Why do I have 2 smbd running?

Question

linux

[email protected]:/home/rock# smbstatus

Samba version 4.1.6-Ubuntu
PID     Username      Group         Machine
-------------------------------------------------------------------

Service      pid     machine       Connected at
-------------------------------------------------------

No locked files

[email protected]:/home/rock# smbstatus -V
Version 4.1.6-Ubuntu
[email protected]:/home/rock# ps axu | grep smb
root       710  0.0  0.2  24712  5952 ?        Ss   04:11   0:05 smbd -F
root       738  0.0  0.1  24712  2976 ?        S    04:11   0:00 smbd -F
root     11400  0.0  0.0   3304   672 pts/5    S+   23:26   0:00 grep --color=auto smb
[email protected]:/home/rock# uname -a
Linux ELISEY-SRV 3.0.36+ #11 SMP PREEMPT Sat Aug 23 17:07:55 CST 2014 armv7l armv7l armv7l GNU/Linux
[email protected]:/home/rock# lsb_release -a
No LSB modules are available.
Distributor ID: Linaro
Description:    Linaro 14.04
Release:        14.04
Codename:       trusty