Yes, you can use the five HDDs on NR710C as five individual disk volumes/hard disk drives on operating system. When your NR710C that is populated by five HDDs is not with any RAID mode, you only need to format each of the five HDDs from Computer Management, and then you can begin to use the five hard disk drives as five individual disk volumes on operating system. When your NR710C populated by five HDDs is with a RAID mode, you should delete all the RAID volumes on NR710C first, and then format each of the five HDDs from Computer Management. After formatting, you can start to use the five hard disk drives as five individual disk volumes.