Which of the following operations can be done by the IDV architecture cloud server? (Multiple choice)

After major operations are performed on FusionAccess, the system may be abnormal. At this time, it needs to be rolled back and restored.
turn off
Yu retreats and resumes
Is the law correct?
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FusionAccess is a virtual control system of Huawei Cloud Computing, which is mainly used for the creation and distribution of virtual desktops.

In Huawei Desktop Cloud, when creating a desktop template, the virtual machine needs to be restarted after the packaging is completed bbs.hh010.com

Which of the following options belong to the services included in the role of sys-server in Huawei FusionSphere OpenStack?