NVMe namespaces window

Contributors netapp-ivanad

You can use the NVMe namepaces window to set up and manage your namespaces and associated subsytems for the NVMe protocol. You can search for an existing namespace using the namespace path.

Command Buttons

  • Create

    Opens the NVMe namespace create dialog box, which allows you to set up a new namespace and map it to an NVMe subsystem.

  • Edit

    Enables you to edit the namespace mapping.

  • Delete

    Deletes the selected namespace.

  • More Actions

    Allows you to create a clone of the selected namespace, which can be associated with an existing subsystem, or you can choose not to map it to a subsystem.

  • Refresh

    Updates the information in the window.

NVMe List

  • Status

    Displays if the namespace is online or offline.

  • Namespace Path

    The path to the new namespace in the /vol/volume'/file format. The namespace path is a clickable link. Clicking the link takes you to the namespace detailspage.

  • NVMe Subsystem

    The name of the subsystem attached to a namespace. If no subsystems are attached, the value of this column is shown as None. You can see the list of unmapped namespaces by filtering this column for NVMe subsystem contains None.

  • SVMs

    The SVM name on which the namespace is created. The SVM name is a clickable link. Clicking the link takes you to the existing SVM dashboard page.

    Starting with ONTAP 9.5, at least one NVMe LIF must be configured for each node of a HA pair associated with the SVM. You can create a maximum of two NVMe LIFs for each node in the pair.

  • Namespace ID

    A unique identifier used by the controller to provide access to a namespace. This is not a user input; it is generated by the system when the new namespace is created.

  • Total Space

    Displays the total size of the namespace.

  • Used Space

    Displays the amount of used space in the namespace.

  • %Used

    Displays the amount of space (in percentage) that is used in the namespace. The value for this field is calculated using total and used space.

Details Area

You can select a namespace to view information about the selected namespace. From this area, you can also edit, delete or clone the namespace.

  • Overview tab

    Displays general information about the selected namespace, and displays a pictorial representation of the space allocation of the namespace and the performance of the namespace.

    In the Overview tab, the SVM and volume names are clickable links. Clicking the link takes you to the SVM and volume pages, respectively. The number of hosts can be one or more; by default two host names are shown. If more than two host names are shown, you can click a link to access the additional hosts.

    The Overview tab also displays a space chart that shows the total and used space details for the namespace and a performance chart that shows details such as latency, IOPS, and throughput.

  • Status

    The status of the namespace; the value can be online or offline.

  • Host NQN

    The host NVMe Qualified Names (NQNs) uniquely describes the host for the purposes of identification and authentication. This field can accept comma separated NVMe qualification name (NQN) values. The host NQN starts with nqn and rest of the validation is the same as the initiator qualification name (IQN).

  • Host OS

    The host operating system for the namespace: Hyper-V, Linux, VMware, Windows or Xen.

  • Volume

    Displays the volume name on which the namespace is hosted.

  • Read-Only

    Displays whether the namespace is read-only or not.

  • Node

    The node that owns the namespace.

  • Block Size

    The size of the storage block.

  • Restore Inaccessible

    If unmapping a subsystem fails and partial data remains, unmapped namespaces cannot be restored.