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How to Wire a Dell C6220 3 Node Server to Make a 4 Node Server and Vice Versa
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onThere are has been a lot of confusion about how to correctly wire a Dell C6220 3 Node Server to make a 4 Node Server and vice versa.
This is an explanation of what we see most of the time with the 3 and 4 Node units we get.
With the Dell C6220 rack servers, whether it's a 3 or 4 nodes, each node supports 4 drives with a single mini-SAS to 4/3 SATA cable.
The daughter board on the right of the nodes (when looking at the system from the front) has two rows of mini-SAS ports. Only the "HDD 1-4" for each node seems to work with each node.
They are organized just like the nodes:
- The top left two mini-SAS ports are the top left node.
- The top two right mini-SAS ports are the top right node.
- The bottom left two mini-SAS ports are the bottom left node.
- The bottom right two mini-SAS ports are the bottom right node.
The C6220s only have 12 HDDs total.
The 3 Node uses three mini-SAS to 4 SATA.
Each node is connected to each row. The third row back-plane doesn't get a SPDIF connector.
- The top left is the top left node, which is connected to the top row of HDDs.
- The bottom left is the bottom left node, which is connected to the middle row of HDDs.
- The bottom right is the bottom right node, which is connected to the bottom row of HDDs.
The 4 Node uses four mini-SAS to 3 SATA.
Each node is connected to each column.
- The top left is the top left node, connected to the left column of HDDs.
- The bottom left is the bottom left node, which is connected to the second column of HDDs.
- The top right is the top right node, which is connected to the third column of HDDs.
- The bottom right is the bottom right node, which is connected to the far right column of HDDs.