Formated capacity of HGST HMS5C4040BLE640

Hi!
I’m going to migrate my RAID from Western Digital WD40EFRX to HGST HMS5C4040BLE640. What is a formatted capacity of this device?
For WD40EFRX it is 4,000,787 MB. In HGST data sheet (https://www.hgst.com/sites/default/files/resources/MS4000.B_final_ds.pdf) I dont’t see actual information.

Best regards.

They mention it in the OEM spec… section 4.1 : https://www.hgst.com/sites/default/files/resources/MSDC4000.B_OEM_Spec_r1.0.pdf

Tnx for your time.