Hello Numan_Hasan,   Both of the drives you have are validated for the R540 and can be used together.   Pn#0KV02 - HD,1.2T,102N,IS12,2.5,H-CF,EC 1.2TB, HDD, 10K RPM, 2.5 inch, Non Encrypted, SAS12, 512b, 128MB, Cobra F, Enterprise Class   Pn#G2G54 - HD,1.2T,102N,IS12,2.5,S-SKB,EC 1.2TB, HDD, 10K RPM, 2.5 inch, Non Encrypted, SAS12, 512b, Skybolt, Enterprise Class   Other available drives can be found at this link. If you contact Sales they may have others also. PowerEdge R540 Compatible Parts & Upgrades [URL]  
Hi.. I want to expand my HDD storage in PowerEdge R540 . But I have unused HDD G2G54 from the other dead server. Can I utilize it?  Expand Server  Dead Server   Thanks You
Did G2G54 HDD Compatible with PowerEdge R540?