There are restrictions for sharing an HDS Lightning 99xxV
between a host and a SAN Volume Controller cluster.
Sharing ports
The HDS Lightning 99
xxV
can be shared between a host and a
SAN Volume Controller cluster
under the following conditions:
- The same host cannot be connected to both a SAN Volume Controller cluster
and an HDS Lightning at the same time because the Hitachi HiCommand
Dynamic Link Manager (HDLM) and the subsystem
device driver (SDD) cannot
coexist.
- A controller port cannot be shared between a host and a SAN Volume Controller cluster.
If a controller port is used by a SAN Volume Controller cluster,
it must not be present in a switch zone that allows a host to access
the port.
- Logical units (LUs) cannot be shared between a host and a SAN Volume Controller cluster.
Supported Topologies
You can connect the
SAN Volume Controller cluster
to the HDS Lightning under the following conditions:
- For SAN Volume Controller software
version 4.2.1 and later, you can connect a maximum of 16 HDS Lightning
ports to the SAN Volume Controller cluster
without any special zoning requirements.
- For SAN Volume Controller software
version 4.2.0, the following applies:
- Logical Unit Size Expansion (LUSE) and Virtual LVI/LUN operations
cannot be run on a disk that is managed by the SAN Volume Controller cluster.
LUNs that are created using LUSE and Virtual LVI/LUN can be mapped
to the cluster after they are created.
- Only disks with open emulation can be mapped to the SAN Volume Controller cluster.
- S/390® disks cannot be
used with the SAN Volume Controller cluster.
- Only fibre-channel connections can connect the SAN Volume Controller cluster
to the HDS Lightning.