MetroCluster configuration
About MetroCluster configurations
This section discusses how to configure your gateway in a MetroCluster configuration. The MetroCluster configuration expands on the switch-attached cluster configuration.
Also included in this section are rules for zoning switch ports, which is required for MetroCluster configurations.
Supported gateways
The following gateways support the MetroCluster configuration:
- GF825
- GF920
- GF940
- GF960
- GF980
Required adapters and hardware for connectivity
You need the following adapters for a MetroCluster:
- Fibre Channel HBAs
- Virtual Interface MetroCluster adapter (VI-MC)
- Inter Switch Link (ISL)
Connectivity overview
The following table describes the number of ports and cable connections needed for a MetroCluster configuration.
Number of gateways
|
Number of storage subsystems
|
Number of switches
|
Number of ISL connections
|
Number of cables
from gateway to switch
|
|---|
|
2
|
2
|
4
|
2
|
18
|
|
4
|
2
|
4
|
2
|
24
|
Connecting a gateway
Configuration A
The following diagram provides an example of how the low-end gFilers connect to your storage subsystem for maximum capacity.
Port-to-port connectivity
The following port-to-port scheme supports a maximum of 448 LUNs for the low-end gFilers and a maximum of 512 LUNs for the higher-end gFilers in a redundant configuration.
Port-to-port connectivity scheme
|
|---|
|
Gateway 1
|
Switch
|
Zone
|
|
FC HBA
|
1A
|
Any port on switch 1
|
Optional
|
|
2B
|
Any port on switch 2
|
|
VI-MC
|
A
|
Any port on switch 1
|
1
|
|
B
|
Any port on switch 2
|
2
|
|
Storage subsystem 1
|
Switch
|
Zone
|
|
CL1-A
|
Any port on switch 1
|
Optional
|
|
CL2-A
|
Any port on switch 2
|
|
Gateway 2
|
Switch
|
Zone
|
|
FC HBA
|
1A
|
Any port on switch 3
|
Optional
|
|
2B
|
Any port on switch 4
|
|
VI-MC
|
A
|
Any port on switch 3
|
1
|
|
B
|
Any port on switch 4
|
2
|
|
Storage subsystem 2
|
Switch
|
Zone
|
|
CL1-C
|
Any port on switch 3
|
Optional
|
|
CL2-D
|
Any port on switch 4
|
|
ISL connection
|
Zone
|
|
Any port on switch 1
|
Any port on switch 3
|
1
|
|
Any port on switch 2
|
Any port on switch 4
|
2
|
Configuration B
The following diagram provides an example of how the GF940/GF960/GF980 connects to your storage subsystem for a maximum of 672 LUNs.
Note
HBA connections must never share the same zone as VI-MC connections. Zoning individual HBA connections is not required.
The illustration below shows a MetroCluster configuration with two cluster nodes. Gateways 1 and 3 are partner nodes and gateways 2 and 4 are partner nodes.
Port-to-port connectivity
The following port-to-port scheme supports a maximum of 672 LUNs in a redundant configuration.
Port-to-port scheme
|
|---|
|
First MetroCluster pair
|
Fabric 1
|
|
Gateway 1
|
Switch
|
Zone
|
|
FC HBA
|
1A
|
Any port on switch 1
|
Optional
|
|
2B
|
Any port on switch 2
|
|
VI-MC
|
A
|
Any port on switch 1
|
1
|
|
B
|
Any port on switch 2
|
2
|
|
Gateway 2
|
Switch
|
Zone
|
|
FC HBA
|
1A
|
Any port on switch 1
|
Optional
|
|
2B
|
Any port on switch 2
|
|
VI-MC
|
A
|
Any port on switch 1
|
3
|
|
B
|
Any port on switch 2
|
4
|
|
Storage subsystem 1
|
Switch
|
Zone
|
|
CL1-A
|
Any port on switch 1
|
Optional
|
|
CL2-A
|
Any port on switch 2
|
|
CL1-B
|
Any port on switch 1
|
|
CL2-B
|
Any port on switch 2
|
|
Second MetroCluster pair
|
Fabric 2
|
|
Gateway 3
|
Switch
|
Zone
|
|
FC HBA
|
1A
|
Any port on switch 3
|
Optional
|
|
2B
|
Any port on switch 4
|
|
VI-MC
|
A
|
Any port on switch 3
|
1
|
|
B
|
Any port on switch 4
|
2
|
|
Gateway 4
|
Switch
|
Zone
|
|
FC HBA
|
1A
|
Any port on switch 1
|
Optional
|
|
2B
|
Any port on switch 2
|
|
VI-MC
|
A
|
Any port on switch 1
|
3
|
|
B
|
Any port on switch 2
|
4
|
|
Storage subsystem 2
|
Switch
|
Zone
|
|
CL1-C
|
Any port on switch 3
|
Optional
|
|
CL2-D
|
Any port on switch 4
|
|
CL1-D
|
Any port on switch 3
|
|
CL2-C
|
Any port on switch 4
|
|
ISL connection
|
Zone
|
|
Any port on switch 1
|
Any port on switch 3
|
1 or 3
|
|
Any port on switch 2
|
Any port on switch 4
|
2 or 4
|
Caution
You can attach a standard cluster to either the first or second pair of MetroClustered gateways, but not to both pairs.
Zoning rules for MetroCluster maximum configuration
You must zone the ports on your switch if the following conditions are true:
- You have more than one MetroCluster (two nodes in a MetroCluster) on the same fabric (that is, there is more than one interlink on the fabric) and your MetroCluster contains two gateway MetroCluster interconnects cabled to the same pair of switches.
- Your MetroCluster is sharing the switch with more than six nodes on the same fabric.
Copyright © 1994-2004, Network Appliance, Inc. All rights
reserved.
Part No. 210-00755
File: appndi20.htm
Last updated: Wed Dec 01 12:51:17 2004