GAD status Description
Data
redundancy
Updated
volume
Volume with
latest data*
• Both the P-VOL and S-VOL have
the latest data. If the pair is
forcibly deleted, I/O can be
restarted in either of the volumes.
• A failure occurs in the primary or
secondary storage system, and I/O
to the volume in the paired system
is also stopped.
If more than one failure occurs at the
same time, the GAD status changes to
Blocked.
* For details on how to determine which volume has the latest data, see Relationship between GAD
status, pair status, and I/O mode on page 1-13.
Related topics
•
Monitoring GAD status on page 1-10
GAD status transitions
The GAD status changes depending on the pair operation and failure. The
following illustration shows the GAD pair status transitions:
Overview of global-active device
1-11
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
To Next Page
Loading...
