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Chapter 3 DXi3500 and DXi5500 Remote Management
Data Replication
Quantum DXi3500 and DXi5500 User’s Guide
106
• It is strongly recommended the replication is set up on a dedicated
subnet on Eth port 1 on the DXi3500/DXi5500 system.
Data Transmission
: Once a replication set has been de-duplicated, it may
be replicated (nonredundant data is transmitted from a source system to
a target). De-duplication tags representing files with a high probability of
being replicated (example: NAS share marked for replication) are queued
for replication after de-duplication is complete without regard to the
replication schedule. This continuous transmission of data is an
optimization allowing replication to be used with low bandwidth
networks.
Replication Set Transmission and Accounting
- When a replication set is
scheduled for transmission, the system scans the files comprising the
replication set and a
namespace
file is created. A
namespace
file contains
the complete set of de-duplication tags for the replication set. Data that is
active (a NAS file that is open) or data that is not yet de-duplicated is not
included in the
namespace
file. The namespace file is then de-duplicated
and transmitted to the target system after the data transmission of the
replication set is complete. Once both the replication set and namespace
file have been transmitted to the target system, the replication can be
recovered.
To configure your system for replication:
1
From the
Data Services
page, click the
Replication
tab.
The
Replication
page displays (see
figure 60
).
Note:
Data replication is a licensed feature for the DXi3500 and
DXi5500. Contact your Quantum Sales representative for
more information on purchasing this option.