FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -In computer storage, cold data refers to data that is rarely accessed, therefore considered “cold". Cold data is the opposite of hot data, which is data that is frequently accessed. To optimize storage costs, cold data can be stored on lower performing and less expensive storage media.

Detailed explanation-2: -Hot data is for analysts who need their data to be subsecond/ high concurrency to help them answer real-time questions. Cold data commonly sits in your data warehouse and is used for reporting and planning. And warm data is a balance between the two.

Detailed explanation-3: -Cold data storage refers to the storage of inactive data that is rarely used or accessed. Typically, cold data must be retained for business or compliance purposes on a long-term basis, if not indefinitely.

Detailed explanation-4: -The classifications are often referred to as hot, warm and cold (see Table 1). Hot data is frequently accessed on faster storage, warm data is accessed less frequently and stored on slightly slower storage, and cold data is rarely accessed and stored on even slower storage.

Detailed explanation-5: -Hot data is data that is frequently accessed and transferred within a given system. Hot data is always in demand and in transit, not stored for long periods of time, and archive requirements for dealing with hot data may be more than those for cold data that is likely to be collected and then sit in a static archive.