Creating a snapshot mirror
You can create a snapshot mirror using VxVM commands.
To create a snapshot mirror on Windows
- For a volume that is associated with a drive letter, enter:
vxassist snapstart X:
where X is the drive letter. This command creates a snapshot mirror of the designated drive.
- For a volume that is not associated with a drive letter, enter:
vxdg -g disk_group dginfo
This command shows information for the specified disk group, including the names of the volumes that are configured for that group.
Create the snapshot by entering the following:
vxassist snapstart \Device\HarddiskDmVolumes\disk_group\Volume_name
This command creates a snapshot mirror of the designated Windows volume.
To create a snapshot mirror on UNIX
- Add dco (data change object) logs to the primary volume:
/usr/sbin/vxassist -g disk_group addlog volume_name logtype=dco
- Enable FastResync on the volume:
/usr/sbin/vxvol -g disk_group set fmr=on volume_name
Prepare a new mirror for the Instant Recovery snapshot:
Create the mirror:
/usr/sbin/vxassist -g disk_group snapstart primary_volume
Wait until the mirror is synchronized (status SNAPDONE, or State field reads Ready in the volume's properties display).
To verify that the mirror is synchronized, enter:
/usr/sbin/vxprint -g disk_group -q -t -e 'assoc="primary_volume"'
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