Technically .. not required. If do not want see the errors in the vRA Infa logs please follow the shutdown and start up sequence.
ShutDown :
1) Proxy Agents.
2) Dem Workers
3) Dem Orchestrator
4) IAAS Manager
5) IAAS Web
6) vRA VA
7) MS SQL Server ( Data Base)
Load Balancer
Start Up :
Reverse order of shutdown.