Fujitsu ETERNUS DX S5 Series - Automatic Switching Operation of the Storage Systems (Storage Cluster); Figure 16 Solution - Continuous Business (Storage Cluster)

Automatic Switching Operation of the Storage Systems (Storage Cluster)
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Solution Overview
Since data equivalence is maintained between two ETERNUS DX storage systems, even when one of the
ETERNUS DX storage systems fails, operation can continue by switching the I/O access destination to the other
ETERNUS DX either manually or automatically (automatic failover).
Figure 16
Solution — Continuous Business (Storage Cluster)
Normal operation
SAN
Standby
Active
FC FC
SAN
FC FC
Standby Active
When a failure occurs
CA CA
Storage Cluster
controller
Business server
Operation
data
Operation
data
Switch Switch
ETERNUS DX
(Primary storage)
Mirrored
data
Mirrored
data
ETERNUS DX
(Secondary storage)
Operations can continue
by switching to
the Secondary storage
The Storage Cluster controller
detects a failure
in the Primary storage
ETERNUS SF
Storage Cruiser
Business server
Operation
data
Operation
data
Switch Switch
ETERNUS DX
(Primary storage)
Mirrored
data
Mirrored
data
ETERNUS DX
(Secondary storage)
Failure
Monitor Monitor
Storage Cluster
controller
Monitor Monitor
CA CA CA CA CA CA
ETERNUS SF
Storage Cruiser
Failover
Replication
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Configuration Procedure
Connect business servers to the ETERNUS DX storage systems (Primary and Secondary storage systems) via
switches, and then connect the management server (ETERNUS SF Storage Cruiser) to the ETERNUS DX storage
systems via LANs.
To perform automatic failover, connect the Storage Cluster controller to ETERNUS DX storage systems (Primary
and Secondary storage systems) via the LAN in order to detect trouble in the ETERNUS DX storage systems.
To configure Storage Cluster, perform the settings with ETERNUS SF Storage Cruiser.
● Required Environment
Two ETERNUS DX storage systems are required.
To use Storage Cluster, the ETERNUS SF Storage Cruiser Storage Cluster option is necessary.
A Storage Cluster controller is required to perform automatic failover.
● Configuration Procedure
Use ETERNUS SF Storage Cruiser to perform the following settings.
• Registration of the ETERNUS DX
• License Registration
• Registration and configuration for servers and FC switches
11. Solution Configuration
Business Continuity
189 Configuration Guide (Basic)