However, it is probably a good idea to run this game in an SSD anyhow (here is our list of Best SSDs). When you look at games like Call of Duty Modern Warfare which don't need an SSD but have very large storage requirements, the Wow gold classic game is playable but you will encounter painfully long loading times. You can also possibly experience"hitching" where the HDD is not fast enough to stream resources in real time.
Purchasing an SSD should not be a big problem for most users -- almost all new PCs and notebooks come with solid state storage. Plus, with cheap classic gold the purchase price of SSDs falling exponentially over the past few years, grabbing a shiny new SSD just for Shadowlands will not break the bank for most budget gamers.