"restarting" scsi

[Tony Laszlo <laszlo@example.com>]

Apologies in advance for posting 
another  elementary question. 

Is there a way of making Linux 
shutdown and restart the scsi 
services? Something like 
/etc/rc.d/init/network restart  or 
/etc/rc.d/init/pcmcia restart  or 

but for scsi services? There 
is no /init/scsi so I assume 
that either this sort of thing 
is not possible or it must be 
done in another way. 

Thanks. 

Tony Laszlo
Jiyugaoka, Tokyo