[root@centostest ~]# iostat -cdhm  sdb sdc sdd sde sdf sdg sdh sdi 10
Linux 3.10.0-1160.76.1.el7.x86_64 (centostest.local)    08/26/2022      _x86_64_        (8 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.13    0.00   25.24   67.69    0.00    6.94

Device:            tps    MB_read/s    MB_wrtn/s    MB_read    MB_wrtn
sdb
               1079.50       539.75         0.00       5397          0
sdc
               1080.20       540.10         0.00       5401          0
sdd
               1079.40       539.70         0.00       5397          0
sde
               1079.50       539.75         0.00       5397          0
sdf
               1079.40       539.70         0.00       5397          0
sdh
               1080.00       540.00         0.00       5400          0
sdg
               1079.40       539.70         0.00       5397          0
sdi
               1080.50       540.25         0.00       5402          0


[root@centostest ~]# dd if=/dev/sdb of=/dev/null bs=1M
^C173485+0 records in
173484+0 records out
181911158784 bytes (182 GB) copied, 322.139 s, 565 MB/s


[root@centostest ~]#  dd if=/dev/sdf of=/dev/null bs=1M
^C135775+0 records in
135774+0 records out
142369357824 bytes (142 GB) copied, 252.292 s, 564 MB/s