Which SAN components must be redundant to avoid single points of failure and to improve system reliability? (Multiple Choice)

Users of HuaweiStorageSystem A are requesting higher performance for their OLTP application. The OLTP application is the only system using HuaweiStorageSystem A.
A colleague suggests improving performance by running SmartQOS on the LUNS involved, while decreasing the performance of other services:
This is;

The OceanStor 9000 employs general-purpose x86 hardware to set up the scale-out NAS architecture. Relying on IB, 10GE, and PCIe networking, nodes deliver high concurrency and outstanding performance. Compared with the other two networks, the PCIe network has better scalability and is easier to manage.

SmartVirtualization allows us to; (Multiple Choice)

In the HyperMetro active-active data center solution, which of the following statements about the static priority mode used for brain-split prevention is false?