into an environment and to begin recording their impact because it tracks the environment with an unparalleled level of precision. in contrast, alert monitoring solutions gather data averaged over lengthy time intervals ranging from five to 15 minutes and allow these storms to “fly under the radar” and put the it administrators in a reac-tive mode when trying to support their vXi end-user community.

Tracking Performance Health through System Learned Profiles and Best Practices ThresholdsXangati leverages a combination of system learned profiles and industry-recognized best practices to fully understand Cisco vXi perfor-mance. Xangati’s system learned profiles continuously react to the operational environment in which it is deployed. the system develops performance profiles across dozens of metrics for every object that it is tracking whether that is a vm, an end user, a vdi protocol, a datastore or a hypervisor host. these profiles evolve as the environment evolves. moreover, the profiles reflect the periodicity of a given environment, and provide a different profile for key vdi login hours in the morning when compared with user activity after the formal close of business. these system-learned profiles are particularly useful in tracking the health of key workload metrics like storage and network i/o that in general can vary greatly depending on the vdi end-user and the role they serve within the organization.

at the same time, Xangati also uses best practices thresholds for a number of critical metrics that are indicators of infrastructure contention such as CpU ready, storage latency and network latency. the Xangati performance management engine is continuously comparing the profiles and thresholds against live activity for every object to determine which objects within the Cisco vXi environment are entangled in performance storms. moreover, because the best practices thresholds can be leveraged instantly upon install, the Xangati software can be deployed immediately in an environment to identify the areas of impact of a performance storm as well as the cause.

The Importance of Tracking Interactionseffective performance management in a virtualized world requires understanding how the actions of one object impact another. if there is a problem with one object, you need to be able to see which other object interacts with it and could be causing the problem. accomplishing this requires analytics that can detect and show that a CpU spike relates to a certain interaction between two vms. Xangati’s unique ability to understand interactions let us point directly to root-cause and keeps administrators from “chasing their tails.” to underscore this point a recent ZK research study on cloud performance management found that nearly 80% of performance storms take it administrators over an hour to find the problem source. Xangati can eliminate these long delays by directly tying cross-silo interactions to their infrastructure effect.

Unlike alert trending solutions, Xangati delivers accelerated troubleshooting capability through tracking and analyzing interactions for all the consumptive metrics it gathers. the virtualization environment fluctuates constantly, and the inter-dynamics of objects at a given moment vary widely from “configured” relationships. Knowing these short-term interactions is fundamental to problem identification in a world of non-persistent desktops where a user logs into a different desktop from a different location with each access. it is only with the interactional information that a Cisco vXi administrator would know at any moment which vm is causing a datastore contention storm and which users are impacted.

in an increasingly complex and diverse virtualized environment, it administrators must know about every object in the infrastructure, how they behave and interact with each other in a live and continuous fashion to a scale of hundreds of thousands of objects.

Analyzing Root Cause Through the Xangati VDI Dashboardthe Xangati vdi dashboard delivers automated analysis that accelerates the time to problem resolution by clearly identifying the cause of a problem and the extent of its impact. solving infrastructure issues begins when the system automatically notifies an administrator about a performance storm in the environment. notification is sent through an email or an snmp trap and links the administrator to the Xangati vdi dashboard.

the dashboard clearly delineates for the administrator what type of storm or potentially multiple storms that are affecting the environment. the most common storms that affect Cisco vXi environments are CpU contention storms and storage contention storms. For the sake of this example, we will focus on a CpU contention storm.

the administrator can rapidly dig into the details on the specific CpU contention storm by generating a storm analysis report—see Figure 4.

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Figure 4: Storm Analysis Report

the Xangati dashboard outputs this storm analysis report after complex heuristics have leveraged the interactional awareness of the sys-tem. to that end, the system searches for storm patterns and will identify if the contention storm is due to a host compute capacity issue, a scheduler issue or simply an errant vm driving significantly more resources than its previous norm.

in the case of the storm analysis in Figure 4, the notification highlights that a dozen vms are entangled in a contention storm as indicated by a high CpU ready state (CpU ready is a vsphere metric that reflects a vm’s wait time for CpU access). the system generated analysis goes on to show that a specific vm newapp_vm is expressly responsible for this performance storm. Xangati’s heuristic analysis has highlighted this vm because it is driving much more CpU activity than its performance profile and it is doing so at a level that is dispropor-tionate to the other vms that are entangled in this CpU contention storm.

now that the system has specifically flagged the newapp_vm as the one to investigate, the system aids an administrator’s workflow by providing an alert recording for this specific vm—see Figure 5.

