Dell Ax4-5 Manual

							Cabling Your Cluster Hardware21
Figure 2-4. Direct-Attached Cluster Configuration
Each cluster node attaches to the storage system using two multi-mode 
optical cables with LC connectors that attach to the HBA ports in the cluster 
nodes and the storage processor (SP) ports in the Dell/EMC storage system. 
These connectors consist of two individual Fibre optic connectors with 
indexed tabs that must be aligned properly into the HBA ports and SP ports.
 WARNING: Do not remove the connector covers until you are ready to insert the 
connectors into the HBA port, SP port, or tape library port. 
 
NOTE: The connections listed in this section are representative of one proven 
method of ensuring redundancy in the connections between the cluster nodes and 
the storage system. Other methods that achieve the same type of redundant 
connectivity may be acceptable.
Cabling a Two-Node Cluster to an AX4-5F Storage System
1Connect cluster node 1 to the storage system.
aInstall a cable from cluster node 1 HBA port 0 to SP-A Fibre port 0 
(first fibre port)
.
bInstall a cable from cluster node 1 HBA port 1 to SP-B Fibre port 0 
(first fibre port)
.
2Connect cluster node 2 to the storage system.
public network
storage system private network cluster node
cluster node
Fibre Channel 
ConnectionsFibre Channel 
Connections 
						

							22Cabling Your Cluster Hardware
aInstall a cable from cluster node 2 HBA port 0 to SP-A Fibre port 
1(second fibre port)
.
bInstall a cable from cluster node 2 HBA port 1 to SP-B Fibre port 
1(second fibre port)
.
Figure 2-5 and Figure 2-6 illustrate the method of cabling a two-node 
direct-attached cluster to an AX4-5F and AX4-5FX storage system 
respectively.
 NOTE: The cables are connected to the storage processor ports in sequential 
order for illustrative purposes. While the available ports in your storage system may 
vary, HBA port 0 and HBA port 1 must be connected to SP-A and SP-B, respectively.
Figure 2-5. Cabling a Two-Node Cluster to an AX4-5F Storage System
AB
A
B0Fibre 1Fibre0Fibre 1Fibre
cluster node 1
cluster node 2
SP-BSP-A1 1 0
0
AX4-5F storage system HBA ports (2)
HBA ports (2) 
						

							Cabling Your Cluster Hardware23
Figure 2-6. Cabling a Two-node Cluster to an AX4-5FX Storage System
Cabling a Four-Node Cluster to a Dell/EMC AX4-5FX Storage System
You can configure a 4-node cluster in a direct-attached configuration using a 
Dell/EMC AX4-5FX storage system:
1
Connect cluster node 1 to the storage system:
aInstall a cable from cluster node 1 HBA port 0 to the first front-end 
fibre channel port on SP-A.
bInstall a cable from cluster node 1 HBA port 1 to the first front-end 
fibre channel port on SP-B.
2Connect cluster node 2 to the storage system:
aInstall a cable from cluster node 2 HBA port 0 to the second front-end 
fibre channel port on SP-A. 
bInstall a cable from cluster node 2 HBA port 1 to the second front-end 
fibre channel port on SP-B.
3Connect cluster node 3 to the storage system:
aInstall a cable from cluster node 3 HBA port 0 to the third front-end 
fibre channel port on SP-A. 
bInstall a cable from cluster node 3 HBA port 1 to the third front-end 
fibre channel port on SP-B.
4Connect cluster node 4 to the storage system:
0
1 HBA ports (2)
SP-BSP-A
HBA ports (2)
1
0
AX4-5FX storage system 
						

							24Cabling Your Cluster Hardware
aInstall a cable from cluster node 4 HBA port 0 to the fourth front-end 
fibre channel port on SP-A. 
bInstall a cable from cluster node 4 HBA port 1 to the fourth front-end 
fibre channel port on SP-B.
Cabling 2 Two-Node Clusters to a Dell/EMC AX4-5FX Storage System
The following steps are an example of how to cable a 2 two-node cluster to a 
Dell/EMC AX4-5FX storage system:
1
In the first cluster, connect cluster node 1 to the storage system:
aInstall a cable from cluster node 1 HBA port 0 to the first front-end 
fibre channel port on SP-A. 
bInstall a cable from cluster node 1 HBA port 1 to the first front-end 
fibre channel port on SP-B.
2In the first cluster, connect cluster node 2 to the storage system:
aInstall a cable from cluster node 2 HBA port 0 to the second front-end 
fibre channel port on SP-A.
bInstall a cable from cluster node 2 HBA port 1 to the second front-end 
fibre channel port on SP-B.
3In the second cluster, connect cluster node 1 to the storage system:
aInstall a cable from cluster node 1 HBA port 0 to the third front-end 
fibre channel port on SP-A. 
bInstall a cable from cluster node 1 HBA port 1 to the third front-end 
fibre channel port on SP-B.
4In the second cluster, connect cluster node 2 to the storage system: 
aInstall a cable from cluster node 2 HBA port 0 to the fourth front-end 
fibre channel port on SP-A. 
bInstall a cable from cluster node 2 HBA port 1 to the fourth front-end 
fibre channel port on SP-B. 
						

