Table of Contents
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data consistency across pairs in the consistency group. The pair that is
using different data pool can be belongs to the same consistency group.
Differential Management LUs (DMLU)
The DMLU is an exclusive volume used for storing TrueCopy information
when the local or remote array is powered down. The DMLU is hidden from
a host. User setup is required on the local and remote arrays.
TCE interfaces
TCE can be setup, used and monitored using of the following interfaces:
•
The GUI (Hitachi Storage Navigator Modular 2 Graphical User
Interface), which is a browser-based interface from which TCE can be
setup, operated, and monitored. The GUI provides the simplest method
for performing operations, requiring no previous experience. Scripting
is not available.
•
CLI (Hitachi Storage Navigator Modular 2 Command Line Interface),
from which TCE can be setup and all basic pair operations can be
performed—create, split, resynchronize, restore, swap, and delete. The
GUI also provides these functionalities. CLI also has scripting capability.
•
CCI (Hitachi Command Control Interface (CCI), which is used to display
volume information and perform all copying and pair-managing
operations. CCI provides a full scripting capability which can be used to
automate replication operations. CCI requires more experience than
the GUI or CLI. CCI is required for performing failover and fall back
operations, and, on Windows 2000 Server, mount/unmount operations.
HDS recommends using the GUI to begin operations for new users with no
experience with CLI or CCI. Users who are new to replication software but
have CLI experience in managing arrays may want to continue using CLI,
though the GUI is an option. The same recommendation applies to CCI
users.
Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide
Overview
1–7
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Table of Contents
Troubleshooting
