# Storage

A store (from Latin spicarium ' grain store ', from spica ' ear of corn '), depending on the context also called warehouse , depot , filing , buffer , supply or reserve , is a place or a facility for storing material or immaterial ( data storage ) objects .

## Basics

Storage tanks can be of natural origin or man-made.

In most cases, people are stored for a limited period of time with the intention or at least the option of removing what has been stored for use at a later point in time. Such often intermediate storage, buffer or storage memory designated serve to compensate for timing differences between inflow / supply and drainage / demand.

Storage for an indefinite or permanent period is less common. For such storage, the term (final) storage or storage is more common.

## Theoretical foundations

The stored amount and thus the filling level of the storage tank results mathematically as a time integral over the difference between the inflow rate and the outflow rate in the time interval${\ displaystyle t \ in [0, T] \ colon}$

${\ displaystyle {\ text {Stored amount}} (T) = \ int _ {0} ^ {T} ({\ text {Inflow rate}} (t) - {\ text {Outflow rate}} (t)) \; \ mathrm {d} t + {\ text {Stored amount}} (0)}$

If the storage capacity (i.e. the maximum possible fill level) is exceeded, an overflow may occur.

A memory is an important element in control engineering . It can be used for smoothing. In a system with several storage tanks of the same type, vibrations can occur.