Replacing a drive with higher size from same family should not create issues. We need to ensure drive is supported on that server. We sometime seen issues when non Dell certified drives are used. Can you share the server model you have?
Hi!Tried to find the answer, but couldn't clearly find out. My hard drives are two 500GB SATA-drives spinning on a H200 controller but they are like 7 years old. Hence I would like to replace them before they die.The problem is that there are no "high quality" 500GB drives being sold anymore, so 1TB is minimum I can get. Is there a problem to exchange the 500GB with 1TB drives and settle with only getting 500GB available storage? I can live with that until its time for this machine to hit the junkyard 
Exchange hard drive H200 RAID Controller