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eSight V300R010C00SPC200, 300, and 500 Operation Guide 09

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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).
Common Configuration Management

Common Configuration Management

Creating a Common Configuration Template

Describes how to create a common configuration template.

Context

You can preset a common configuration template for storage pool, LUN, and host mapping configuration. The template contains the required configuration parameters. You can directly use this template when creating similar configuration tasks.

Procedure

  • Creating a template for common storage pool configuration
    1. Go to the common configuration page.
      1. On the menu bar, choose Resource > Storage Subnet.

      2. In the navigation tree, choose Storage Resources Allocation > Manage Common Configuration.
    2. Click Create.

      The common configuration page is displayed.

    3. Set common configuration parameters.
      Table 10-37 Common configuration parameters

      Parameter

      Description

      Example

      Basic Configuration

      Name

      Name of a common configuration.

      PoolCfgName

      Type

      Type of a common configuration.

      Storage pool configuration

      Description

      Description of a common configuration.

      S5800 storage pool common configuration

      Storage pool name

      Name of a storage pool.

      If multiple storage pools are created, a suffix is added to each storage pool name to distinguish the names from each other, for example, Pool5800_001.

      Pool5800

      Capacity

      Capacity of a storage pool.

      512 GB

      Number of storage pools

      Number of storage pools.

      5

      Total capacity

      Total capacity of storage pools

      -

      Advanced Configuration

      Storage Media

      You can divide storage media that provides the same performance into a storage tier, set a RAID policy for each tier, and allocate capacity to each tier based on performance requirements.

      • High-performance tier (SSD): This tier provides the highest performance and contains costly storage media with small per disk capacity. This tier is applicable to applications that has high requirements for random read and write performance, for example, database indexes.
      • Performance tier (SAS): This tier provides relative high performance and contains reasonably priced storage media with relative large per disk capacity. This tier is highly reliable and applicable to common online applications.
      • Capacity tier (NL-SAS): This tier provides the lowest performance and contains storage media of low prices with large per disk capacity. This tier is applicable to non-critical applications such as backup.
      • High-performance tier (SSD)

        RAID 1 (2D)

        2 GB

      • Performance tier (SAS)

        RAID 5 (4D+1P)

        6 GB

      • Capacity tier (NL-SAS)

        RAID 6 (4D+2P)

        12 GB

      Capacity alarm threshold (%)

      Alarms will be reported when the storage pool capacity usage exceeds the threshold.

      For example, if the storage pool capacity is 20 GB and the alarm threshold is 80%, an alarm will be reported when the used storage capacity exceeds 16 GB.

      80

      Data migration granularity

      Data dynamically flows in the form of data migration units across different storage tiers.

      The default value of 4 MB is recommended. The value cannot be changed after being set.

      If you want to adjust the data migration granularity in different application scenarios such as stream media and video surveillance, contact technical support engineers.

      4 MB

    1. Click Save.

      A message box is displayed.

    2. Click OK.
  • Creating a template for common LUN configuration
    1. Go to the common configuration page.
      1. On the menu bar, choose Resource > Storage Subnet.

      2. In the navigation tree, choose Storage Resources Allocation > Manage Common Configuration.
    2. Click Create.

      The common configuration page is displayed.

    3. Set common configuration parameters.
      Table 10-38 Common configuration parameters

      Parameter

      Description

      Example

      Basic Configuration

      Name

      Name of a common configuration.

      LUNCfgName

      Type

      Type of a common configuration.

      LUN configuration

      Description

      Description of a common configuration.

      S5800 LUN common configuration

      LUN name

      Name of a LUN.

      If multiple LUNs are created, a suffix is added to each LUN name to distinguish the names from each other, for example, LUN5800_0001.

      LUN5800

      Capacity

      Capacity of a LUN

      64 GB

      Thin

      After the thin function is enabled, the system allocates an initial capacity to a LUN, instead of allocating all LUN capacity at one time, and then dynamically adjusts the LUN capacity based on the capacity usage of hosts, achieving on-demand resource allocation.

      Initial capacity: 1 GB

      NOTE:

      Storage pool overcommitment ratio = Total capacity of all LUNs in a storage pool/Capacity of the storage pool

      The total capacity of all LUNs in a storage pool cannot be greater than the product of the capacity of the storage pool multiplied by the overcommitment ratio. Generally, the overcommitment ratio is not less than 1. The default value is 0.

      Initial capacity: 1 GB

      Number of LUNs

      Number of LUNs.

      8

      Total Capacity

      Total capacity of LUNs.

      512

      Advanced Configuration

      Initial capacity allocation policy

      Storage tier to which capacity is preferentially allocated.

      Automatic allocation

      Cache Policy

      Read policy: cache read policy.

      • Resident: Applies to randomly accessed services, ensuring that data can be cached if possible to improve the read hit ratio.
      • Default: Applies to regular services, striking a balance between the hit ratio and disk access performance.
      • Recycle: Applies to sequentially accessed services, releasing cache resources for other services as soon as possible.

