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Administrator Guide 15

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

Routine maintenance activities are the most common activities for the storage device, including powering on or off the storage device, managing users, modifying basic parameters of the storage device, and managing hardware components. This document applies to the system administrators who are responsible for carrying out routine maintenance activities, monitoring the storage device, and rectifying common device faults.
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Allocating Storage Space

Allocating Storage Space

This section describes how to allocate storage space to a new service on an application server.

Prerequisites

  • You have performed operations described in Pre-Configuration Check and the storage system environment is normal.
  • Communication is normal between the storage system and the application server that requires storage space allocation.
  • You have confirmed the application server to which the new LUN is mapped and the size of the LUN to be mapped is not larger than the maximum capacity that the application server's operating system can identify.
  • A storage pool with sufficient storage space can be used for creating LUNs. For details about how to expand a storage pool, see "Expand a storage pool" in Expanding a LUN.

Procedure

  1. On the right navigation bar of the DeviceManager, click Provisioning.
    The Provisioning page is displayed.
  2. Create a LUN and LUN group.
    1. In the Block Storage Service area, click LUN.
      The LUN page is displayed.
    2. Click Create.
      The Create LUN page is displayed.
    3. Set LUN parameters as required by the new service. Table 4-2 describes the main parameters.

      Table 4-2  Main parameters for creating a LUN

      Parameter

      Description

      SmartThin

      Enables SmartThin for you to create thin LUNs. A thin LUN is first allocated an initial amount of storage space, and the storage space increases as data is written onto the thin LUN.

      Capacity

      Indicates the actual storage space assigned to the LUN. The capacity you set is the actual capacity that can be used by the LUN.

      Quantity

      Indicates the quantity of LUNs to be created. The storage system allows you to create multiple LUNs at a time. Each LUN is assigned the same capacity and automatically named.

    4. Click OK.
    5. On the LUN page, click the LUN Group tab.
      The LUN Group page is displayed.
    6. Click Create.
      The Create LUN Group page is displayed.
    7. In the LUN area, select the LUN you have created and click to add it to the new LUN group.
    8. Click OK.
  3. Optional: Allocate a port group to the LUN group. If you want the LUN group to transfer data through fixed ports without interference, perform this step.
    1. On the Provisioning page, click Port.
      The Port page is displayed.
    2. On the Port page, confirm the ports used for transferring data between the LUN group and your application server.
    3. Choose Port Group > Create.
      Select the ports and click to add them to the port group. After you add them, the LUN can transfer data to the application server only through the ports in the port group.
      • Physical ports are bonded to create a bond port that cannot be added to the port group.
      • After the physical ports that are bonded are added to the port group, the port mapping does not take effect.
    4. Click OK.
  4. Create a mapping view.
    1. On the Provisioning page, click Mapping View.
      The Mapping View page is displayed.
    2. Click Create.
      The Create Mapping View dialog box is displayed.
    3. Select the new LUN group, host group, and port group (optional). Click OK.
      After creating the mapping view, click LUN Group in the Details area to check LUNs included in the mapping view. Click Host Group to check the LUN group included in the mapping view. Hosts in the host group can use LUNs in the LUN group.

Result

On the application server, scan for disks to detect the LUN you have created. You can use the LUN as a normal disk for data reads and writes.

Follow-up Procedure

If you want to adjust storage resources, refer to "Expand a storage pool" in Expanding a LUN on the Storage System.

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Updated: 2019-04-17

Document ID: EDOC1000084191

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