System Storage

When you create a virtual server, select a bootable block storage source as system storage.

Select from the following sources:

  • Image

    Create block storage from an image (such as an OS image provided by Fujitsu or an image created by the user from a virtual server) and attach it to the virtual server.

    Table 1. OS Image and System Storage Size
    OS Size of System Storage Specified
    Windows 2008 R2 SP1 80 GB or more
    Windows 2012 R2 80 GB or more
    Windows 2012 80 GB or more
    Windows 2016 80 GB or more
    Red Hat Enterprise Linux 6.x (x is a number) 40 GB
    Red Hat Enterprise Linux 7.x (x is a number) 40 GB
    CentOS 6.x (x is a number) 30 GB or more
    CentOS 7.x (x is a number) 30 GB or more
    Ubuntu Server 14.04 LTS 3 GB or more
    Ubuntu Server 16.04 LTS 3 GB or more
    Red Hat OpenShift Container Platform 3.x (Node) (x is a number) 70 GB or more
    Red Hat OpenShift Container Platform 3.x (Master) (x is a number) 70 GB or more
    Tip:
    • When you create a virtual server, specify whether to retain the system storage of the server upon deletion.
    • If you specify to retain the system storage, we recommend that you stop the server in advance in order to avoid damage to the data in the system storage.
    • Do not use a high performance type storage as a system storage. If you use it as a system storage, the creation of virtual servers may become delayed or may fail.

  • Existing block storage

    Attach existing bootable block storage to create a virtual server.

  • Snapshot of existing block storage

    Create a snapshot from existing bootable block storage, and attach the snapshot to create a virtual server.

Block Device Mapping Settings

To attach block storage to a virtual server, you must configure the block device mapping settings. Create new block storage from the specified resource, and attach it as a boot device for the virtual server. Then start the block storage.

Table 2. List of Items That Can Be Set for Device Mapping Settings
Item Description Required
Device Name

Specify a device name in "/dev/vd*" format, where * is a character string that is valid as a device name.

Example: /dev/vda

Note: We recommend that you specify "/dev/vda" as the device name for system storage.
 Yes
Source Type

Specify one of the following:

  • Image (image)
  • Existing block storage (volume)
  • Snapshot of existing block storage (snapshot)
 Yes
Connected to You can specify "volume" only. Yes
Boot Sequence Specify the order in which the devices start. To set up the block storage as a boot disk, specify 0. Yes
Resource ID Specify the ID of the resource selected in [Source Type]. Yes
Block Storage Size

Specify the size of the block storage that you want to create.

Note:

The notes for each source type specified are as follows:

  • When you have specified "image": Make sure that you specify a valid size.
  • When you have specified "volume": The same block storage size as the source is used. Even if you specify a value, it is ignored.
  • When you have specified "snapshot": If you omit this field, the size will be the same as the snapshot source block storage.
  
Volume Type

Specify the type name of a block storage.

Note:

The notes for each source type specified are as follows:

  • When you have specified "image": You can select a storage type (only M1). If you omit this field, M1 is selected.
  • When you have specified "volume": The storage type cannot be changed. Even if you specify a value, it is ignored.
  • When you have specified "snapshot": The storage is created with the volume type of the volume in the snapshot source. Even if you specify a value, it is ignored.
  
Delete Flag

Specify whether block storage that is created when the system is scaled out or when a stack is created will be deleted when the system is scaled in or when the stack is deleted. Specify "true" to delete storage.

Note: Even if you specify "true," block storage is not deleted if a snapshot has been taken of it.
  

Points to Note

  • You cannot detach the system storage from the virtual server.