SAP Disk Defragment Tool

Question

Hi Everyone! Is there a built in tool that SAP has that can do disk defragment? I've searched all over the place but unable to find anything that SAP has built in or what SAP recommends. At the moment the built in Microsoft tool is not working at a level which we would like. Any advice would be appreciated! thank you!

Answer 1

Connie let me explain you this:
Data fragmentation in Hard Disks is produced when data in sectors are writen and after some time are deleted, then the hard disk itself whenever you try to write information in the disk it will try to fill the empty spaces it finds starting from  first sectors and so on. Usually happens that a file uses more than 1 sector so if you have 3 free sectors between used sectors and you try to write a file that uses 4 sectors the electronics in the disk will fill those 3 free sectors and then the 4th sector will be writen somewhere else, this is call as disk fragmentation because the same file information is not next to each other. This is done by the disk or controller, not by SAP or Oracle.
Now we can tell that SAP has nothing to do with disk fragmentation because writing and deleting is done by hardware (with few exceptions) so you can use ANY software that you want to use for disk fragmentation. Be aware that disk fragmentations is important after thousands of hours. What is the percentage of fragmentation that you are so worry?
If you are in Windows then use the tools that comes with Windows as it is whell known that this are the best tools for defragmentation for NTFS or NTFS2.
The tool basically will move files in a way that they will be contiguous (in sectors) and it is supposed to improve performance but this is almost imperceptible so I wouldn´t worry much about this. If you want to improve performance then write here what is the problem you have and for sure you will get lots of info and answers.