Blizzard made some waves when the official system requirements of Shadowlands was revealed to require an SSD. It turns out that listing was in error, according to a new post on the official Warcraft forums.
We previously reported that the minimum requirements would require an SSD, something that might signal an overall shift in the industry from mechanical harddrives to solid state storage. However, it seems that listing was in error, and Blizzard has updated the requirements to reflect the actual minimum hardware you'll need.
The text of the Systems Specifications for Shadowlands was updated a few minutes ago on our Support Site: https://us.battle.net/support/en/article/256565 139
The minimum requirements section for Storage now reads:Solid State Drive (SSD)100GB available spaceOrHard Disk Drive (HDD)100GB available space (depending on the performance of the drive, player experience may be impacted on HDD)
It's interesting to note that the team at Blizzard makes mention that while an HDD will work, there could be issues with performance based on the quality of the HDD. Which makes sense as files are just getting larger and larger and mechanical harddrive speeds aren't exactly improving as more and more companies invest in solid state storage.