The FSS attribute needs to be set on a disk group before any exported disks can be added to the disk group. This prevents the accidental addition of exported disks to disk groups. In addition, the tunable parameter storage_connectivity must be set to asymmetric. The FSS attribute can only be set on shared disk groups.

The vxdg command lets you create a disk group with the FSS attribute turned on or set the FSS attribute on an existing disk group.

The following command sets the FSS attribute on a disk group during initialization:

# vxdg -s -o fss init diskgroup [medianame=] accessname

where diskgroup is the disk group name, medianame is the administrative name chosen for a VM disk, and accessname is the device name or disk access name.

The following command sets the FSS attribute on a disk group:

# vxdg -g diskgroup set fss=on

The following command sets the FSS attribute on a disk group during a disk group import:

# vxdg -s -o fss=on import diskgroup

After setting the FSS attribute on a disk group, you can use the vxdg list command on a specified disk group to list all hosts in the cluster contributing their local disks to the disk group, and storage enclosures from which disks have been added to the disk group. Once you have created a disk group with the FSS attribute turned on or set the FSS attribute on an existing disk group, the ioship policy is set to on and the disk detach policy is set to local detach policy.

See Displaying exported disks and network shared disk groups.