Using storage

Available in VPC

To use an added storage, you need to mount the storage or register the storage to the server as a volume. The following describes how to mount the storage to the Linux server and how to register the storage volume to the Windows server.

Mounting storage (Linux)

To use the added storage, you need to mount the storage on the Linux server. To mount an added storage, proceed with the following steps in order:

• 1. Checking storage status
• 2. Partitioning disk
• 3. Formatting storage
• 4. Mounting storage
• 5. Maintaining mounting settings (fstab settings)

1. Checking storage status

To connect to the server and check the storage status, do the following:

1. Connect to the Linux server on which to mount the added storage.
   • For more information on how to connect to the server, see Access Linux server.
2. Enter the su - command and enter the password one more time.
   • You are logged in with the root permission.
3. Enter the fdisk -l command to check that the disk /dev/xvdb has been added.

2. Partitioning disk

To make disk partitioning settings, do the following:

1. Enter the fdisk /dev/xvdb command.
2. Enter n in the Command prompt.
3. To create a primary type partition, enter p. To create an extended type partition, enter e.
4. Enter a number and sector for the partition to create.
   • To mount the entire disk, enter the default values.
5. Enter w in the Command prompt.
   • The partition settings are applied.

3. Formatting storage

To set the file system to the partition, do the following:
From the following commands, enter the applicable one for the image of the server to mount to format the partition.

• CentOS 7.x: mkfs.xfs /dev/xvdb1
• Rocky Linux 8.x: mkfs.xfs /dev/xvdb1
• Ubuntu: mkfs.ext4 /dev/xvdb1
• If the disk is encrypted: mkfs.xfs /dev/mapper/crypt_sd[파티션명]

4. Mounting storage

To mount a storage, do the following:

1. Enter the mkdir /mnt/a command to create the directory.

   • The mount point /mnt/a is created.

2. Enter the mount /dev/xvdb1 /mnt/a command to connect the storage and the directory.

   • The storage is mounted on /mnt/a. You can now use the storage.

3. Enter the df -k command to check if the mount is completed properly.

   • The /dev/xvdb1 mount directory is displayed on the file system list.

   Filesystem      Inodes IUsed   IFree IUse% Mounted on
   /dev/vda2      4718080 74947 4643133    2% /
   /dev/vda1       524288   333  523955    1% /boot
   /dev/xvdb1       49984     3   49981    1% /mnt/a
   

5. Maintaining mounting settings (fstab settings)

To maintain the mounting settings after the Linux server is booted, you need to change the volume settings in /etc/fstab. /etc/fstab is the path that stores the volume information to be mounted in the booting stage. To change the volume settings to maintain the storage mounting information after booting, do the following:

1. Enter the following command to open the volume information configuration file.

   vi  /etc/fstab
   

2. See the following table to add the settings of the xvdb1 volume.

   • Example of volume information

     /dev/xvdb1      /mnt/a      ext4        defaults        1       2
     

     Column	Meaning	Description
     /dev/xvdb1	Volume name	Displays the name of the volume
     /mnt/a	Mount point	Location where the volume is to be mounted
     ext4	File system type	ext4: Ubuntu xfs: CentOS 7.x
     defaults	Option	defaults: option with all the properties of auto, rw, nouser, exec, and suid options auto: mount automatically when booting noauto: do not automatically mount upon booting rw: mount with read and write support ro: mount as read only nouser: permits mounting for root account only user: permits mounting for root and regular accounts exec: permits file execution suid: permits SetUID and SetGID nofail: option to continue the booting process without pause even when the file system for mounting is unavailable for use
     1	Dump settings	0: file system where dump does not occur 1: file system where dump is available
     2	fsck settings	0: fsck is not run upon booting 1: checks by prioritizing the root file system upon booting 2: checks by prioritizing file system other than root upon booting

3. Enter the :wq command to end the editor.

Unmounting storage (Linux)

To unmount the storage mounted on the Linux server, do the following:

1. Connect to the Linux server from which to unmount the storage.
   • For more information on how to connect to the server, see Access Linux server.
2. Enter the umount /mnt/a command.
   • The storage mounted on /mnt/a is unmounted.

Registering storage volume (Windows)

To use an added storage, you need to register the storage as a volume to the Windows server. To register an added storage as a volume, proceed with the following steps in order:

• 1. Reset disk
• 2. Create and format volume

1. Reset disk

To reset a disk, do the following:

1. Connect to the Windows server to which to register the added storage as a volume.
   • For more information on how to connect to the server, see Access Windows server.
2. Click and then click the Windows Administrative Tools > Computer Management > Disk Management menus, in that order.
   • Alternatively, you can enter diskmgmt.msc on the Run command window.
3. On the Reset disk pop-up, select the disk to add, select Mater Boot Record (MBR), and click [OK].
   • The disk is reset.
   • If no pop-up appears, find the disk indicated as Not Initialized on the disk list, right-click on the disk name, and click Initialize Disk.

2. Create and format volume

To create and format the storage volume to the server, do the following:

1. On the disk list, find the disk indicated as Unallocated, right-click on the disk name, and click New Simple Volume.
2. Click the [Next] button.
3. Enter the volume size and click [Next].
4. Select the drive letter to allocate and click [Next].
5. Set the partition format and click [Next].
6. Check the settings and click the [Finish] button.
   • Once formatting is completed and the disk status shows normal, the storage is ready for use.

Unmounting storage volume (Windows)

To disconnect the registered storage volume on the Windows server, do the following:

1. Connect to the Windows server.
   • For more information on how to connect to the server, see Access Windows server.
2. Click and then click the Windows Administrative Tools > Computer Management > Disk Management menus, in that order.
   • Alternatively, you can enter diskmgmt.msc on the Run command window.
3. On the list that appears, find the partition to expand, right-click on the partition name, and click Offline.
   • The disk is disconnected from the server, and the partition status shows Offline.

Connecting to server

To set up and use storage after you create a storage, you must connect the storage to a server. Connect storage to a server, and then proceed with the storage mounting task. For more information on how to connect to the server, see Connect to server.

Disconnecting from server

Before you delete a storage, you must disconnect it from the server. Likewise, when you transfer storage to another server, disconnect it from the server first. For more information on how to disconnect from the server, see Disconnect from server.