By Henry Baltazar  |  Posted 2003-10-20 Print this article Print

Replication Choices

A wide variety of data replication technologies are available to suit the needs and budgets of many organizations.

  • Array-based solutions are rock-solid and well-trusted, but they are also expensive and proprietary. IT managers who are trying to protect transaction-sensitive applications and who already have investments in compatible storage systems should investigate these solutions. Examples: EMCs SRDF, Hitachi Data Systems TrueCopy

  • Host-based solutions are fairly inexpensive, but they use up valuable memory and CPU resources on servers. Host-based solutions are best used for asynchronous replication of data and would be good for protecting file servers and some database and e-mail servers. Example: NSI Softwares Double-Take

  • Network-based solutions, among the newest classes of replication technology, typically use intelligent appliances to replicate data over WANs. These systems will be a good choice for organizations that want to replicate from expensive storage systems at their primary site to less expensive storage at backup sites. Example: Kashyas KBX4000

    Discuss this in the eWEEK forum. Senior Analyst Henry Baltazar can be reached at henry_baltazar@ziffdavis.com.


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