Documentation for Ubuntu Server 16.04 LTS

The principal source of documentation for Ubuntu is help.ubuntu.com. IBM® provides documentation that can be used as a complement to the documentation that is provided by the Ubuntu Documentation Project.
IBM publications with content specific to Ubuntu Server 16.04 LTS    Link
Device Drivers, Features, and Commands on Ubuntu Server 16.04 LTS PDF
Device Drivers, Features, and Commands on Ubuntu Server 16.04 LTSas a KVM Guest PDF

No distribution-specific versions of the publications in the following table are available. The functional descriptions in these editions might not precisely match all aspects of your distribution.

IBM publications that are the closest fit for Ubuntu Server 16.04 LTS Link
Using the Dump Tools PDF (kernel 4.4 edition)
How to use FC-attached SCSI devices with Linux® on System z® HTML | PDF (kernel 4.0 edition)
Networking with RoCE Express® HTML | PDF
libica Programmer's Reference libica version
Exploiting Enterprise PKCS #11 using openCryptoki EP11 version
Troubleshooting Guide PDF (May 2019 edition)
How to Improve Performance with PAV PDF (kernel 2.6.35 edition)
How to Set up a Terminal Server Environment HTML | PDF (kernel 4.0 edition)