IBM describes Big Data through the phenomenon of the $4Vs,$ shown below. Identify the $"V"$ illustrated by data at rest.

Data at Rest

Data in Motion

$=$ Streaming data, milliseconds

$==$ to seconds to respond

$==0$

Data in Many Forms

Data in Doubt

Uncertainly due to data

inconsistericy & incompleteness,

ambiguities, latency, deception,

model approximations

Volume

Veracity

Variety

Velocity