Abstract
The input/output performance of a hard disk drive (HDD) decreases when the HDD operates in rotational vibration (RV) environments found in servers. Understanding the vibration characteristics of components in the server and the amount of excitation forces is therefore needed to maintain a high performance level. We developed a prediction method that calculates the rotational vibration of HDDs caused by operational vibration of cooling fans in a rack mount server. The proposed method consists of a finite element model of the server and a fan excitation force model. The calculated overall values of the HDD RV agree with measured results.
