The IBM 237399-001 is available from Calhoun Technologies. Calhoun Technologies can helped companies like yours save up to 80% on IT equipment. Our experienced and knowledgeable sales executives are ready to provide quick response to your needs for servers, storage and networking equipment. Brand: IBM Part Number: 237399-001 Details: 20Gb At D540X-4K Mx4K020H1 Sg-012340-12547 Rev A00 23