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LUNs

You can use Storage Manager to manage LUNs.

You can access all the LUNs in the cluster by using the LUNs tab or you can access the LUNs specific to the SVM by using SVMs > LUNs .

LUNs
The tab is displayed only if you have enabled the FC/FCoE and iSCSI licenses.
  • Creating FC SAN optimized LUNs
    You can use Storage Manager to create one or more FC SAN optimized LUNs during the initial setup of a cluster on an AFA platform.
  • Application-specific LUN settings
    Storage Manager supports Oracle, SQL, and other application types while creating FC SAN optimized LUNs on an AFA cluster. LUN settings such as the LUN size are determined by rules specific to the application type. For SQL and Oracle, LUN settings are automatically created.
  • Creating LUNs
    You can use Storage Manager to create LUNs for an existing aggregate, volume, or qtree when there is available free space. You can create a LUN in an existing volume or create a new FlexVol volume for the LUN. You can also enable storage Quality of Service (QoS) to manage the workload performance.
  • Deleting LUNs
    You can use Storage Manager to delete LUNs and return the space used by the LUNs to their containing aggregates or volumes.
  • Creating initiator groups
    You can use Storage Manager to create an initiator group. Initiator groups enable you to control host access to specific LUNs. You can use port sets to limit which LIFs an initiator can access.
  • Deleting initiator groups
    You can use the Initiator Groups tab in Storage Manager to delete initiator groups.
  • Adding initiators
    You can use Storage Manager to add initiators to an initiator group. An initiator provides access to a LUN when the initiator group that it belongs to is mapped to that LUN.
  • Deleting initiators from an initiator group
    You can use the Initiator Groups tab in Storage Manager to delete an initiator. To delete an initiator from an initiator group, you must disassociate the initiator from the initiator group.
  • Creating port sets
    You can use Storage Manager to create port sets to limit access to your LUNs.
  • Deleting port sets
    You can use Storage Manager to delete a port set when it is no longer required.
  • Cloning LUNs
    LUN clones enable you to create multiple readable and writable copies of a LUN. You can use Storage Manager to create a temporary copy of a LUN for testing or to make a copy of your data available to additional users without providing them access to the production data.
  • Editing LUNs
    You can use the LUN properties dialog box in Storage Manager to change the name, description, size, space reservation setting, or the mapped initiator hosts of a LUN.
  • Bringing LUNs online
    You can use the LUN Management tab in Storage Manager to bring selected LUNs online and make them available to the host.
  • Taking LUNs offline
    You can use the LUN Management tab in Storage Manager to take selected LUNs offline and make them unavailable for block protocol access.
  • Moving LUNs
    You can use Storage Manager to move a LUN from its containing volume to another volume or qtree within a storage virtual machine (SVM) . You can move the LUN to a volume that is hosted on an aggregate containing high-performance disks, thereby improving the performance when accessing the LUN.
  • Assigning LUNs to storage QoS
    You can use Storage Manager to limit the throughput of LUNs by assigning them to storage Quality of Service (QoS) policy groups. You can assign storage QoS for new LUNs or modify storage QoS details for LUNs that are already assigned to a policy group.
  • Editing initiator groups
    You can use the Edit Initiator Group dialog box in Storage Manager to change the name of an existing initiator group and its operating system. You can add initiators to or remove initiators from the initiator group. You can also change the port set associated with the initiator group.
  • Editing initiators
    You can use the Edit Initiator Group dialog box in Storage Manager to change the name of an existing initiator in an initiator group.
  • Editing port sets
    You can use the Portsets tab in Storage Manager to edit settings related to port sets.
  • Viewing LUN information
    You can use the LUN Management tab in Storage Manager to view details about a LUN, such as its name, status, size, and type.
  • Viewing initiator groups
    You can use the Initiator Groups tab in Storage Manager to view all the initiator groups and the initiators mapped to these initiator groups, and the LUNs and LUN ID mapped to the initiator groups.
  • Guidelines for working with FlexVol volumes that contain LUNs
    When you work with FlexVol volumes that contain LUNs, you must change the default settings for Snapshot copies. You can also optimize the LUN layout to simplify administration.
  • Understanding space reservations for LUNs
    Understanding how the space reservation setting (combined with the volume guarantee) affects how space is set aside for LUNs helps you to understand the ramifications of disabling space reservations, and why certain combinations of LUN and volume settings are not useful.
  • Guidelines for using LUN multiprotocol type
    The LUN multiprotocol type, or operating system type, specifies the operating system of the host accessing the LUN. It also determines the layout of data on the LUN, and the minimum and maximum size of the LUN.
  • Understanding LUN clones
    LUN clones are writable, space-efficient clones of parent LUNs. Creating LUN clones is highly space-efficient and time-efficient because the cloning operation does not involve physically copying any data. Clones help in space storage utilization of the physical aggregate space.
  • Initiator hosts
    Initiator hosts can access the LUNs mapped to them. When you map a LUN on a storage system to the igroup, you grant all the initiators in that group access to that LUN. If a host is not a member of an igroup that is mapped to a LUN, that host does not have access to the LUN.
  • igroup name
    The igroup name is a case-sensitive name that must satisfy several requirements.
  • igroup type
    The igroup type can be mixed type, iSCSI, or FC/FCoE.
  • igroup ostype
    The ostype indicates the type of host operating system used by all of the initiators in the igroup. All initiators in an igroup must be of the same ostype. The ostypes of initiators are solaris, windows, hpux, aix, netware, xen, hyper_v, vmware, and linux.
  • LUNs window
    You can use the LUNs window to create and manage LUNs and to display information about LUNs. You can also add, edit, or delete initiator groups and initiator IDs.
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