is there any way to increase disk performance ?

[Wojciech Puchar]

> I have freebsd7 (amd64 bit)  and sata2 disk 7200 rpm.
>
> it's running mail server which has services like pop3,imap,smtp and webmail 
> on this machine.
>
> When I type systat 1 -vmstat on command line, even I rarely see that disk 
> usage hits 100%.
> I have no problem as ram and cpu.  they is enough.
>
> is there any way to increase disk performance without causing any problem ?
i don't understand your problem.