eG Monitoring
 

Measures reported by CtxXcXDAppDiskTest

Citrix AppDisk, a new application layering technology in XenApp and XenDesktop 7.8, allows IT to package and deliver apps separately from golden images.

AppDisk allows IT to create, deploy and update fewer master images. Instead of installing applications alongside the OS, IT can package and deliver them separately in departmental AppDisks. An AppDisk is either a virtual hard disk or virtual machine disk file, depending on the hypervisor - either Citrix XenServer or VMware ESXi.

The virtual disks that house the applications act as an independent storage layer that attaches to the base golden image when users boot a XenApp or XenDesktop session. The hypervisor controls the process of attaching the AppDisk's drives to the base image. From the users' perspectives, the apps contained in the AppDisks perform as if they are installed locally on the virtual machine (VM).

If an AppDisk is unable to perform application delivery, then you may want to know if the AppDisk was created properly and is ready for use. This can be ascertained using the CtxXcXDAppDiskTest test. This test auto-discovers the AppDisks, and for each AppDisk reports the state of the AppDisk and the number of application packages installed on it. Detailed diagnostics provided by this test also reveal which applications are installed on which AppDisk.

Outputs of the test : One set of results for the Delivery Controller being monitored

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
AppDisk_state Indicates the current state of this AppDisk.   The values that this measure reports and their corresponding numeric values are listed in the table below:

Measure Value Numeric Value
Unknown 0
Ready 1
Populating 2
Creating 3

Note:

By default, this measure reports the above-mentioned Measure Values to indicate the state of an AppDisk. However, in the graph of this measure, the same will be represented using the numeric equivalents.
No_of_packages Indicates the number of application packages available in this AppDisk. Number Use the detailed diagnosis of this measure to know which applications are installed on this AppDisk.