Solaris iostat

bash-3.00# iostat -Td -zxn 1 100
                    |  ||| |  +---> reps         
                    |  ||| +------> interval
                    |  ||+--------> pretty-print device names
                    |  |+---------> extended statistics 
                    |  +----------> omit zero-stat devices
                    +-------------> adds a time stamp at the top
         
Mon Jun 11 18:03:25 2012
                    extended device statistics
    r/s    w/s   kr/s   kw/s wait actv wsvc_t asvc_t  %w  %b device
    6.0   13.0  192.0  239.4  0.0  0.5    0.0   28.3   0  20 nfshost:/vol/vol26/user1
  166.0   94.0 5312.7 3008.4  0.8  6.3    3.2   24.2  48 100 nfshost:/vol/vol8/user2
   46.0    0.0 1407.8    0.0  0.0  1.0    0.0   22.0   0  39 rshare:/mnt/prod/RISK
   22.0    0.0   66.5    0.0  0.0  0.7    0.0   30.7   0  68 nfshost:/vol/vol10/user3