Hp Storage Mirroring Software Manuel d'utilisateur télécharger pdf (Page 9)

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Replication

Replication is the real-time transmission of file changes. Unlike other related technologies, which are

based on a disk driver or a specific application, the Storage Mirroring replication process operates at

the file system level and is able to track file changes independently from the file’s related application.

In terms of network resources and time, replicating changes is a more efficient method of maintaining

a real-time copy of data than copying an entire file that has changed.

After a source and target have been connected through Storage Mirroring, file system changes from

the user-defined data set are tracked. Storage Mirroring immediately transmits these file changes to

the target server. This real-time replication keeps the data on the target up-to-date with the source

and provides high availability and disaster recovery with minimal data loss.

Unlike mirroring which is complete when all of the files have been transmitted to the target,

replication continuously captures the changes as they are written to the source. Replication keeps the

target up-to-date and synchronized with the source.

Source Target

User or application updates

part of a file

Only the changed

portion of the file is

Up-to-date copy maintained

on the target

replicated

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Hp Storage Mirroring Software Manuel d'utilisateur Page 9