disk-to-disk-to-tape
Home > Storage Technology Definitions - Disk-to-disk-to-tape
SearchStorage.com Definitions (Powered by WhatIs.com)
EMAIL THIS
LOOK UP TECH TERMS Powered by: WhatIs.com
Search listings for thousands of IT terms:
Browse tech terms alphabetically:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

disk-to-disk-to-tape



Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us   

DEFINITION - Disk-to-disk-to-tape (D2D2T) is an approach to computer storage backup and archiving in which data is initially copied to backup storage on a disk storage system and then periodically copied again to a tape storage system (or possibly to an optical storage system). Traditionally, many businesses have done backup directly to relatively inexpensive tape systems. However, for many computer applications, it's important to have data immediately ready to be restored from a secondary disk if and when the data on the primary disk becomes inaccessible (for example, if the server fails). The time to restore data from tape would be considered unacceptable. On the other hand, tape is a more economical alternative for long-term storage (archiving). Because it's also more portable, tape is often used for off-site backup and restoration in case of a disaster.

Disk-to-disk-to-tape is often used as part of a storage virtualization system. In such a system, data that is more likely to require restoration from a backup device may be kept on an on-site or off-site disk storage system; data, such as e-mail, that has less value over time, may be migrated on a set schedule to tape. The storage administrator can express a company's needs in terms of storage policies rather than in terms of the physical devices to be used.

LAST UPDATED: 20 Jul 2004

Read more about disk-to-disk-to-tape:
- SearchStorage.com's Maryann Tripp includes D2D2T in "The ultimate backup equation."
- SearchStorage.com also offers "A resource guide for disk-based backup."
- Targetfour is an example of a company that provides D2D2T solutions.


Do you have something to add to this definition? Let us know.
Send your comments to techterms@whatis.com


BROWSE BY TAG
Data Backup,   Disk-based backup,   Primary Storage or Storage Hardware,   Disk drives,   VIEW ALL TAGS

Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us   


RELATED CONTENT
Storage Decisions Chicago 2009 Session Downloads
Download all the sessions from the Storage Decisions Chicago 2009 conference on topics including backup, SANs, storage virtualization, storage...
Storage Decisions Session Downloads: Backup Technologies Track (Chicago 2009)
This Storage Decisions Chicago 2009 track explores topics including data deduplication, virtual tape libraries and managing your backup budget.
Remote-office backups made easy
With plenty of economical disk-based backup products and cloud-based services available, remote offices can be brought back into the fold.

RELATED GLOSSARY TERMS
Terms from Whatis.com − the technology online dictionary
disk cache  (SearchStorage.com)
disk striping  (SearchStorage.com)




Search disk-to-disk-to-tape at SearchStorage and SearchStorageChannel
TechTarget Storage Media
Storage Magazine View this month\\'s issue and subscribe today.
Storage Decisions Apply online for free conference admission.
SearchStorage.com
HomeNewsMagazineTopicsLearningMultimediaWhite PapersBlogsEventsAbout Us

About Us  |  Contact Us  |  For Advertisers  |  For Business Partners  |  Site Index  |  RSS
TechTarget provides technology professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective purchase decisions and managing their organizations' technology projects - with its network of technology-specific websites, events and online magazines.

TechTarget Corporate Web Site  |  Media Kits  |  Site Map




All Rights Reserved, Copyright 2000 - 2009, TechTarget | Read our Privacy Policy
  TechTarget - The IT Media ROI Experts