      Write policy: cache write policy.

      • Resident: Applies to randomly accessed services, ensuring that data can be cached if possible to improve the write hit ratio.
      • Default: Applies to regular services, striking a balance between the hit ratio and disk access performance.
      • Recycle: Applies to sequentially accessed services, releasing cache resources for other services as soon as possible.

      Read policy: Default

      Write policy: Default

      Prefetch Policy

      Read mode of a LUN. When reading data, the storage system prefetched required data from hard disks to the cache in advance according to a preset policy.

      • No prefetch: The storage system reads data according to the prefetch length specified in the I/O request. As a low read hit ratio may lead to performance degradation, No prefetch is recommended for random read services.
      • Intelligent prefetch: Intelligent prefetch analyzes the continuity of the read requests from the host. If the read requests are continuous, the data following the current read request is prefetched from hard disks to the cache. In this way, the cache hit ratio can be increased. If data is randomly read, no prefetch is performed and the data is read from disks. This policy applies to a scenario where sequential reads and random reads coexist or a scenario where you cannot determine data reads to be sequential or random.
      • Constant prefetch: A constant length of data is read from disks every time the cache reads data from the disks. The length is user-definable, ranging from 0 to 1024. This policy applies to sequential read applications with fixed-size data, for example, color ring back tone (CRBT) and multi-user streaming media video on demand (VoD) initiated by users at the same bit rate.
      • Variable prefetch: A variable length of data is read from disks every time the cache reads data from disks. The length is a multiple of that specified in the host I/O request. The multiple is user-defined, ranging from 0 to 1024. This policy applies to sequential read applications with variable-size data or to multi-user concurrent read applications with an unknown data prefetch amount, for example, multi-user streaming media VoD initiated by users at different bit rates.

      Intelligent prefetch

    1. Click Save.

      A message box is displayed.

    2. Click OK.
  • Creating a template for common host mapping configuration
    1. Go to the common configuration page.
      1. On the menu bar, choose Resource > Storage Subnet.

      2. In the navigation tree, choose Storage Resources Allocation > Manage Common Configuration.
    2. Click Create.

      The common configuration page is displayed.

    3. Set common configuration parameters.
      Table 10-39 Common configuration parameters

      Parameter

      Description

      Example

      Name

      Name of a common configuration.

      HostCfgName

      Type

      Type of a common configuration.

      Mapping configuration

      Description

      Description of a common configuration.

      Common configuration of host mapping Host01

      Mapping Mode

      • Share: All hosts share mapped LUNs. It is recommended that the hosts be in one cluster.
      • Exclusive: Each host exclusively uses mapped LUNs.

      Share

      Number of LUNs

      Number of LUNs that you want to map.

      The entered number must be smaller than that of LUNs you have queried.

      5

      Capacity

      Capacity of LUNs that you want to query

      64 GB

      LUN type

      Type of LUNs that you want to query

      Thick LUN

      Performance

      Performance of LUNs that you want to query

      • Automatic: Automatically selects LUNs.
      • High: Selects a LUN from the high performance tier.
      • Medium: Selects a LUN from the performance tier.
      • Low: Selects a LUN from the capacity tier.

      Automatic

      Protocol type

      All the hosts of the selected protocol type will be queried.

      iSCSI

    1. Click Save.

      A message box is displayed.

    2. Click OK.
  • Creating a customized configuration script
    1. Go to the common configuration page.
      1. On the menu bar, choose Resource > Storage Subnet.

      2. In the navigation tree, choose Storage Resources Allocation > Manage Common Configuration.
    2. Click Create.

      The common configuration page is displayed.

    3. Set common configuration parameters.
    4. For details about the supported customized scripts and examples, see Customized Script Usage Guide.
      Table 10-40 Common configuration parameters

      Parameter

      Description

      Example

      Name

      Name of a common configuration.

      disk_domain

      Type

      Type of a common configuration.

      Customized script configuration

      Description

      Description of a common configuration.

      Create a disk domain configuration.

      Script

      Configuration script.

      create disk_domain name=domain1

    1. Click Save.

      A message box is displayed.

    2. Click OK.

----End

Viewing or Modifying or Deleting a Common Configuration Template

Describes how to view/modify/delete a common configuration template.

Context

You can view, modify, or delete a common configuration template based on the storage resource usage.

Procedure

  1. On the menu bar, choose Resource > Storage Subnet.

  2. In the navigation tree, choose Storage Resources Allocation > Manage Common Configuration.

    A list is displayed showing all common configuration template.

  3. You can query common configuration templates by name or type.
  4. You can click a configuration template name to view its details.

    For details about configuration parameters, see Creating a Common Configuration Template.

  5. You can click to modify the parameters of a common configuration template.

    For details about configuration parameters, see Creating a Common Configuration Template.

  6. You can click to delete a common configuration template or click Delete after selecting a configuration template.
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Updated: 2019-09-12

Document ID: EDOC1100044378

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