In this video we will be showing you how to create a raid 5 on a Dell PowerEdge R940 server.
We will be using 4 Dell 600GB SAS drives
with a PERC H740P RAID controller.
The first step is inserting your hard drives in the server.
Once your drives are in, you can go ahead and boot up the server
We will be going in to the 'System Setup' menu by hitting the F2 key
Whether you are using SAS or SATA,
in order to create a raid, the drives need to be the same capacity and interface.
We are using new, unused drives but if you were using re-purposed drives make sure to backup
any data you have.
Once you create a raid, any data that may be on the drives will be permanently deleted.
Now that you are in the system setup menu, go down and select the 'Device Settings' menu
We will select our PERC H740P adapter.
Next, select 'Main Menu,' then select 'Physical Disk Management.'
On this screen, we will see if all our drives, all of the drive say 'Ready'
indicating that they have not been in a RAID previously and are ready to be configured.
Go back to the main menu and select 'Configuration Management'
Select 'Create Virtual Disk'
Under the drop down menu for 'Select Raid Level'
We will select RAID 5
Choose the option 'Select Physical Disks'
Under ‘Choose Unconfigured Physical Disks,’ select the first 3 drives
and leave the 4th one for the single hot spare.
Select 'Apply Changes' and you will be prompted that the
operation was completed successfully.
Select 'Ok' to continue.
Select 'Create Virtual Disk.'
Now, this is the point of no return, once you select confirm and hit 'Yes'
all data that was previously on the drives will be lost.
You will be prompted that the operation was completely successful and hit OK to continue
Now we will return to the main menu of the RAID controller
Select 'Physical Disk Management.'
Now you can see the first three drives are in the raid five configuration and
the fourth one can now be set as a hot spare.
Select the fourth drive.
Under the 'Operation' drop-down menu you can either 'Assign Global Hot Spare' or
'Assign Dedicated Hot Spare.'
In our case, we are going to select 'Dedicated Hot Spare' so it is specifically for the RAID 5
Select 'Go' and in this menu it will ask which raid we want to assign the hot spare.
Since we only have a RAID 5, we will select the first option then select 'Ok.'
Select 'Ok' to continue.
Now we can return to the 'Physical Disk Management' menu, the drive will still show 'Ready'
Don't be alarmed, we just need to exit and re-enter the
'Physical Disk Management' menu to see the change.
Select the drive to see more details.
That's it! You've setup a RAID 5 with the hot spare on your server.
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