BACKGROUND IMAGE: iSTOCK/GETTY IMAGES

Storage

Managing and protecting all enterprise data

iSTOCK/GETTY IMAGES

Types of Block Data Replication

All block data replication schemes are not created equal.

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
Host Veritas Volume Replicator Veritas Volume Replicator
Network FalconStor IPStor Mirroring Topio SANsafe, DataCore SANsymphony, Asynchronous Internet Mirroring (AIM)
Article 13 of 21
This was last published in February 2003

Dig Deeper on Data storage strategy

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

Get More Storage

Access to all of our back issues View All

-ADS BY GOOGLE

SearchDisasterRecovery

SearchDataBackup

SearchConvergedInfrastructure

Close