IBM PowerVC now supports Hitachi (HDS) storage. The support is with PowerVC 1.3.1 FP2, which is now GA.
There are limitations with the support, which come from HDS' OpenStack cinder driver. Take a look at the PowerVC KC, which lists those and the implementation details -- https://www.ibm.com/support/knowledgecenter/SSXK2N_1.3.1/com.ibm.powervc.standard.help.doc/powervc_storage_hitachi.html.
One point that's not completely clear is that array registration is via the UI, similar to IBM and EMC arrays.
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