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Basic Storage Service Configuration Guide for File

OceanStor V3 Series V300R006

This document is applicable to OceanStor 2200 V3, 2600 V3, 5300 V3, 5500 V3, 5600 V3, 5800 V3, 6800 V3, 18500 V3, and 18800 V3. It describes the basic storage services and explains how to configure and manage them.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Creating a Storage Pool

Creating a Storage Pool

This section describes how to create storage pools for application servers to use the storage space provided by a storage system.

Prerequisites

A disk domain has been created.

Context

  • You are advised to use different disk domains to create storage pools for the block storage service and file storage service.
  • A storage pool is a logical combination of one or multiple storage tiers in a disk domain. Different storage tiers may have different RAID policies.
  • A RAID policy includes a RAID level and the number of data blocks and parity blocks for this RAID level.
  • A RAID level is available in typical and flexible configurations based on the number of data blocks and parity blocks. Table 3-4 describes the detailed configurations.
    Table 3-4 RAID level configuration

    RAID Level

    Typical Configuration

    Flexible Configuration

    RAID 0

    -

    -

    RAID 1

    • 2Da
    • 4D

    -

    RAID 10

    -

    -

    RAID 3

    • 2D+1Pb
    • 4D+1P
    • 8D+1P

    2D+1P to 13D+1P

    RAID 5

    • 2D+1P
    • 4D+1P
    • 8D+1P

    2D+1P to 13D+1P

    RAID 50

    • (2D+1P) x 2
    • (4D+1P) x 2
    • (8D+1P) x 2

    -

    RAID 6

    • 2D+2P
    • 4D+2P
    • 8D+2P
    • 16D+2P

    2D+2P to 26D+2P

    a: D indicates a data block.

    b: P indicates a parity block.

    NOTE:

    If the RAID level of one storage tier is configured with flexible configuration first, this tier is the primary control tier that controls other tiers' RAID policies. The number of RAID data blocks of the primary control tier and the number of RAID data blocks of other tiers must be a multiple of 1, 2, 4, or 8. For example, if the performance tier is the primary control tier and its RAID policy is 3D+1P, the RAID policy of other tiers must be 3D+1P, 6D+2P, or so on, and cannot be 4D+1P. If you want to change the current primary control tier, deselect this tier and select it again.

Procedure

  1. Log in to DeviceManager.
  2. Choose Provisioning > Storage Pool.
  3. Click Create.

    The Create Storage Pool dialog box is displayed.

    NOTE:

    GUIs may vary with product versions and models. The actual GUIs prevail.

  4. Name and describe the storage pool.

    1. Specify Name.
      NOTE:
      • The name must be unique.
      • The name can contain only letters, digits, periods (.), underscores (_), and hyphens (-).
      • The name must contain 1 to 31 characters.
    2. Specify Description.

      Descriptive information, such as the function and properties of the storage pool, helps identify the storage pool.

  5. In Usage, select File Storage Service.

    NOTE:

    Usage is unchangeable after being configured.

    • A storage pool whose Usage is Block Storage Service allows you to create LUNs only.
    • A storage pool whose Usage is File Storage Service allows you to create file systems only.

    To optimize performance, use different disk domains to create storage pools for the block storage service and file storage service.

  6. In Disk Domain, select the disk domain that the storage pool belongs to.
  7. In Storage Medium, select the storage tiers needed for the storage pool and set related parameters.

    1. Select storage tiers that meet service requirements.
    2. Set basic properties for the storage tiers.
      Table 3-5 describes the related parameters.
      Table 3-5 Storage tier parameters

      Parameter

      Description

      Setting

      RAID Policy

      RAID level. The system supports RAID 0, RAID 1, RAID 10, RAID 3, RAID 5, RAID 50, and RAID 6.

      NOTE:

      RAID 0 can only be configured using the CLI. For details, see the command reference specific to your product model.

      Select a RAID policy based on the service plan.

