Is it correct that any drives on HP server, even they are single alone drive, need to be control by HP's array?
I have fairly extensive knowledge of HP's Proliant's servers. This is the way it has always been as far back as I can remember. If you want a single stand-alone drive then you create a single drive "RAID 0" for the new disk. The OS will then see a new logical array drive for that exact capacity and you just partition and format it to your chosen file format.
The reason being that since the drives are always controlled completely by the RAID controller, you can benefit from it's advanced RAID migration features. A single drive RAID0 could be migrated to a 2-drive RAID1 mirror, or even have 2+ drives added into the array and converted to a RAID 5 or RAID 6 as desired. HP Array controllers are really great if you ask me.
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