This IBM System Storage 600GB 15 Krpm 6 Gb SAS 3.5 inch HDD FRU 49Y1870 requires an available disk drive bay in an IBM DS3512 or EXP3512 expansion unit. IBM best practices for this 49Y1870 Hard Disk Drive require a minimum Model Type 1746 firmware revision of 07.70.16.01 & a minimum EXP3500 ESM firmware revision of 3.16. Contact our Technical Support team if you need assistance in ordering or integrating this HDD into your existing IBM System Storage environment.