Hello yamezbond No, you won't be able to add drives smaller than 450GB to the current RAID 5 array. You can add any drive 450GB or larger to the array(within controller limitations; which on the PERC 6 is 2TB), but it will only use 450GB of the drive. What you could do with those 146GB HDDs is create a new array. Thanks
I currently have a Dell PowerEdge 2950 Server with 4 HD 450GB RAID5 configured and Win 2012 R2.  I have some spare 146GB HD's doing nothing and wonder if I can add 2 of them to the server and increase the size on my RAID5.  I have PERK 6i controller. Thanks!
Dell PowerEdge 2950 with diferent HD sizes?