How Can I View the Available Capacity of My Disk?

In this section, CentOS 7.4 64bit is used as an example. The details depend on if you need to view the available space or not.

• To query the total capacity only, run lsblk.

  Information similar to the following is displayed:

  [root@ecs-test-0001 ~]# lsblk
  NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
  vda    253:0    0   40G  0 disk
  └─vda1 253:1    0   40G  0 part /
  vdb    253:16   0   40G  0 disk
  └─vdb1 253:17   0   40G  0 part
  
  

  In the command output, the server has two disks, /dev/vda and /dev/vdb. System disk /dev/vda has 40 GiB of capacity, as does data disk /dev/vdb.

• To query the total capacity and display the space available as well, run df -TH. Ensure that the disk has been attached and initialized before running this command.

  Information similar to the following is displayed:

  [root@ecs-0001 ~]# df -TH
  Filesystem     Type      Size  Used Avail Use% Mounted on
  /dev/vda1      ext4       43G  2.0G   39G   5% /
  devtmpfs       devtmpfs  509M     0  509M   0% /dev
  tmpfs          tmpfs     520M     0  520M   0% /dev/shm
  tmpfs          tmpfs     520M  7.2M  513M   2% /run
  tmpfs          tmpfs     520M     0  520M   0% /sys/fs/cgroup
  tmpfs          tmpfs     104M     0  104M   0% /run/user/0
  /dev/vdb1      ext4       43G   51M   40G   1% /mnt/sdc
  
  

  In the command output, the server has two partitions, /dev/vda1 and /dev/vdb1. Partition /dev/vda1 is used to deploy the OS, and its total capacity, used capacity, and available capacity are 43 GiB, 2 GiB, and 39 GiB, respectively. Partition /dev/vdb1's total capacity, used capacity, and available capacity are 43 GiB, 51 MiB, and 40 GiB, respectively.

In this section, Windows Server 2008 R2 Enterprise 64bit is used as an example.

1. On the desktop of the server, right-click Computer and choose Manage from the shortcut menu.

   The Server Manager window is displayed.

2. In the navigation tree, choose Storage > Disk Management.

   The sizes and available spaces of the volumes on the current disk are displayed in the middle pane.

   Figure 1 Disk Management page

   
   

In this section, Windows Server 2016 Standard 64bit is used as an example.

1. On the desktop of the server, click the start icon in the lower left corner.

   The Windows Server window is displayed.

2. Click Server Manager.

   The Server Manager window is displayed.

   Figure 2 Server Manager page

   
   

3. In the upper right corner, choose Tools > Computer Management.
4. Choose Storage > Disk Management.

   In the middle pane, you can view the sizes and available spaces of the volumes on the disk.

   Figure 3 Disk list page

   
   

Some disk monitoring metrics require that the agent to be installed.

For details about how to install the Agent on an ECS, see section "Installing the Agent" in the Cloud Eye User Guide.