Dr. Anya Sharma, the lead archivist at the Global Scientific Data Repository (GSDR), faces a significant challenge. GSDR ingests a vast array of scientific datasets from international research collaborations. These datasets encompass diverse fields such as climate modeling, genomic sequencing, and particle physics simulations. A persistent issue is the lack of standardization in data formats across these collaborations. Furthermore, these formats often undergo rapid evolution as new software and analytical techniques emerge. A recent audit revealed that a significant portion of older datasets, particularly those predating 2010, are stored in formats that are either obsolete or poorly documented, hindering their accessibility and usability for current researchers. Considering the principles and functional entities of the OAIS model, what comprehensive strategy should Dr. Sharma implement to ensure the long-term preservation and accessibility of these diverse and evolving data formats within the GSDR\'s archival storage?