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16 Chapter 2 Overview of CCI Operations
Commands
Commands
HORCM
(CCI)
HORCM
(CCI)
Host A
Host B
Server
software
Server
software
Operation
Management
Operation
Management
Primary/
secondary
volume
Secondary/
primary
volume
Hitachi RAID
Pair
generation
and
resync
Pair
splitting
Command device Command device
Hitachi RAID
Figure 2.6 Hitachi TrueCopy Remote System Configuration
2.2.5 Hitachi TrueCopy Local Commands
Figure 2.7 illustrates a Hitachi TrueCopy local configuration. The TrueCopy local commands
support a function which links the system operation for the purpose of volume backup among
UNIX servers with the operation management of the server system. The TrueCopy local
commands perform the same functions as the remote commands only within the same
storage system instead of between two storage systems.
Commands
Commands
HORCM
(CCI)
HORCM
(CCI)
Host A
Host B
Server
software
Server
software
Operation
Management
Operation
Management
Primary/
secondary
volume
Secondary/
primary
volume
Hitachi RAID Storage
Pair generation and re-synchronization
Pair splitting
Command
device
Figure 2.7 Hitachi TrueCopy Local System Configuration