Setting Usage Limits

•enable.usage.server = true

•usage.execution.timezone = America/New_York

•usage.stats.job.exec.time = 07:00. This will run the Usage job at 2:00 AM EST. Note that this will shift by an hour as the East Coast of the U.S. enters and exits Daylight Savings Time.

•usage.stats.job.aggregation.range = 1440

With this configuration, the Usage job will run every night at 2 AM EST and will process records for the previous day’s midnight-midnight as defined by the EST (America/New_York) time zone.

Note

Because the special value 1440 has been used for usage.stats.job.aggregation.range, the Usage Server will ignore the data between midnight and 2 AM. That data will be included in the next day's run.

15.2. Setting Usage Limits

CloudPlatform provides several administrator control points for capping resource usage by users. Some of these limits are global configuration parameters. Others are applied at the ROOT domain and may be overridden on a per-account basis.

Aggregate limits may be set on a per-domain basis. For example, you may limit a domain and all subdomains to the creation of 100 VMs.

There are two types of limits you can set. First, you can set limits based on the resource count, that is, restricting a user or domain on the basis of the number of VMs, volumes, or snapshots used.

In addition, CloudPlatform supports the customization model—need-basis usage, such as large VM or small VM. The resource types are broadly classified as CPU, RAM, Primary Storage, and Secondary Storage. The root administrator can impose resource usage limits by the following resource types for Domains, Projects, and Accounts:

•CPUs

•Memory (RAM)

•Primary Storage (Volumes)

•Secondary Storage (Snapshots, Templates, ISOs)

To control the behaviour of the needs-based usage feature, use the following configuration parameters:

Parameter Name

Description

 

 

max.account.cpus

Maximum number of CPU cores that can be

 

used for an account.

 

Default is 40.

 

 

max.account.ram (MB)

Maximum RAM that can be used for an account.

 

Default is 40960.

 

 

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Citrix Systems 4.2 manual Setting Usage Limits
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4.2 specifications

Citrix Systems, a leading provider of virtualization solutions and cloud computing technologies, released version 4.2 of its popular software, Citrix XenApp, which was previously known as Presentation Server. This version marked a significant evolution in providing users with remote access to applications and desktops, emphasizing simplicity, performance, and security.

One of the standout features of Citrix XenApp 4.2 is its improved application streaming capabilities. This technology allows applications to be delivered to users in real-time, reducing the need for extensive local installations and enhancing the user experience. With application streaming, administrators can efficiently manage applications on a central server while ensuring that users have immediate access to the necessary tools.

Another highlight of this version is the enhanced security measures put in place to protect sensitive data. Citrix XenApp 4.2 includes support for SSL encryption, providing a secure communication channel for data transmitted between the server and clients. This is particularly crucial for businesses that need to comply with strict data protection regulations. Additionally, the integration of endpoint security features ensures that unauthorized access to applications is minimized.

Performance enhancements are also a critical focus in this release. Citrix optimized the delivery of applications over various network conditions, ensuring that users experience minimal latency regardless of their location. This was achieved through the incorporation of SmartAccess and SmartControl technologies, which allow administrators to set policies based on user roles, device types, and network conditions. This level of granularity enables organization-wide security without compromising on usability.

The user experience was further improved with a revamped interface, making it easier for end-users to access their applications and data. Simplified menus, clear navigation paths, and the ability to customize user settings contributed to a more efficient workflow, allowing users to focus on their tasks rather than struggling with the software.

Finally, Citrix XenApp 4.2 was designed to be highly scalable. Organizations of all sizes could deploy this solution to deliver applications efficiently, adapting to their specific needs as their user base grows or changes. This flexibility is crucial for businesses looking to future-proof their IT investments while maintaining optimal performance.

In summary, Citrix XenApp 4.2 stands out with its enhanced application streaming, robust security features, improved performance under varying conditions, user-friendly interface, and scalability, making it an ideal choice for organizations seeking to leverage virtualization for remote access to applications and desktops.
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