Performance Issue

Today One of our Server is facing Performance Issues
after Tuning the Database we came To know that the server disk have issue regarding slow Disks as disk I/O was very very high as compared to other servers

We also compared the performance by simply copying 10 GB file from one disk to other disk on the same server S1. Then copied the same file on another server's S2one disk to other disk.

There was a big Difference in copying times for S1 and S2, Hence proved that the server disks are slow

Oracle 11g ASM

ASM in Oracle 11g 

According to wikipedia 

"ASM aims to simplify the management of database datafiles, control files and log files. To do so, it provides tools to manage file systems and volumes directly inside the database, allowing database administrators (DBAs) to control volumes and disks with familiar SQL statements in standard Oracle environments."