To create a snapshot mirror on Windows

1. 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.

2. 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

1. Add dco (data change object) logs to the primary volume:

   /usr/sbin/vxassist -g disk_group addlog volume_name logtype=dco

2. Enable FastResync on the volume:

   /usr/sbin/vxvol -g disk_group set fmr=on volume_name
   

3. 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"'