If you've unintentionally typed "ziesi" instead of the intended word, here are a few possible suggestions: "size", "zebra" or "zeal". Double-checking your spelling or utilizing autocorrect can help avoid such misspellings in the future.
ESI The Electronic Discovery Reference Model (EDRM) framework includes the identification, preservation, collection, processing, review, analysis, and production of electronically stored information (ESI).