Ground citrix apps

ground citrix apps | eBook | App attack. 1. Back to contents. ↑. ← Pg. 2 | Pg. 4 → Built from the ground up for enterprise-class security, Citrix enables. desktops and /or applications also facilitate user mobility by allowing users full BVRMC implemented Citrix XenApp™ to built from the ground up for. Implement zero trust security · Accelerate journey to SASE · Protect apps and APIs We've reimagined the employee experience from the ground up. DBEAVER AUR Онлайн Уважаемые форумчане, сообщаю Для вас, что.

This course is recommended for solution designers such as Architects, Consultants, and Engineers. Students will gain hands-on experience installing and configuring hosted application and desktop virtualization solutions from the ground up. Upon completion of the course, students will have the skills required to successfully deploy XenDesktop 7. Before taking this course, Citrix recommends that students have:. This course provides students with the skills required to successfully deploy a complete Citrix hosted application and desktop virtualization solution in a Windows Server R2 environment.

Upon course completion, students will be able to build a XenDesktop 7. Upon successful completion of this course, learners are able to:. If you would like to know more about this course please contact us. Citrix Virtual Apps and Desktops at its core is primarily a presentation and delivery platform.

Any shared administrative domain of technologies on which Citrix is dependent can impact the efficacy of the Citrix DR solution. Of similar importance and occasionally not fully accounted for by customers are recovery considerations for file services user data and business data on shares, and so on and application back-ends with which Citrix-hosted applications and desktops interface. Referencing the earlier point on application readiness, a Citrix DR platform can be designed to recover in short timespans.

However, if these core use case dependencies do not possess a recovery plan with RTO similar to Citrix or no recovery plan at all, this plan can affect Citrix successfully failing over in DR as expected but users being unable to perform their job functions as these dependencies remain unavailable.

Take for instance a hospital who hosts their core EMR application on Citrix. Clinical staff would likely be forced to use offline processes pen and paper during this time. Such an outcome cannot be congruent to the overall expectation of the business for recovery time or user experience. Understanding HA vs.

DR is critical in aligning to organizational needs and meeting recovery objectives. This guide interprets HA and DR as follows:. While HA tends to be embedded into design specifications and solutions deployment, DR is largely concerned with the orchestration planning of personnel and infrastructure resources to invoke recovery of the service. Can HA include DR? For enterprise mission-critical IT services, this concept is common.

Take for instance the second example in the HA description above, coupled with appropriate recovery of other non-Citrix components related to the solution, would be regarded as a highly available DR solution wherein a service Citrix fails over to an opposing data center. That particular architecture can be implemented as Active-Passive or Active-Active in various multi-site iterations such as Active-Passive for all users, Active-Active with users preferring one data center over another, or Active-Active with users being load balanced between two data centers without preference.

It is important to note that when designing such solutions, standby capacity must be considered, accounted for, and load monitored on an ongoing basis to ensure capacity remains available to accommodate DR, if it is required. It is also essential that DR components be kept up-to-date with production to maintain the integrity of the solution.

This activity is often overlooked by customers who design and deploy such a solution with the best of intentions, then start consuming more platform resources in production, and forget to increase available capacity to retain the DR integrity of the solution. In the context of Citrix, spanning Citrix administrative domains Citrix Site, PVS Farm, and so on between two data centers such as two geo-localized facilities as per published guidance would not constitute DR and for some components such as StoreFront Server Groups.

Supportability constraints between geos also extend to Citrix Site and Zone design sometimes, due to latency maximums between satellite controllers and the databases per published guidance. As many Citrix components share dependencies such as databases, stretching administrative boundaries between the two data centers would not protect against several key failure scenarios. If databases became corrupt the failure domain would impact application services at both facilities.

To regard an HA Citrix solution as being sufficient for DR, we recommend the second facility does not share key dependencies or administrative boundaries. For instance, create separate Sites, Farms, and Server Groups for each data center in the solution. By enabling a recovery platform to be as independent as possible we reduce the impacts of component-level failures from affecting both production and DR environments.

Tier classifications for DR are an important aspect of an organizations DR strategy as it provides clarity into application or service criticality which in turn dictates the RTO and thus costs for accomplishing that level of recovery.

Being able to break down various inter-dependencies into different classifications based on business criticality and RTO can help optimize cost-sensitive DR cases. Below is a set of sample DR tier classifications to serve as a reference when assessing the Citrix infrastructure services, its dependencies, and critical applications or use cases and associated to VDAs hosted on Citrix. DR tiers are outlined in order or recovery priority with 0 being the most critical.

Organizations are encouraged to apply or develop a DR tiering classification aligning with their own recovery objectives and classification needs. This classification is largely for core infrastructure components. These components are always available in the DR location as they are dependencies for other tiers, and not in an isolated network segment.

They need to be provisioned and maintained alongside their production equivalents. Applications or virtual desktops upon which the business depends on to carry on core business activities would typically be contained in this tier. If provisioning into cloud, considerations discussed later , need to be accounted for as they can impact RTO targets.

Applications or use cases which are key to business operations, but whose short-term unavailability is unlikely to cause serious financial, reputation, or operational impacts. These applications are either recovered from backups or recovered as lowest priority by automated recovery tools.

