Support for PUIS is affected much more by the storage controller and storage controller driver than by the operating system. Support in the system firmware (BIOS/UEFI) is also an important factor.
Provided that the aforementioned items all support PUIS, Windows 8.1 does not present any additional compatibility issues. Without support from these items, Windows 8.1 cannot make use of a PUIS enabled drive.
A common example where PUIS is used with Windows 8.1 (or even Windows 7 or older) is where an add-on storage controller (e.g. a RAID card) is used and leverages staggered spin up to ensure that all disks to not spin up simultaneously. In this scenario the
PUIS and staggered spin up array can even be used as a boot volume.
Brandon
Windows Outreach Team- IT Pro
Windows for IT Pros on TechNet