I am seeking recommendations for shared storage options to support ESXi HA cluster (note I'm NOT asking for product/brand/model recommendation - I know this is against the rules here). I am asking for technology recommendation.

The company I work for is a small business. At the moment, we have one HP DL380 G9 with DAS, with ESXi 6.0, running our custom developed application. We are now looking at how to achieve HA/FT using the most economical option. We need HA/FT because I'm the one-man-IT-team and I am often away traveling so manual failover/restore is not an option.

I understand we need minimum of 2 ESXi host (physical server) and shared storage to achieve HA/FT. This is, I think, where it gets interesting: even the cheapest entry level storage array out there is probably an overkill for us. Our storage capacity requirement is probably around 200GB, and we don't see that doubling for at least 5 years. Yet, we need the shared storage for HA/FT.

Thus would really really appreciate any recommendation on my options. Thanks.