Definition

redundancy

Part of the Storage hardware glossary:

Redundancy is a system design in which a component is duplicated so if it fails there will be a backup.

redundant
In information technology, the term redundant h...
(SearchStorage.com)
How to design a redundant WAN architecture
Many enterprises simply do not have an option w...
(SearchEnterpriseWAN.com)

Redundancy has a negative connotation when the duplication is unnecessary or is simply the result of poor planning.

This was last updated in April 2009

Posted by: Margaret Rouse

memory mirroring
- Memory mirroring is the division of memory on a server into two channels. The first channel is mirrored to the second channel, creating a redundant copy of memory. (SearchServerVirtualization.com)
double-parity RAID
- Double-parity RAID (redundant array of independent disks), also called diagonal-parity RAID, Advanced Data Guarding (RAID_ADG), or RAID-6, is a method of protecting against multiple storage drive f... (SearchStorage.com)
solid state drive (SSD) RAID
- Solid state disk RAID (redundant array of independent disks) is a strategy for improving performance that involves dividing and storing the same data on multiple solid state drives (SSDs). (SearchSolidStateStorage.com)

Storage hardware
- Terms related to storage hardware, including definitions about solid state drives and words and phrases about hard disk drives, tape drives, disk arrays and tiered storage.
Storage management
- Terms related to data storage management, including definitions about enterprise storage and words and phrases about storage infrastructure, storage capacity and hierarchical storage management (HSM).
Network hardware
- Terms related to network hardware, including definitions about cables or file servers and words and phrases about routers and switches.

How to design a redundant WAN architecture

Many enterprises simply do not have an option when it comes to WAN redundancy. Inter-site and Internet connectivity are core business requirements, and losing the lines of communication can be very... (SearchEnterpriseWAN.com)
Redundancy in an IP telephony network utilizing inline power

Where is it most important to have redundancy in an IP telephony network utilizing inline power? Get expert advice on the levels of redundancy, PoE switches and Spanning Tree Protocol (STP) here. (SearchUnifiedCommunications.com)
Dell to cut bonuses, 'eliminate redundancies'

Michael Dell, who last week resumed control of the company he founded, said there will be no bonuses this year and urged employees to "eliminate redundancies,'' according to an email. Dell, 41, sai... ()