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Dell Poweredge 2900 adding Hard drive

I need to add a 500GB SAS drive into my exisiting server. I have 3 drives in there with raid 5 which are fine. I want to just add this as a seperate drive not in the raid for additional storage. Whats the best way to configure this?
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Ok so do i need to reboot as they are hot pluggable?
Since the PERC controller does not support non-RAID, you must configure it as part of a RAID array.  With a single disk, your only option is RAID 0.

You can do this in the CTRL-R utility during POST, or you can do it from the OS using OpenManage Server Administrator (OMSA) if running a supported OS.
Will windows just detect the new hardware? I only need some space to dump files onto
Ok i setup a seperate raid as i dont want to add it into the existing array with the other three drives. I want it to sit on its own with no raid?
No.  Hot pluggable literally means OK to plug it in while the system is running.  In fact, when/if you lose a HDD from the RAID5, you just yank out the bad one and put in the new one in the same slot.  

Then the system will automatically repair. That is how it is designed to work.  Not only that, this is how the firmware EXPECTS you to do things.  If you put the disk in after a shut down, then it won't rebuild.
Disk administrator, scan for new drives will do it.
Yes, set up a separate 1-disk RAID0.
"I want it to sit on its own with no raid?"

You don't have to make it part of an existing RAID if you don't want to, but it must belong to A RAID array.  In this case, it will be in a RAID array of its own - a single-disk RAID 0.
Ok thanks will have a go