filesystem and striping

Hello,

From few weeks i noticed slow performance of my server.

I did ADDM Report report and i find following suggestions:

The throughput of the I/O subsystem was significantly lower than expected.

Consider increasing the throughput of the I/O subsystem. Oracle's

      recommended solution is to stripe all data files using the SAME

      methodology. You might also need to increase the number of disks for

      better performance

   The performance of some data and temp files was significantly worse than

      others. If striping all files using the SAME methodology is not

      possible, consider striping these file over multiple disks.

i wolud ask to you, does striping is possible on filesystem or i must migrate to ASM?