Disk Usage df -H

Filesystem                        Size  Used Avail Use% Mounted on
/dev/mapper/centos-root           8.4G   76M  8.4G   1% /
devtmpfs                          4.1G     0  4.1G   0% /dev
tmpfs                             4.1G  672k  4.1G   1% /dev/shm
tmpfs                             4.1G  9.5M  4.1G   1% /run
tmpfs                             4.1G     0  4.1G   0% /sys/fs/cgroup
/dev/mapper/centos-usr             13G  4.5G  8.2G  36% /usr
/dev/sdb2                         521M  124M  397M  24% /boot
/dev/sdb1                         210M   10M  200M   5% /boot/efi
/dev/mapper/centos-tmp            8.4G  101M  8.3G   2% /tmp
/dev/mapper/centos-opt            4.2G  222M  4.0G   6% /opt
/dev/mapper/centos-var            8.4G  650M  7.8G   8% /var
/dev/mapper/centos-usr_local      4.2G   34M  4.2G   1% /usr/local
/dev/mapper/centos-home           418G  728M  418G   1% /home
/dev/mapper/centos-var_log        8.4G   40M  8.4G   1% /var/log
/dev/mapper/centos-var_ftp         17G   34M   17G   1% /var/ftp
/dev/mapper/centos-var_tmp        8.4G  221M  8.2G   3% /var/tmp
/dev/mapper/centos-var_www         17G   34M   17G   1% /var/www
/dev/mapper/centos-var_log_audit  4.2G   41M  4.2G   1% /var/log/audit

Partitions ssm list

-------------------------------------------------------------
Device        Free       Used      Total  Pool    Mount point
-------------------------------------------------------------
/dev/sda                       465.76 GB          PARTITIONED
/dev/sda1  0.00 KB  465.76 GB  465.76 GB  centos             
/dev/sdb                        29.82 GB                     
/dev/sdb1                      200.00 MB          /boot/efi  
/dev/sdb2                      500.00 MB          /boot      
/dev/sdb3  0.00 KB   29.13 GB   29.13 GB  centos             
-------------------------------------------------------------
----------------------------------------------------
Pool    Type  Devices     Free       Used      Total  
----------------------------------------------------
centos  lvm   2        0.00 KB  494.89 GB  494.89 GB  
----------------------------------------------------
--------------------------------------------------------------------------------------------------
Volume                     Pool    Volume size  FS      FS size       Free  Type    Mount point   
--------------------------------------------------------------------------------------------------
/dev/sdb2                            500.00 MB  xfs   496.67 MB  403.61 MB          /boot 
/dev/sdb1                            200.00 MB  vfat                                /boot/efi     
/dev/centos/home           centos    389.42 GB  xfs   389.23 GB  389.18 GB  linear  /home         
/dev/centos/opt            centos      3.91 GB  xfs     3.90 GB    3.90 GB  linear  /opt 
/dev/centos/root           centos      7.81 GB  xfs     7.80 GB    7.77 GB  linear  / 
/dev/centos/swap           centos     11.72 GB                              linear                
/dev/centos/tmp            centos      7.81 GB  xfs     7.80 GB    7.80 GB  linear  /tmp
/dev/centos/usr            centos     11.72 GB  xfs    11.71 GB    8.46 GB  linear  /usr          
/dev/centos/usr_local      centos      3.91 GB  xfs     3.90 GB    3.90 GB  linear  /usr/local 
/dev/centos/var            centos      7.81 GB  xfs     7.80 GB    7.49 GB  linear  /var
/dev/centos/var_ftp        centos     15.62 GB  xfs    15.62 GB   15.62 GB  linear  /var/ftp  
/dev/centos/var_log        centos      7.81 GB  xfs     7.80 GB    7.80 GB  linear  /var/log      
/dev/centos/var_log_audit  centos      3.91 GB  xfs     3.90 GB    3.90 GB  linear  /var/log/audit
/dev/centos/var_tmp        centos      7.81 GB  xfs     7.80 GB    7.80 GB  linear  /var/tmp           
/dev/centos/var_www        centos     15.62 GB  xfs    15.62 GB   15.62 GB  linear  /var/www              
---------------------------------------------------------------------------------------------------

