Cisco Cisco IPCC Web Option Installation Guide

Performance Considerations

During internal testing, hyper-threading has consistently doubled the time it took the database
migration to complete; therefore, to minimize migration time one should disable hyper-threading.

Ways to Reduce Data Migration Time

How to reduce data migration time:

•

Reduce database size.

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Purge the Logger DB of all data already replicated to the HDS (25 GB or less)

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Remove any unneeded records, especially RCD, RCV, TCD, and TCV tables via ICM
Purge Utility and/or SQL Query Analyzer.

Note: Removing records impacts the availability of historical reports. Knowledge of the
HDS schema is required.

•

Use better hardware, especially on I/O subsystems.

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RAID 1 + 0

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I/O Cache – more is better

•

For Technology Refresh upgrades, have the fastest network possible (gigabit through one
network switch) between the source and the destination machines. Use of a crossover cable
is not recommended because it lacks buffer memory and can cause data loss.

Upgrade Guide Cisco ICM/IPCC Enterprise & Hosted Editions Release 7.0(0)