Administrator’s Guide

About the Web Server Connector 11
Configuration 4: RAIC with multiple copies of the
same databases
In this configuration, identical copies of the same database(s) are
hosted from multiple copies of FileMaker Pro 5 Unlimited. The Web
Server Connector channels the request to the next available database
in the RAIC, according to the internal list kept by the Web Server
Connector.
This is an excellent configuration for serving data such as a catalog.
The redundancy of sharing multiple copies of the same database
produces excellent throughput, speed, and fail-over protection: if a
host crashes or is brought off line, the Web Server Connector moves
to the next host on its internal list.
However, this redundancy makes it difficult to input and modify
data. Because the Web Server Connector releases a database after a
request has been processed, that database becomes available
immediately as a node of the RAIC. This means that it is possible to
encounter a different node of the RAIC with each request or
transaction. When the contents of a record are duplicated in other
databases, it is difficult to reconcile changes.
Important Using read-only databases in this type of RAIC is strongly
recommended.
Configuration 5: RAIC with multiple, different databases
Web
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Web Server
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Web
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Web
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Web
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Connector
FileMaker Pro 5
Unlimited CPU
FileMaker Pro 5
Unlimited CPU
FileMaker Pro 5
Unlimited CPU
Catalog.fp5 Catalog.fp5 Catalog.fp5
Web
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Web Server
Web
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Web
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Web
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Web
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Connector
FileMaker Pro 5
Unlimited CPU
FileMaker Pro 5
Unlimited CPU
FileMaker Pro 5
Unlimited CPU
Sales.fp5 Catalog.fp5 Invoice.fp5
Orders.fp5 Clients.fp5