If we talk about the hardware you have mentioned in the worksheet, both MSA 2052 Storage and Aruba 3810M Switch support SPF+ devices ( let’s park the question on server and switch uplink aside for a while)
It must be understood that every SFP+ device has a set of SFPs that it supports (Transceivers and DACs), and every switch model that supports SFP+ device has a choice of uplinks.
Choice of uplinks: − SFP+ uplink models: provide fiber-optic (up to 70 km) or direct-attach-cable (DAC) connectivity.
Both options are available to build an Ethernet connection as Aruba 3810M switch model offers that functionality.
Please refer page 4- https://h20195.www2.hpe.com/v2/GetPDF.aspx/c04843019.pdf
Now, talking about the ProLiant DL360 Gen10 Server, the worksheet includes HPE FlexFabric 10Gb 2 port SPF+ adapter.
Thus, we have another end of the device establishing Ethernet Connection i.e.; SPF+ device.
Caveats:
The choice of uplinks depends on the type of Ethernet connection you want to build (Transceivers/DACs).
Supported cables must be connected to establish a device-to-device Ethernet connection.