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The metric in Figure 5 high-lighted in orange notes that CPU usage is well above the best practice threshold and its performance profile. The Xangati VDI Dashboard allows the administrator to investigate one level deeper by providing WMI capabilities to present the top processes driving CPU, Memory and I/O.

Figure 5: Alert Recording

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the alert recording is effectively a streaming Ui view that captures the complete activity of the desktop vm for the duration of a problem state. the recording captures all critical performance metrics for that vm and indicates which metrics are above either their performance profiles or best practices thresholds. the metric in Figure 5 highlighted in orange notes that CpU usage is well above the best practice threshold and its performance profile. the Xangati vdi dashboard allows the administrator to investigate one level deeper by providing wmi capabilities to present the top processes driving CpU, memory and i/o.

the windows system viewer window provides a drill down within an alert recording (see Figure 6), which allows the administrator to rapidly assess which process is driving the CpU at the guest level which then has a cascading impact on the hypervisor/host. in this case, there is a process called wscript, which is grabbing 100% of the CpU and is clearly responsible for the performance shift in the converged infra-structure. if the administrator is going to remediate the environment from the storms, he can stop that process. the end result of Xangati’s automated insights is clear detail on what the problem is, where it is being caused in the infrastructure and even the precise insight on what should be done to make the CpU contention storm go away.

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In this case, there is a process called wscript which is grabbing 100% of the CPU and is clearly responsible for the performance shift in the converged infrastructure.

Figure 6: Xangati’s Window System Viewer Embedded within an Alert Recording

Integrating into Existing IT Operations EnvironmentsXangati’s vdi dashboard integrates with and enhances the current operational management solutions in place within an enterprise. Xangati’s solution supports a number of mechanisms that allow it to share its insights with pre-existing manager of manager (mom) solutions like microsoft systems Center operations manager that are run in a company’s network operations center (noC). For example, a Xangati storm event notifi-cation can be sent up to the mom via a snmp trap, which will inform the noC team that there is a performance storm in the infrastructure, that is at risk of affecting end-user experience. From there, the noC administrator can jump into the Xangati Ui to look at the alert recording to see what caused the issue. For instance, if there is a datastore contention storm driving up storage latency, he can forward the recording to a storage administrator who has his own storage element manager that can allow him take his analysis one level deeper.

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in addition, the Xangati vdi dashboard readily ties in with a service desk infrastructure. the component of the Xangati solution that provides this capability is the visual trouble ticket (vtt) portal (see Figure 7). the vtt portal is flexibly designed to integrate with a service desk self-help portal page from all market-leading solutions like BmC remedy and other incident management systems.

Figure 7: The Visual Trouble Ticket Portal

with the vtt, the service desk organization has the opportunity to enrich the incident management process that they already have in place. the process begins with an end-user is experiencing performance issues (e.g., slow login times, desktop tiling, etc.) and then fills out the vtt submission page. when they press the “create” button, it triggers a ticket within the service desk software and begins recording all the critical activity the service desk needs to know about what’s affecting that user’s desktop experience. that end-user driven dvr recording will automatically show up in a hyperlink appended to the service desk ticket and therefore will be available to anyone triaging the end-user issue. that recording has rich information about the converged infrastructure interactions affecting the desktop; it shows the health of the vdi session protocol i.e. hdX or pCoip and also displays the top processes driving the desktop microsoft windows os. in this manner, the service desk agent has all the critical information needed to triage the virtual desktop experience. if the cause of the desktop experience issue is infrastructure related then the ticket can be assigned to a higher tier in the escalation chain.

without these recordings, the incident management process for vdi is insufficient because written notes in a service desk ticket describ-ing an end-user experience issue cannot capture the infrastructure dynamics affecting that end user at that exact moment in time. with the recordings, the organization has the facts to triage the user issues.

