Browse Definitions :
Definition

clustered storage

Contributor(s): Stan Gibilisco

Clustered storage is the use of two or more storage servers working together to increase performance, capacity, or reliability. Clustering distributes work loads to each server, manages the transfer of workloads between servers, and provides access to all files from any server regardless of the physical location of the file.

Two basic clustered storage architectures exist, known as tightly coupled and loosely coupled;

A tightly coupled cluster has a proprietary physical backplane into which controller nodes connect. While this backplane fixes the maximum size of the cluster, it delivers a high-performance interconnect between servers for load-balanced performance and maximum scalability as the cluster grows. Additional array controllers, I/O (input/output) ports, and capacity can connect into the cluster as demand dictates.

A loosely coupled cluster offers cost-effective building blocks that can start small and grow as applications demand. A loose cluster offers performance, I/O, and storage capacity within the same node. As a result, performance scales with capacity and vice versa. Although the clusters can grow quite large in theory, the scalability is limited by the performance of the interconnect and the resulting tradeoffs in communication with the cluster controllers.

Experts cite several trends that have begun to drive a movement toward clustered storage in recent years, including a general shift to cluster computing, an increase in available low-cost, high-speed storage solutions, and explosive growth in the amount of digital content requiring storage.

This was last updated in April 2013

Continue Reading About clustered storage

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • computer worm

    A computer worm is a type of malicious software program whose primary function is to infect other computers while remaining ...

  • Single Sign-On (SSO)

    Single sign-on (SSO) is a session and user authentication service that permits a user to use one set of login credentials (e.g., ...

  • Certified Information Systems Auditor (CISA)

    Certified Information Systems Auditor (CISA) is a certification issued by ISACA to people in charge of ensuring that an ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

SearchStorage

  • VRAM (video RAM)

    VRAM (video RAM) is a reference to any type of random access memory (RAM) used to store image data for a computer display.

  • Kilo, mega, giga, tera, peta, exa, zetta and all that

    Kilo, mega, giga, tera, peta, exa, zetta are among the list of prefixes used to denote the quantity of something, such as a byte ...

  • flash memory

    Flash memory, also known as flash storage, is a type of nonvolatile memory that erases data in units called blocks.

Close