Lun Manager; Virtual Partition Manager; Volume Shredder; Performance Monitor - Hitachi G1000 User Manual

GAD statuses
Read Only or
Protect
* If the attribute is Read Only, Read is allowed but not Write. If the attribute is Protect, Read and Write
are not allowed.
Related topics
• Data Retention Utility on page 2-17

LUN Manager

Use the volumes for which LU paths have been set to create a GAD pair. You
can add LU paths to or delete LU paths from GAD pair volumes. However, you
cannot delete the last LU path because at least one LU path must be set for
GAD pair volumes.
A volume for which no LU path has been set cannot be used as a GAD pair
volume.

Virtual Partition Manager

GAD pair volumes and quorum disks can migrate CLPRs.

Volume Shredder

GAD pair volumes and quorum disks cannot use Volume Shredder to delete
data.

Performance Monitor

Performance Monitor can be used to collect performance information about
GAD pair volumes and the quorum disk.
However, the amount of a port's I/O that can be added to Performance
Monitor depends on the type of the volume to which I/O is issued, or on the
volume's I/O mode.
For example, if the I/O mode of both GAD volumes is Mirror (RL), when the
server writes to the P-VOL one time, all of the following ports and volumes
that the command goes through record the performance information:
• Primary system's Target port
• P-VOL
• Primary system's Initiator port
• Secondary system's RCU Target port
• S-VOL
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
Access attribute
P-VOL S-VOL
Read Only or
Protect
System requirements
I/O
P-VOL
Rejected Rejected
S-VOL
2-19