When PSA is coordinating the VMware NMP and any installed third-party MPPs, the MPPs perform which task?
A.
Implement logical device bandwidth sharing
B.
Handle I/O queueing to the logical devices
C.
Provide logical device and physical path I/O statistics
D.
Manage physical path claiming and unclaiming
http://my.safaribooksonline.com/book/software-engineering-and-development/enterprise/9780132842228/chapter-5dot-vsphere-pluggable-storage-architecture-psa/ch05lev1sec09
The correct answer is all of the above. The PSA is the overall architecture, it’s the name of the ‘Modular framework’. It consists of sub-modules which are the NMP and third party MPPs. These have sub-modules which are the SATPs and PSPs. It’s the PSPs (Path selection Policys) that ‘Manage Physical path claiming and unclaiming’.
Here’s a link:
http://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.storage.doc/GUID-C1C4A725-8BE4-4875-919E-693812961366.html