View has always had a concept of virtual desktop pools. At the simplest level, a pool is just a grouping of resources the user can access; these can be virtual desktops, blade PC or terminal servers. Depending on your settings, pools fall into two main types – an Automated Pool or a Manual Pool. With an automated pool, virtual desktops are created upfront for a number of users, and then on-demand as more users access the desktops. Below is a bulleted list which outlines the pool types, and what features are supported with them:
- Automated Pool – For virtual desktops only, supports Local Mode, PCoIP and Persona Management – and critically supports the View Composer Linked Mode feature. With the automated pool there are two modes called Dedicated and Floating which used to be called Persistent and Non-Persistent mode. Although the terms have changed, they essentially mean the same thing. With Dedicated mode, the user grabs a virtual desktop from the pool, and it remains theirs forever. With a Floating pool, a user is still allocated a virtual desktop, but when the user logs out, the virtual desktop is handed back to the pool to be used by another user. Floating pools are closely aligned with a more concurrency based perspective of providing virtual desktops – you only need the number of virtual desktops that match the total concurrent load at any one time. As you might expect, the desktop has to be locked down with policies and other tools, especially when the user is never returned to the same desktop. It’s worth mentioning that you cannot switch a Dedicated pool to a Floating pool, or vice versa.
- Manual Pool – For virtual desktops and physical computers such as blade PCs. Manual pools support all the features of an Automated pool except, critically, View Composer Linked Mode is not supported, however the local mode feature is supported.
- Terminal Services Pool – None of the advanced features are supported, so, critically, there is no PCoIP support for these legacy RDP-enabled systems.
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This was first published in September 2010