Hello StingerAlex,   To apply the firmware: Execute the file at the desktop, follow prompts, reboot when requested.   You can use 4TB drives and configure them as RAID1. We have several 4TB drives validated for the T110II.   I will note that the T110II is only validated to WS2012R2. WS2019 is not validated.   Your PowerEdge T110 II supports these operating systems: [URL]  
Hello! I am sorry for disturbing, I have read all posts and documentation about H200 and it is still very confusing about the individual sizes of SATA drives. All notes are about the sizes of the logical virtual RAID drives, but not too much about the physical HDD itself. One topic is saying 2TB, another is telling me 4TB. I need to add two drives to H200A, firmware version 7.03.05.00 A08. Can I buy two 4TB drives and put them in RAID1? Thank you!
PE 110 II PERC H200A drive maximum size