Hi Amod. I want to clarify again that fast restart is an Enterprise Edition only feature.
Fast restart does work for data-in-index because record data is stored in the primary index rather than heap. This way the primary index can be placed in shared memory and reattached when the asd daemon restarts. If you did actually have data in memory (more than that single integer) the server would have to load it back from your persistence into DRAM. That is a cold start.