- Introduction
- Technology Options for Disaster Recovery Solutions
- Quick Checklist for Deployments
- Campus Cluster Maximum Distances
- Campus Cluster Topologies and Components
- Campus Cluster Configurations
- Performance in a Campus Cluster Environment
- Management Aspects of Campus Clusters
- Glossary
- Related Resources
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Campus Cluster Maximum Distances
A campus cluster based on Sun Cluster 3.0 software is a cluster where nodes are separated by distance in at least two sites. Conventional wiring (copper or multimode fiber) technology used in data centers does not span the distance needed for the cluster and storage interconnects. In many cases, use of third-party fiber networks and WDMs may be necessary to bridge the required distances of a geographically dispersed cluster.
TABLE 2 summarizes the maximum distances for storage and network interconnects based on the IEEE 802.3 standards and product specifications. By using special third-party hardware, such as transceivers and single-mode fibers, these distances can be further extended. Transceivers are used in SunPlex technology-based campus clusters to convert to and from fiber, both multimode and single mode. Maximum distances should be checked against product specifications for each specific deployment.
TABLE 2 Maximum Distances for Interconnects
|
Interconnect Type |
Maximum Distance |
|
Storage Interconnect |
|
| SWGBIC (1Gb) | 500m |
| SWGBIC (2Gb) | 150m/300m4 |
| LWGBIC (1Gb/2Gb) | 10000m5 |
|
Cluster Interconnect Gigabit Ethernet 1000BASE-X |
|
| SWGBIC (1000BASE-SX) | 220m/550m6 |
| LWGBIC (1000BASE-LX) | 5000m7 |
|
Cluster Interconnect Fast Ethernet BASE-X8 |
|
| 100BASE-TX (twisted pair) | 100m9 |
| 100BASE-FX (half duplex, multimode fiber) | 412m10 |
| 100BASE-FX (full duplex, multimode fiber) | 2000m11 |
| Storage Interconnect | 500m |