In “IT as a Service Reference Architecture“, we presented a a categorization of the the functionality and the products that are needed in order to construct an IT as a Service system. Purposely missing from this architecture was the question of how to monitor the performance of the services delivered from the service catalog via the underlying policies and automation in the IT as a Service stack.
Articles Tagged with Xangati
Virtualization (the underlying foundation of a cloud) introduces a set of challenges to how one should monitor the performance of the infrastructure and the applications. These challenges are:
- Unlike physical systems that are mostly dedicated to specific applications, virtual systems are both shared and dynamic. This makes inferring the performance of the infrastructure by looking at resource utilization statistics ineffective. Leading edge Infrastructure Performance Management vendors like AppFirst, Akorri, CA|NetQos, Virtual Instruments and Xangati are taking an Infrastructure Response Time approach to this problem that avoids the issues of relying upon resource metrics, and provides a true picture of how the infrastructure is actually performing.
IT Operations groups who are responsible for managing the availability, performance and capacity of a virtual environment in support of performance critical tier 1 applications have two fundamental goals to achieve:
- Ensure that the environment does not become unavailable or perform poorly due to a lack of physical resources (CPU, memory, network I/O capacity, SAN I/O capacity and capacity for I/O operations in the storage array)
- Ensure that the entire virtual infrastructure performs as expected in support of performance critical applications.
Both VMware (View 4) and Citrix (XenDesktop 4) are increasing the marketing and sales pushes for their hosted virtual desktop offerings. Hosted Virtual Desktop is how we refer to idea that users use a thin client (in hardware or software) to connect via a connection broker and a remote access protocol (VMware PCoIP, Microsoft RDP, or Citrix HDX) to their operating system, applications and data which are running as a guest on a host with a hypervisor (VMware ESX, VMware ESXi or Citrix XenServer).