Quantum DXi4701, User Manual

Page: 143 / 440

Chapter 6: DXi4701 Replication
Performing Data Replication
Quantum DXi4701 User’s Guide 117
For information about configuring and using OST optimized duplication
and Automatic Image Replication, see Replicating OST Data on
page 261.
Multiple Target
Replication
The DXi4701 can send replicated data to multiple target systems. First,
configure up to two replication targets (see Adding a Replication Target
on page 251). Then, for each share or partition, select which targets to
replicate data to—one, both, or neither (see Enabling Replication For a
Share or Partition on page 126).
Below are two possible scenarios in which multiple replication targets
are configured.
All Shares or Partitions Replicate to Multiple Targets
For enhanced disaster recovery, all shares or partitions on the DXi4701
are configured to replicate to multiple targets. In this scenario, even if
one target system is lost, the other target system still retains a full copy
of all data on the source DXi4701.
Some Shares or Partitions Replicate to Multiple Targets
For increased flexibility, each share or partition on the DXi4701 is
configured to replicate only to the targets where needed. In this
scenario, shares or partitions fall into three categories:
• Some shares or partitions replicate to Target 1. (They may also
replicate to Target 2.)
• Some shares or partitions replicate to Target 2. (They may also
replicate to Target 1.)
• Some shares or partitions are not replicated.
Performing Data Replication
The Replication page allows you to set up replication for NAS shares or
VTL partitions and to replicate and recover data.