ZFS

ZFS Database Recommendations

To see transfer rates on a disk, run zpool as follows. The last column shows per-second data written:
$  /usr/sbin/zpool iostat foo 5 5555555
               capacity     operations    bandwidth
pool         used  avail   read  write   read  write
----------  -----  -----  -----  -----  -----  -----
foo         45.2G  1.31T      0      0   113K  50.9K

foo         45.2G  1.31T      0    127      0  13.8M
foo         45.3G  1.31T      0    130      0  14.2M
foo         45.4G  1.31T      0    123      0  13.6M
foo         45.5G  1.31T      0    134      0  14.9M
foo         45.5G  1.31T      0    139      0  14.4M

To see ZFS properties, like recordsize:

$ /usr/sbin/zfs get recordsize zfs-dataPROD1
NAME           PROPERTY    VALUE          SOURCE
zfs-dataPROD1  recordsize  16K            local

$ /usr/sbin/zfs get recordsize zfs-data
NAME      PROPERTY    VALUE     SOURCE
zfs-data  recordsize  128K      default
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