Consolidation

Techopedia explains Consolidation

In a computing context, two common terms are server consolidation and storage consolidation.

Server Consolidation: This results in a reduced number of servers and server locations within an organization. The intended result is more efficient use of server resources and occupied space. However, it also increases the complexity of the servers, data and applications which may be challenging for users. Server virtualization attempts to address the problem by masking the complexity from users. Another option is to use blade servers, which are actual servers in the form of modular circuit boards on a card, occupying less rack space and consuming less power. Often each one is dedicated to a single application.

Storage Consolidation: Also called storage convergence, this is a method of centralizing data storage through any one of three architectures:

1. Network Attached Storage (NAS): Here dedicated storage hard drives do not have to compete with other computers for processing resources.
2. Redundant Array of Independent Disks (RAID): Here data is located on multiple disks but appears as a single logical drive. RAID benefits include: sharing input/output operations and fault tolerance and minimizing downtime and the risk of complete data loss.
3. Storage Area Network (SAN): Here fiber channel technology is used providing high throughput, data sharing, data migration and service to many clients (also called subscribers) over a large geographical area. SANS is the most sophisticated storage consolidation method of the three and may also be referred to as thin provisioning. However, thin provisioning is designed to provide only the storage space needed when it is needed; thus it is very efficient use of resources and storage capacity.