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Data Backup Glossary (Letter E)

July 28th, 2011

Data Backup Glossary (Letter E)

A cohesive, robust, interconnected whole. The EVault cloud-connected ecosystem is built on a shared technology platform, leveraged in every deployment—software, appliances, software as a service (SaaS), and managed services—that creates a seamlessly integrated, cloud-connected data protection ecosystem.

Edge computing
A topological paradigm in which applications, data, and computing power (services) are pushed away from centralized points to the logical extremes of a network. Edge computing replicates fragments of information across distributed networks of web servers, which may be vast and include many networks. Edge computing is also referred to as mesh computing, peer-to-peer computing, autonomic (self-healing) computing, grid computing, and other names implying non-centralized, nodeless availability.

Emergency power off
Also referred to as an EPO switch, emergency power off (EPO) is a button or switch that shuts down the power in a room or network of electrical circuits. Typically used in data centers with a large number of computers using large amounts of electricity, the EPO is meant to be activated by a human only in emergency situations when it is necessary to cut the power if human life is in jeopardy or if there is the potential for major damage to the building or equipment (for example, in the case of a fire or electrocution). The sudden loss of power will inevitably lead to the loss of some data, and the EPO is not meant to be used under normal circumstances.

Electron-trapping optical memory
A method of erasable optical storage. Information is written, or stored, by a low-power laser tuned to a specific frequency. The laser elevates the energy level of electrons to a trapped state. The data is read by a second laser that returns the elevated electrons to their ground state.

The conversion of plaintext to encrypted text with the intent that it only be accessible to authorized users who have the appropriate decryption key.

Enhanced capacity cartridge system
In data storage technology, enhanced capacity cartridge system (ECCST) is a double length tape cartridge with a nominal uncompressed capacity of approximately 800 Mbytes.

Enterprise content management
Enterprise content management (ECM) describes the technologies used by organizations to capture, manage, store, and control enterprise-wide content, including documents, images, e-mail messages, instant messages, video, and more. ECM software is used to assist in content control associated with business processes, and can be used to assure compliance with regulations (such as Sarbanes-Oxley , HIPPA, and others). ECM has emerged from the convergence of many related technologies such as document management, web content management, and collaboration.

Equipment footprint
The physical area that is occupied only by data center equipment. This area does not include aisles between racks or any space left at end of equipment rows.

Enterprise storage
A centralized storage system used by a large business or organization to manage data. Enterprise storage also indicates processes for data sharing and connectivity. Enterprise storage is different from consumer or home computer storage in terms of the size of the storage system, the amount of data handled by the system, the number of users accessing the system, and also the technology used to create the storage system. Enterprise storage systems usually focus on providing the networking and management operations for data storage, backup, disaster recovery, and archiving.

In Information Technology, a backup or the process of backing up refers to making copies of data so that these additional copies may be used to restore the original after a data loss event. The verb form is back up in two words, whereas the noun is backup (often used like an adjective in compound nouns).

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