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As you have seen in Table 1-2, there are many different options available to make your WebSphere system highly available. Figure 1-3 is a graphical representation of these possible options for the client tier, the DMZ, and the application tier (hardware failures or disasters as mentioned in the table are not covered in the figures of this section).
Figure 1-3 HA technologies Client Tier - DMZ - Application Tier
WebSphere MQ can be located in either the application tier or the EIS tier or in both.
Figure 1-4 provides the same information for the EIS tier. The graphic shows an overlap with the application tier for easier comprehension.
Figure 1-4 HA technologies Application Tier - EIS Tier
