ITU Online

Definition: RAID (Redundant Array of Independent Disks) RAID stands for Redundant Array of Independent Disks. It is a data storage virtualization technology that combines multiple physical disk drive components into a single logical unit for the purposes of data redundancy, performance improvement, or both. Understanding RAID (Redundant Array of Independent Disks) RAID technology is pivotal …

What Is RAID (Redundant Array of Independent Disks)? Read More »

Definition: Virtual Tape Library (VTL) A Virtual Tape Library (VTL) is a data storage solution that emulates physical tape storage, but uses hard disk or other high-speed storage media to store data. It is designed to integrate seamlessly with existing tape backup processes, providing a bridge between older tape-based backup systems and modern disk-based solutions. …

What Is a Virtual Tape Library (VTL)? Read More »

Definition: Disk Array A disk array is a storage system consisting of multiple disk drives, which are organized and managed as a single entity to improve performance, increase data redundancy, and optimize storage capacity. Disk arrays are foundational to modern data storage solutions, commonly used in enterprise environments where large volumes of data are processed …

What Is Disk Array? Read More »

Definition: Solid State Drive (SSD) A Solid State Drive (SSD) is a type of non-volatile storage media that stores and retrieves digital data using integrated circuit assemblies as memory. Unlike traditional mechanical hard drives that use spinning disks and movable read/write heads, SSDs employ flash-based memory, which is faster, more reliable, and more energy-efficient. SSDs …

What Is Solid State Drive (SSD)? Read More »

Definition: Asynchronous Replication Asynchronous replication is a data replication model used primarily in distributed systems to enhance data redundancy and availability without impacting system performance. In this model, data changes (writes) are first committed to the primary storage and then replicated to the secondary (backup) storage without waiting for confirmation that the replication has completed. …

What Is Asynchronous Replication? Read More »

Definition: GraphQL GraphQL is a query language for APIs and a runtime for executing those queries with your existing data. GraphQL provides a complete and understandable description of the data in your API, gives clients the power to ask for exactly what they need and nothing more, makes it easier to aggregate data from multiple …

What Is GraphQL? Read More »

Definition: Ethernet Frame An Ethernet Frame is a fundamental unit of data transmission in local area networks (LANs) that use Ethernet technology. It encapsulates network layer packets in a digital frame that includes both the destination and the source hardware addresses (MAC addresses), along with error-checking capabilities to ensure the integrity of the data as …

What Is Ethernet Frame? Read More »

Definition: Graph-Based Data Model The Graph-Based Data Model is a sophisticated approach to data management and analysis, particularly effective for scenarios involving complex relationships between data points. This model visualizes data as nodes (entities) and edges (relationships), enabling highly interconnected data representation. This framework is particularly suited for applications that require intricate relationship mapping and …

What Is Graph-Based Data Model? Read More »

Definition: Entity-Attribute-Value Model (EAV) The Entity-Attribute-Value model (EAV) is a data model that is used to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. EAV is designed to efficiently manage …

What Is Entity-Attribute-Value Model (EAV)? Read More »

Definition: Python Pandas Python Pandas is an open-source data analysis and manipulation tool built on top of the Python programming language. It offers data structures and operations for manipulating numerical tables and time series, making it an indispensable tool for data science, statistics, and machine learning. Understanding Python Pandas Developed by Wes McKinney in 2008, …

What Is Python Pandas? Read More »

Definition: Pretty Good Privacy Pretty Good Privacy (PGP) is a data encryption and decryption program that provides cryptographic privacy and authentication for data communication. PGP is used for securing the transmission of data between users, encrypting texts, e-mails, files, directories, and whole disk partitions. It uses a combination of strong public-key and symmetric key cryptography …

What Is Pretty Good Privacy? Read More »

Definition: Software-Defined Data Center A Software-Defined Data Center (SDDC) is a data center where all infrastructure elements—networking, storage, CPU, and security—are virtualized and delivered as a service. Control of the data center is fully automated by software, meaning hardware configuration is maintained through intelligent software systems. This approach allows for a highly flexible and scalable …

What Is Software-Defined Data Center? Read More »