Note the following limitations for using Flexible Storage Sharing (FSS):
FSS is only supported on clusters of up to 8 nodes.
Disk initialization operations should be performed only on nodes with local connectivity to the disk.
FSS does not support the use of boot disks, opaque disks, and non-VxVM disks for network sharing.
Hot-relocation is disabled on FSS disk groups.
The vxresize operation is not supported on volumes and file systems from the slave node.
FSS does not support non-SCSI3 disks connected to multiple hosts.
Dynamic Lun Expansion (DLE) is not supported.
FSS only supports instant data change object (DCO), created using the vxsnap operation or by specifying "logtype=dco dcoversion=20" attributes during volume creation.
By default creating a mirror between SSD and HDD is not supported through vxassist, as the underlying mediatypes are different. To workaround this issue, you can create a volume with one mediatype, for instance the HDD, which is the default mediatype, and then later add a mirror on the SSD.
For example:
# vxassist -g diskgroup make volume size init=none
# vxassist -g diskgroup mirror volume mediatype:ssd
# vxvol -g diskgroup init active volume