Proactively Managing Infrastructure Capacitythe Xangati vdi dashboard extends its real-time performance insights into a seamless understanding of how short-term fluctuations affect long-term system capacity and summarizes that in a capacity health score. see Figure 5 for a screen shot. the Xangati solution trends capacity over time for CpU, memory, disk, network and will predict when additional capacity needs to be added for any of these resources. the power of this predictive capability is that the administrator will know with ample warning when he should, as an example; turn on new compute workload capacity through UCs manager or when to add more disk capacity to his netapp or emC storage array.

additionally, the Xangati system uniquely correlates performance storms to capacity saturation. if there is a high correlation between the performance issues and capacity saturation it provides Cisco vXi administrators with the clear business case to add incremental hardware capacity to the environment. given that every environment has financial constraints, this blend of performance and capacity management helps an organization know where it should apply its budget first. the Xangati solution clearly presents these insights in reports that detail out the most severe storms linked to capacity saturation. as a result, the Cisco vXi team can be assured that they are right-sizing capacity for the user workload.

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Figure 8: VDI Capacity Health Index Screen

Benefits of The Combined Xangati and Cisco VXI Smart SolutionCisco’s vXi with the Xangati vdi dashboard provides an architectural framework that delivers the best virtual desktop experience on the market. the high performance and resiliency of Cisco vXi combined with continuous health tracking of the environment with Xangati ensures proactive support for the end-user community. this proactive stance delivers a better performing, more available desktop than was previously available with a physical desktop computing environment.

moreover, the combined solution allows organizations to rapidly scale their implementations. a combined Cisco vXi and Xangati solution accelerates end-user acceptance and vdi adoption by eliminating performance-degrading storms. as a result, the desktop virtualization team will have the executive support to scale up their implementation across the organization and enjoy the significant surges in productiv-ity Cisco vXi computing offers. For example, Byod users accessing their full enterprise application suite means that they can get critical tasks completed from anywhere at any time. in addition to the productivity gains, it organizations are seeing substantial reductions in opeX. gartner reports that reductions in opeX have been recorded at up to 15%—in some organizations this is due to the removing of an entire support level within their incident management process.

Summary: Performance Assurance Delivers Optimal End-User Experiencegartner in their presentation entitled Client Virtualization: Tales from the Trenches notes that “performance management typically becomes a requirement as the virtual desktop environment scales. without end-to-end visibility of session performance, it’s extremely difficult to find the root cause when a problem arises.” Xangati’s software addresses this challenge by providing the only solution that proactively tracks the dynamic shifts in infrastructure activity as it relates to end-user experience.

Xangati allows administrators to instantly indentify storms and fix them before they have an adverse impact on the Cisco vXi user commu-nity. with the continuous tracking of performance health across the Cisco vXi environment, Xangati provides organizations an immediate roi by enriching existing service management processes. the incident management process is significantly improved by capabilities such as visual trouble ticket recordings and how they integrate with the service desk. the problem management process is similarly bolstered by the system’s ability to proactively track storms and provide instant notification as opposed to providing post mortem reports. overall, Xangati’s customers report a 10X improvement in time-to-problem resolution and a 75% jump in end-user satisfaction ratings with their desktop virtualization experience.

[For an overall summary of the unique architectural requirements for performance management in a virtualized data center watch this whiteboard session with Xangati’s Cto and Founder Jagan Jagannathan http://www.youtube.com/watch?v=hUU20w57rBi&feature=related]

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About XangatiXangati is the recognized leader in performance assurance for virtualization and cloud environments. the award-winning Xangati manage-ment dashboard (Xmd) suite of products includes the vi dashboard for server virtualization, vdi dashboard for desktop virtualization, and stormtracker™. Xmd’s unparalleled in-memory computing architecture allows for a live and continuous awareness of the entire infrastruc-ture end-to-end providing the ability to instantly identify and anticipate storms before they impact business user productivity.

Founded in 2006, Xangati, inc. is a privately held company with corporate headquarters based in Cupertino, California. Xangati is a Cisco developer network (Cdn) partner, vmware technology alliance partner and certified Citrix ready partner and has strategic technology partnerships with numerous other leading data center infrastructure companies. For more information, visit www.xangati.com.

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