Do I have to use the same hdd in RAID 5?
I have the TX300 S3 server with LSI MegaRAID SAS PCI Express(TM) ROMB (0) working with 5 hdd (ST3146854SS) in RAID 5. Two of the hard drivers are predicted to fail so I have to replace them ASAP. My question is . Do I have to use the same hdd as the manual says "(Replace the hard disk that is predicted to fail with a new one of the same model (with the same capacity and speed) as a rule."? I thought that you could use different hdds and the system will take the capacity/speed of the lowers. is that correct?. Need help please because if both of the hdd fail at the same time I will be in trouble. Thanks you very much in advance.