There are restrictions for sharing EMC Symmetrix and Symmetrix
DMX systems between a host and a SAN Volume Controller cluster.
An EMC Symmetrix or Symmetrix DMX system can be shared
between a host and a
SAN Volume Controller under
the following conditions:
- When possible, avoid sharing target ports between the SAN Volume Controller cluster
and other hosts. If this cannot be avoided, you must regularly check
the combined I/O workload that is generated by the SAN Volume Controller cluster
and the other hosts. The performance of either the SAN Volume Controller cluster
or the hosts is impacted if the workload exceeds the target port capabilities.
- A single host must not be connected to a SAN Volume Controller and
an EMC Symmetrix or Symmetrix DMX because the multipathing drivers
(for example, subsystem device driver (SDD) and PowerPath) cannot
coexist.
- If the EMC Symmetrix or Symmetrix DMX is configured
in such a way that other hosts cannot access the LUs
that are managed by the SAN Volume Controller cluster,
other hosts can be directly connected to an EMC Symmetrix or Symmetrix
DMX system at the same time as a SAN Volume Controller cluster.