      The default RAID policy of a storage tier varies with the number of disks allocated to the storage tier. Details are as follows:

      • If the number of disks allocated to a storage tier is smaller than 10:
        • High-performance tier: RAID 10
        • Performance tier: RAID 5 (4D+1P)
        • Capacity tier: RAID 6 (4D+2P)
      • If the number of disks allocated to a storage tier is equal to 10:
        • High-performance tier: RAID 10
        • Performance tier: RAID 5 (8D+1P)
        • Capacity tier: RAID 6 (4D+2P)
      • If the number of disks allocated to a storage tier is greater than 10:
        • High-performance tier: RAID 10
        • Performance tier: RAID 5 (8D+1P)
        • Capacity tier: RAID 6 (8D+2P)
      NOTE:

      If the number of SSDs in a disk domain is two or three, you are advised to configure RAID 1 (2D) for the high-performance tier.

      Capacity

      Capacity that the storage tier provides for the storage pool.

      Three capacity levels are provided: TB, GB, and PB.

      NOTE:

      If you select Use all available capacity, the storage system allocates all available capacity in this storage tier to the new storage pool.

      The capacity must be no larger than the available capacity of the storage tier.

      NOTE:

      You are advised to configure RAID 6 for the capacity tier to ensure data security.

  8. For V300R006C50 and later versions, configure whether the system uses the enhanced data protection policy.

    Table 3-6 describes the related parameters.
    Table 3-6 Related parameters

    Parameter

    Description

    Setting

    Use the enhanced data protection policy

    After Use the enhanced data protection policy is selected, the system will check service configurations according to the recommended data protection policy to avoid configurations with low reliability.

    NOTE:

    Some product versions do not support this parameter. The actual GUIs prevail.

    [Default value]

    Enable

  9. Set properties of the storage pool.

    1. Click Advanced to set advanced properties for the storage pool.

      Table 3-7 describes the related parameters.

      NOTE:

      GUIs may vary with product versions and models. The actual GUIs prevail.

      Table 3-7 Storage pool advanced parameters

      Parameter

      Description

      Setting

      Used Capacity Alarm Threshold (%)

      If the storage pool contains a file system with value-added services or a thin file system, an alarm will be generated when the percentage of the storage pool's used capacity to its total capacity reaches the used capacity alarm threshold. Alarms are generated in the following circumstances:

      • When the used capacity reaches the used capacity alarm threshold, the system generates an alarm informing that the capacity of storage pool is insufficient.
      • When the used capacity alarm threshold is not greater than 88 and the used capacity reaches 90%, the system generates an alarm informing that the storage pool is running out.
      • When the used capacity alarm threshold is greater than 88 and the used capacity reaches (used capacity alarm threshold + 2) %, the system generates an alarm informing that the storage pool is running out.
      NOTE:

      If the used capacity alarm threshold is set to 85:

      • When the used capacity reaches 85%, the system generates an alarm informing that the capacity of storage pool is insufficient.
      • When the used capacity reaches 90%, the system generates an alarm informing that the storage pool is running out.

      If the used capacity alarm threshold is set to 91:

      When the used capacity reaches 93%, the system generates an alarm informing that the storage pool is running out.

      A proper used capacity alarm threshold helps you monitor the capacity usage of a storage pool.

      [Value range]

      1 to 95

      [Default value]

      80

      Stripe Depth

      Stripe refers to that continuous data is divided into data blocks of the same size and data blocks are distributed on different disks. In this way, I/O loads are balanced among disks, improving read/write performance.

      Stripe depth refers to the stripe size, indicating the size of data blocks on each disk. A smaller stripe size indicates smaller data blocks. Smaller data blocks are distributed on more disks, improving transmission performance. However, more time is required to find different data blocks, decreasing disk locating performance. On the contrary, fewer data blocks indicate lower transmission performance but higher disk locating performance.

      Possible values for this parameter are:

      • Automatically Selected

        The system automatically selects the optimal stripe depth.

      • 32 KB
      • 64 KB
      • 128 KB

        128 KB is recommended for random read/write services (such as database services).

      • 256 KB
      • 512KB

        512 KB is recommended for sequential read/write services (such as Media & Entertainment services)

      NOTE:

      The parameter value cannot be changed after being set.

      [Default value]

      Automatically Selected

    2. Click OK.

  10. In the Create Storage Pool dialog box, click OK.

    NOTE:

    If a security alert dialog box is displayed, confirm the information in the dialog box and select I have read and understand the consequences associated with performing this operation. Click OK.

    The Execution Result dialog box is displayed, indicating that the operation succeeded.

  11. Click Close.
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Updated: 2019-07-12

Document ID: EDOC1000138856

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