Hi Petri,
Thanks for your comment. I tried accessing the links that you've posted but they throw a 404 error.
I am not suggesting that customers should eliminate their existing technology investment in SAN. A move from SAN to DAS would be worth considering as hardware goes to end-of-life. Most customers in the enterprise space replace hardware on a 3-5 year refresh cycle (some maintain longer term maintenance contracts, but they are not the majority from my experience). If you are currently on SAN and are looking at an upcoming hardware refresh, then it is appropriate to evaluate the options that are available to ensure that the choice you make offers the best solution for your particular environment. As I say in the white paper " This solution is effective for either SAN or direct attached storage solutions. We recommend evaluating direct attached storage as a storage option due to its reduced complexity and inexpensive nature."
This solution is very capable of supporting the workloads you mention on either DAS or SAN. The cost and reduced complexity benefits with DAS are significant and are worth evaluating. This is all about evaluating options and making educated choices about what is the best fit for your organization. In the end, you may decide that SAN meets your specific needs better. There’s nothing wrong with that.
Tom.