Physical Layout lsblk -f

NAME                     FSTYPE      LABEL UUID                                   MOUNTPOINT
sda                                                                               
└─sda1                   LVM2_member       a334rb-LNkM-dAIj-N6kW-hIx8-Hx2Y-Ezj1Y3 
  ├─centos-usr           xfs               59f1078f-b490-49ad-857e-19e900ca1bb1   /usr
  ├─centos-root          xfs               88a3ed46-8b52-4af0-bc01-08919c56273a   /
  ├─centos-var_log       xfs               3e34c5c0-c57d-43e2-b8b9-10fa85a099b2   /var/log
  ├─centos-var_log_audit xfs               db59e840-4895-4d89-8f3a-fa48f3ec6788   /var/log/audit
  ├─centos-usr_local     xfs               604610c6-92b4-4345-8902-2534958c71ff   /usr/local
  ├─centos-var           xfs               732fcdf5-58a2-4c39-b609-87ffb9b2d8f6   /var
  ├─centos-var_www       xfs               f94144df-5048-4fb7-b138-6ab64c91299e   /var/www
  ├─centos-opt           xfs               7f1f28a6-c1ca-4e53-9be6-2021401aa634   /opt
  ├─centos-var_ftp       xfs               38c8ac21-b627-4a75-ba17-5eb1b3cb5486   /var/ftp
  ├─centos-var_tmp       xfs               8acfbc0c-be82-4ef7-822a-170ea6abefac   /var/tmp
  └─centos-home          xfs               91854fad-c0e5-49dd-9fd8-fe0788c43659   /home
sdb                                                                               
├─sdb1                   vfat              80E2-BDAF                              /boot/efi
├─sdb2                   xfs               59d38d61-952a-4f94-bb78-a0874416cd51   /boot
└─sdb3                   LVM2_member       Y14PAN-0zpI-RyPp-yppy-Wbrp-JNEH-Y3Rip6 
  ├─centos-swap          swap              f8ac001a-79de-4774-b893-8de417d3ad09   [SWAP]
  ├─centos-root          xfs               88a3ed46-8b52-4af0-bc01-08919c56273a   /
  ├─centos-tmp           xfs               3e2373b7-9a87-46a7-86f0-a9105e85cb78   /tmp
  └─centos-opt           xfs               7f1f28a6-c1ca-4e53-9be6-2021401aa634   /opt 

Commentary

This is the partitioning structure used on my Dell 15z Laptop. I also set up servers in a similar manner, though some of them may have six (or more) hard disk drives. Occasionally, I need to be able to access files without access to the Internet. This configuration facilitates the operation of local provision servers. I also find it convenient to serve those files via a local Git repository, web server, and/or ftp server - all running on the laptop.

The partitioning structure works well for servers also. There are plenty of web resources discussing the various methodologies as to creating Linux partitions, so I will keep things simple.

/boot
Boot from the on-board 32GB SSD and start the Centos LVM in the left over 29 GBs. Why? If the 500GB is removed from the laptop, recovery is going to be extremely difficult.
/opt
Google Chrome and other software will install to the opt directory. I prefer to keep these types of installations away from the operating system.
/tmp
Typically emptied upon reboot.
/var/ftp
Combined with PureFTP for secure FTP for anonymous transfers.
/var/tmp
I have read articles which suggest binding /var/tmp to /tmp. In short, they are not the same. /var/tmp does not get emptied upon reboot and Gnome 3 seems to like it without the noexec attribute set in fstab.
/var/www
For the web server. I provide plenty of room to work on projects as well as run a server for clients to interact with.
/vars/*
The various /var partitions are split off to keep them from filling up the hard drive and shutting down the system due to DDOS or other activity.

In this article