							Cabling Your Cluster Hardware25
Cabling Storage for Your SAN-Attached Cluster
A SAN-attached cluster is a cluster configuration where all cluster nodes are 
attached to a single storage system or to multiple storage systems through a 
SAN using a redundant switch fabric.
SAN-attached cluster configurations provide more flexibility, expandability, 
and performance than direct-attached configurations. 
Figure 2-7 shows an example of a two-node, SAN-attached cluster.
Figure 2-8 shows an example of an eight-node, SAN-attached cluster.
Similar cabling concepts can be applied to clusters that contain a different 
number of nodes.
 NOTE: The connections listed in this section are representative of one proven 
method of ensuring redundancy in the connections between the cluster nodes and 
the storage system. Other methods that achieve the same type of redundant 
connectivity may be acceptable.
Figure 2-7. Two-Node SAN-Attached Cluster
cluster nodecluster node private network
Fibre Channel 
connections
storage systemFibre Channel 
switch Fibre Channel 
switchpublic network
Fibre Channel 
connections 
						

							26Cabling Your Cluster Hardware
Figure 2-8. Eight-Node SAN-Attached Cluster 
Each HBA port is cabled to a port on a Fibre Channel switch. One or more 
cables connect from the outgoing ports on a switch to a storage processor on a 
Dell/EMC storage system.
public network
storage systemcluster 
nodes (8)
Fibre 
Channel 
switchFibre 
Channel 
switch private 
network 
						

							Cabling Your Cluster Hardware27
Cabling a SAN-Attached Cluster to an AX4-5F Storage System
1Connect cluster node 1 to the SAN.
aConnect a cable from HBA port 0 to Fibre Channel switch 0 (sw0).
bConnect a cable from HBA port 1 to Fibre Channel switch 1 (sw1).
2Repeat step 1 for each cluster node.
3Connect the storage system to the SAN.
aConnect a cable from Fibre Channel switch 0 (sw0) to SP-A Fibre 
port 0(first fibre port
).
bConnect a cable from Fibre Channel switch 0 (sw0) to SP-B Fibre 
port 1(second fibre port
).
cConnect a cable from Fibre Channel switch 1 (sw1) to SP-A Fibre 
port 1(second fibre port
).
dConnect a cable from Fibre Channel switch 1 (sw1) to SP-B Fibre 
port 0(first fibre port
). 
						

							28Cabling Your Cluster Hardware
Figure 2-9. Cabling a SAN-Attached Cluster to an AX4-5F Storage System
Cabling a SAN-Attached Cluster to an AX4-5FX Storage System
1Connect cluster node 1 to the SAN.
aConnect a cable from HBA port 0 to Fibre Channel switch 0 (sw0). 
bConnect a cable from HBA port 1 to Fibre Channel switch 1 (sw1).
2Repeat step 1 for each cluster node.
3Connect the storage system to the SAN.
aConnect a cable from Fibre Channel switch 0 (sw0) to SP-A Fibre port 
0(First fibre port). 
bConnect a cable from Fibre Channel switch 0 (sw0) to SP-A Fibre port 
1(Second fibre port).
cConnect a cable from Fibre Channel switch 0 (sw0) to SP-B Fibre port 
2(Third fibre port).
AB
A
B0Fibre 1Fibre0Fibre 1Fibre
sw0sw1 cluster node 2
cluster node 1
AX4-5F storage system 01
01 HBA ports (2)
HBA ports (2)
SP-A
SP-B 
						

							Cabling Your Cluster Hardware29
dConnect a cable from Fibre Channel switch 0 (sw0) to SP-B Fibre port 
3(Fourth fibre port).
eConnect a cable from Fibre Channel switch 1 (sw1) to SP-A Fibre port 
2(Third fibre port).
fConnect a cable from Fibre Channel switch 1 (sw1) to SP-A Fibre port 
3(Fourth fibre port).
gConnect a cable from Fibre Channel switch 1 (sw1) to SP-B Fibre port 
0(first fibre port).
hConnect a cable from Fibre Channel switch 1 (sw1) to SP-B Fibre port 
1(Second fibre port).
Figure 2-10. Cabling a SAN-Attached Cluster to an AX4-5FX Storage System
sw0sw1 cluster node 2
cluster node 1
AX4-5FX storage system 01
01 HBA ports (2)
HBA ports (2)
SP-A
SP-B 
						

							30Cabling Your Cluster Hardware
Cabling Multiple SAN-Attached Clusters to a Dell/EMC Storage System
To cable multiple clusters to the storage system, connect the cluster nodes to 
the appropriate Fibre Channel switches and then connect the Fibre Channel 
switches to the appropriate storage processors on the processor enclosure.
See the Dell Cluster Configuration Support Matrices located on the Dell High 
Availability Clustering website at dell.com/ha for rules and guidelines for 
SAN-attached clusters.
 NOTE: The following procedure uses Figure 2-9 as an example for cabling 
additional clusters.
Cabling Multiple SAN-Attached Clusters to the AX4-5 Storage System
1In the first cluster, connect cluster node 1 to the SAN.
aConnect a cable from HBA port 0 to Fibre Channel switch 0 (sw0).
bConnect a cable from HBA port 1 to Fibre Channel switch 1 (sw1).
2In the first cluster, repeat step 1 for each node.
3For each additional cluster, repeat step 1 and step 2.
4Connect the storage system to the SAN.
aConnect a cable from Fibre Channel switch 0 (sw0) to SP-A Fibre 
port 0(first fibre port
).
bConnect a cable from Fibre Channel switch 0 (sw0) to SP-B Fibre 
port 1(second fibre port
).
cConnect a cable from Fibre Channel switch 1 (sw1) to SP-A Fibre 
port 1(second fibre port
).
dConnect a cable from Fibre Channel switch 1 (sw1) to SP-B Fibre 
port 0(first fibre port
).
Connecting a PowerEdge Cluster to Multiple Storage Systems
You can increase your cluster storage capacity by attaching multiple storage 
systems to your cluster using a redundant switch fabric. PowerEdge cluster 
systems can support configurations with multiple storage units attached to 
clustered servers. In this scenario, the MSCS software can fail over disk drives 
in any cluster-attached shared storage array between the cluster nodes. When 
attaching multiple storage systems with your cluster, the following rules apply:
 There is a maximum of four storage systems per cluster.