Tiered storage is an underlying principle of ILM (information lifecycle management). It is a storage networking method where data is stored on various types of media based on performance, availability and recovery requirements. For example, data intended for restoration in the event of data loss or corruption could be stored locally — for fast recovery — while data for regulatory purposes could be archived to lower cost disks.
Today’s tiered storage infrastructures range from simple two-tier architecture consisting of SCSI or fibre channel attached disk and tape to more complex infrastructures, which in some cases are comprised of five-to-six tiers. Regardless of the number of tiers, organizations are looking to tiered storage and ILM to lower cost and improve operational efficiency.
Implementing tiered storage infrastructures can dramatically decrease the cost associated with achieving an RPO and RTO of zero. Classification of data can provide different RPOs and RTOs based on application and business requirements. Policy-based data migration ensures that the right data is in the right place at the right time.
- tight coupling
(1) In computer science, tight coupling (or tightly coupled) is a type of coupling that describes a system in which hardware and software are not only linked together, but are also dependant upon each other. In a tightly coupled system where multiple systems share a workload, the entire system usually would need to be powered […]
- tiled windows
Windows window arranged so that they do not overlap each other. Overlapping windows are often called overlaid or cascading windows.
- time code
A digitally encoded signal that is recorded on videotape to identify each frame of video by hour, minute, second and frame number. There are two kinds of recorded signal: longitudinal time code (LTC) and vertical interval time code (VITC). [Adapted from Extreme Exposure]
- time lapse
In digital photography, it’s the name of the process used to capture a set of images at preset intervals of time.
An interrupt signal generated by a program or device that has waited a certain length of time for some input but has not received it. Many programs perform time-outs so that the program does not sit idle waiting for input that may never come. For example, automatic bank-teller machines perform a time-out if you do […]