IBM Books

Calculated settings

The overhead and transfer values in these fields are calculated from the values in the Average seek time, Rotation speed, and Transfer rate fields in the Recommended specifications which in turn are recommended based on the answers you specify in the Questions for recommended specifications.

However, you calculated the settings manually, you can modify the fields directly.

Overhead
This value is calculated using the following formula:

overhead = avg seek time + ( ( ( 1 / rotation speed ) * 60 * 1000 ) / 2 )

Transfer
This value is calculated using the following formula:

transfer = ( 1 / transfer rate ) * 1000 / 1024000 * 4096

[ Top of Page | Table of Contents | Glossary | Index ]

[ DB2 List of Books | Search the DB2 Books ]