Applications with negligible outage impact are unavailable up to one week. These applications are likely recovered from backups. Applications, infrastructure, and VDIs whose outages also have a negligible impact on business operations and can be restored over an extended time. They can have an extended RPO as well, or not at all depending on their nature. These RPOs can be recovered from backups or built brand new in DR and is regarded as the last tier to be recovered. This circumstance may not always be the case however for every Citrix use case.

Treating every Citrix use case as Tier 0 when some can fall into Tier 1 or higher can impact the overall cost and complexity of the DR process. The second question stresses classification by Citrix use case and lends its importance most significantly in cloud environments which is discussed later in more detail.

Such considerations can also influence application or use case isolation silos in production to take advantage of deployment flexibility in a DR platform. When establishing a DR design for Citrix, bringing the discussion beyond the scope of Citrix itself is useful to set expectations to business units. This gap creates a recovery time disparity between the two platforms and can provide a misleading user experience during the recovery.

Citrix is available immediately but key applications are not functional. Setting expectations at the outset provides appropriate visibility to all stakeholders on what the recovery experience can look like. In some situations, a customer can want to keep Citrix on hot standby always on in the opposing facility but manually control the failover of the access tier, to avoid misunderstandings on platform availability.

In this section, common Citrix recovery strategies are outlined including their pros and cons, and key considerations. Other recovery capabilities or variations of the following themes for Citrix are possible, this section is focusing on some of the most common. In addition, this section illustrates how responses to the core questions indicated early on influence the DR design.

Correlating too several of the earlier DR questions, the following question topics have Citrix DR design implications as follows:. The following list outlines various common recovery options for Citrix. Adaptations of each exist in the field, however for the sake of comparison we are outlining basic versions of each. The options are organized starting with the simplest often higher RTO and lower cost through the more advanced often lower RTO but higher cost. The ideal option for a given organization is to align to recovery time for hosted applications or use cases, in addition to the IT skills, budget, and infrastructure available.

It is not that it is technically impossible to accomplish, but the level of complexity involved in accomplishing them can make recovery riskier and more prone to human error. Useful for less mature IT organizations and organizations with limited IT operations budgets and can allow for extended outages to recover core business services. Assumes backups are tested for restore integrity regularly and follows clearly documented recovery processes.

Useful for less mature IT organizations and organizations with limited IT operations budgets. Useful for enterprise organizations with appropriate resources and budget for DR facility. This solution relies on the same storage replication of the previous option but includes DR orchestration technologies to recover VMs in particular order, adjust NIC configurations if needed and so on. The latter can be appealing for cloud recovery to reduce operating costs, with caveats.

This manual option can be useful for scenarios where application back-ends can require longer recovery time but would add confusion for users if Citrix was fully available and applications were not. This model assumes a mature IT organization and enough WAN and computes infrastructure are available to support failover. This model assumes a mature IT organization and enough WAN and computes infrastructure to support failover.

This functionality is useful in environments with local data center proximity to each other, or in situations where data centers can be remote but with the means to pin users to preferred data centers often driven by advanced StoreFront configurations and GSLB to a lesser extent for multi-site scenarios. Disaster Recovery involving on-prem to cloud platforms or cloud-to-cloud comes with its own set of challenges or considerations which often do not present themselves in on-prem recovery scenarios.

The following key considerations can be addressed during DR design planning to avoid missteps which can render the DR plan applying cloud infrastructure either invalid, cost prohibitive, or unable to meet target capacity in the event of DR. This limit can require scaling out gateways or perhaps using multiple VPCs if there is an AWS if these are critical to the cloud architecture.

Many virtual firewalls have licensed limits on the throughput they can process or maximums even at their highest limit. This constraint can require scaling out the number of firewalls and load balancing them in some manner. When establishing throughput sizing calculations, assume the full DR capacity load. Capture the following data per concurrent user:. For the above metrics, it can be useful to gather data on current traffic patterns to and from VDAs in production.

It is also important to consider what other data flows unrelated to Citrix are also anticipated to be using these network paths. Be sure to engage the network and security teams in planning Citrix DR to ensure any bandwidth estimates traversing security zones and network segments is understood and can be accommodated for. There are potentially complex licensing considerations for Microsoft Desktop OS instances running on different cloud platforms.

Microsoft revised their cloud licensing rights in August which can affect VDI cost implications in some deployment scenarios. Refer to the most current Microsoft guidance when determining the use case architecture. Customers are drawn to cloud by the appeal of paying for capacity only when it is needed. This solution can reduce DR costs dramatically by not paying for reserved infrastructure whether it is used or not. However at large scales, a cloud provider cannot commit to an SLA of powering on hundreds or thousands of VMs at once.

This solution becomes particularly challenging if the VDA footprint for DR is anticipated to run into the hundreds or thousands of instances. Cloud providers tend to maintain bulk capacity for various instance sizes on-hand; however, this provider can vary from moment to moment.

If a disaster affecting a geographical area occurs, there can be contention from other tenants also requesting on-demand capacity. Citrix recommends first engaging with your cloud provider to determine the viability of powering on the anticipated capacity within the RTO timeframe and if it can be met with on-demand instances or not.

At large scales, it can be worthwhile provisioning across various cloud regions, and adjusting the architecture accordingly.

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