NEC IS015-9E User Manual
Chapter 1 Data Replication Overview
1
Chapter 1 Data Replication Overview
To manage an enormous amount of information accumulated in business in a unified way and promote effective
and efficient utilization of the information, a high-throughput, large-capacity, and high-reliability storage system is
required. Data Replication provides functions to build and manage such a storage system.
This chapter describes overview of Data Replication, hardware configuration, and software configuration.
1
1
1
.
.
.
1
1
1
D
D
D
a
a
a
t
t
t
a
a
a
R
R
R
e
e
e
p
p
p
l
l
l
i
i
i
c
c
c
a
a
a
t
t
t
i
i
i
o
o
o
n
n
n
Data Replication is a function that creates Replication Volumes (RV) of a business volume (called
Master Volume (MV) in the data replication). It is installed in the disk array. Replication volumes
can be connected to or separated from the master volume at any time. Operations such as connection
and separation can be instructed from the business server and the iSM Client (e.g. Windows system).
The following two methods are provided to create replication volumes.
(1) Creating replication volumes within the same disk array (DDR: DynamicDataReplication)
(2) Creating replication volumes in different disk arrays (RDR: RemoteDataReplication)
Figure 1-1 Data Replication
Replication
(RV)
Master
(MV)
DynamicDataReplication
RemoteDataReplication
Production Task
(Online)
Master Server
Synchronize/Separate
Operation
Parallel Processing
(Backup/Search)
Master
(MV)
Replication
(RV)