Sharing the HDS Lightning 99xxV between a host and the IBM Spectrum Virtualize
There are restrictions for sharing an HDS Lightning 99xxV between a host and the IBM Spectrum Virtualize™ clustered system.
Sharing ports
The HDS Lightning 99xxV can be shared between a host and the IBM Spectrum Virtualize system under the following conditions:
- The same host cannot be connected to both the IBM Spectrum Virtualize system 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 the IBM Spectrum Virtualize system. If a controller port is used by the IBM Spectrum Virtualize system, 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 the IBM Spectrum Virtualize system.
Supported Topologies
You can connect the IBM Spectrum Virtualize system
to the HDS Lightning under the following conditions:
- For IBM Spectrum Virtualize software version 4.2.1 and later, you can connect a maximum of 16 HDS Lightning ports to the IBM Spectrum Virtualize system without any special zoning requirements.
- For IBM Spectrum Virtualize software
version 4.2.0, the following conditions apply:
- Logical Unit Size Expansion (LUSE) and Virtual LVI/LUN operations cannot be run on a disk that is managed by the IBM Spectrum Virtualize system. LUNs that are created by using LUSE and Virtual LVI/LUN can be mapped to the system after they are created.
- Only disks with open emulation can be mapped to the IBM Spectrum Virtualize system.
- IBM® disks cannot be used with the IBM Spectrum Virtualize system.
- Only Fibre Channel connections can connect the IBM Spectrum Virtualize system to the HDS Lightning.