Lenovo Hard Disk Drive_Bo ThinkServer 4TB 7200 3.5 Hard Disk Drive

2TB ThinkSystem 3.5" SAS 7.2K 12GB Hot Swap 512N Hard Disk Drive

Lenovo Part# 7XB7A00042

Hard Drives - Internal – Hard Drive - SAS - 12Gb/s SAS Drive Interface Standard - 7200 Spindle Speed (rpm) - Internal - 3.5" Form Factor - Server - 2 TB Storage Capacity - Lenovo ThinkSystem SR550 Server

4TB ThinkSystem 3.5" SAS 7.2K 12GB Hot Swap 512N Hard Disk Drive

Lenovo Part# 7XB7A00043

Hard Drives - Internal – Hard Drive - SAS - 12Gb/s SAS Drive Interface Standard - 7200 Spindle Speed (rpm) - Internal - 3.5" Form Factor - Server - 4 TB Storage Capacity - Lenovo ThinkSystem SR550 Server