WD Red Pro 8TB 3.5-Inch SATA III 7200rpm 128MB Cache NAS Internal Hard Drive (WD8001FFWX) Available in large capacities with support for 1-16 bays 5 year limited warranty Enhanced reliability with 3D Active Balance Plus and error recovery controls with NASware 3.0 Extended drive testing to ensure each drive is tested for extended reliable operation Vibration & Shock protection Package includes a hard drive only - no screws, cables, manuals included. Please purchase mounting hardware and cables separately if necessary. Ships in WD-certified box for safe transit during shipping