In data storage terminology, thin provisioning is the term used to describe the consolidation and automated process of allocating just “the exact required amount” of server space at the time it is required. Thin provisioning is most commonly used in centralized large storage systems such as SANs and also in storage virtualization environments where administrators plan for both current and future storage requirements and often over-purchase capacity, which can result in wasted storage. Since thin provisioning is designed to allocate exactly what is needed, exactly when it is needed, it removes the element of “paid for but wasted” storage capacity. Additionally, as more storage is needed additional volumes can be attached to the existing consolidated storage system.
- disk thrashing
In systems that use virtual memory, the resulting condition of a hard drive being used excessively for virtual memory because the physical memory (i.e., RAM) is full. (The process of moving data into and out of virtual memory also is called swapping pages.) Disk thrashing considerably slows down the performance of a system because data […]
(1) In online discussions, a series of messages that have been posted as replies to each other. A single forum or conference typically contains many threads covering different subjects. By reading each message in a thread, one after the other, you can see how the discussion has evolved. You can start a new thread by […]
- thread bump
In online forums and other online discussion spaces bump is the word used to describe an action (e.g. a message post) so that a particular thread is returned to the top in the list of threads. Some users may even post a message with only the word “bump” to indicate they are posting only to […]
- three-chip projector
Projectors employing a three-chip design use a prism to split light from the lamp. Each primary color (red, green and blue) of light is then routed to its own Digital Micromirror Device (DMD) chip. The colors are recombined and routed out through the lens. Contrast with single-chip projector which uses a single DMD.
- three-click rule
In Web site design, the three-click rule is a non-standard measurement for usability. The three-click (or 3-click) rule notes that no product or piece of content should ever be more than three clicks away from your Web site’s main page. The three-click rule was made popular by Web designer Jeffrey Zeldman in his book, “Taking […]