How to rebuild a degraded RAID 10 array on an Lenovo RD330?

One of the drives on my Lenovo RD330 is amber and in BIOS it states that 1 virtual drive is degraded.  Under virtual drive it says RAID 10.  There are 4 1 TB 7200 RPM SATA drives total.

My question is, how do I replace the fail(ing) hard drive and get it to change its state to healthy again from degraded?

Is the process automatic, IE, gracefully power down the server, pop out the amber drive and then replace it with a newly ordered drive of same capacity?  IE will the RAID controller detect the drive and start to repair the virtual drive automatically?  

OR, do I need to intervene in someway.  IE go into the controller BIOS and configure it to see this new drive etc?

Thanks for the information.
Who is Participating?
Olgierd UngehojerConnect With a Mentor Senior Network AdministratorCommented:
First you have to check if your hdds are hot swap or not. If yes you can replace hdd when system is running. If not you have to power off server and replace hdd. Then boot up system and use raid controller software to rebuild raid. With some controllers this process can be automatic.  If you have space you can add new hdd and in the software demote broken hdd and mount new one and rebuild.
Here is a link when you can find more informations
andyalderConnect With a Mentor Commented:
MegaRAID Storage Manager should be installed on the server so you can check the status with that.
CnicNVAuthor Commented:
Thanks for the feedback everyone.

Turns out with this particular server the RAID rebuild process was fully automatic.  

I powered down the server, removed the bunk hard drive and then put in the new hard drive, which was a WD red series SATA drive of same capacity.  Note that the original drives were Lenovo branded WD drives.  When I powered up the machine, the light was green, then amber momentarily and status was still degraded.  But after an uncomfortably long while the drive started blinking green and it continued into loading ESXI normally.  This morning the drive LED is solid green and no longer flashing.  So it appears as though it has finished rebuilding the array.

Also final note, I am not able to install MegaRAID as this is ESXI, and I don't think this is exposed all the way up to the Windows Server VMs.
You shouldn't have powered off to change the disk, do it hot as they are hotswap disks.

As a hopefully not final note: MegaCLI is available for ESXi, without it you're gambling on noticing red lights on the hosts. In that respect ESXi is just a cut-down version of Linux and runs the monitoring software provided by the hardware manufacturer just the same as Redhat would.
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