Feature

Types of Block Data Replication

Ezine

This article can also be found in the Premium Editorial Download "Storage magazine: Inside the new Symmetrix DMX model offerings."

Download it now to read this article plus other related content.

All block data replication schemes are not created equal. Some are implemented as part of the storage array, others as part of a host server and still others within the network. Replication can also happen synchronously--where the local application waits for confirmation from the mirror before a write is completed--or asynchronously, where there can be some lag between the source and the target data. The following matrix shows some sample replication products and where they fit in. (Note that some of these products may be applicable in more than one box.)

  SYNCHRONOUS ASYNCHRONOUS
Array EMC SRDF, Hitachi TrueCopy, IBM PPRC HDS TrueCopy, EMC SRDF, IBM PPRC

    Requires Free Membership to View

    Login

Host Veritas Volume Replicator Veritas Volume Replicator
Network FalconStor IPStor Mirroring Topio SANsafe, DataCore SANsymphony, Asynchronous Internet Mirroring (AIM)

This was first published in February 2003

Join the conversationComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.
    Back to top