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Huawei V2 and V3 Server RAID Controller Card User Guide 36

This document describes the appearances and features of the redundant array of independent disks (RAID) controller cards, how to configure properties for the RAID controller cards, and how to install drivers. The RAID controller cards include the LSI SAS2208, LSI SAS2308, LSI SAS3008, LSI SAS3108, LSI SoftRAID, PM8060, and PM8068.
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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).
Configuration Management

Configuration Management

This screen allows you to configure and manage virtual drives, drive groups, and external configuration, and delete configuration.

Screen Description

Figure 4-280 shows the Configuration Management screen. Table 4-82 describes the parameters on the screen.

Figure 4-280 Configuration Management
Table 4-82 Parameter description

Parameter

Description

Create Virtual Drive

Creates a RAID array.

Create Profile Based Virtual Drive

Creates a RAID array quickly. The RAID properties are automatically configured.

View Drive Group Properties

Views drive group properties.

Clear Configuration

Clears all RAID configuration.

Manage Foreign Configuration

Manages foreign configuration.

Deleting RAID Configuration

  1. Select Clear Configuration and press Enter.

    A confirmation screen is displayed.

  2. Select Confirm and press Enter.
  3. Select Enabled and press Enter.
  4. Select Yes and press Enter.

    The message "The operation has been performed successfully" is displayed.

  5. Press Enter.

    The configuration is complete.

Create Virtual Drive

This screen allows you to create a RAID array.

Screen Description

The Create Virtual Drive screen is shown in Figure 4-281. Table 4-83 describes the parameters on the screen.

Figure 4-281 Create Virtual Drive
Table 4-83 Parameter description

Parameter

Description

Select RAID Level

Selects a RAID level.

Protect Virtual Drive

Status of virtual drive data protection.

Select Drives From

Source of member drives of the virtual drive:

  • Unconfigured Capacity: Idle drives that are not added to any virtual drives.
  • Free Capacity: Remaining space of the virtual drive.

Select Drives

Selects member drives.

Virtual Drive Name

Name of the virtual drive.

Virtual Drive Size

Capacity of the virtual drive. The default value is the current largest capacity supported.

Virtual Drive Size Unit

Unit of capacity.

Strip Size

Strip size of the virtual drive. Options include 64 KB, 128 KB, 256 KB, 512 KB, and 1 MB. The default value is 256 KB.

The default size is used during RAID configuration.

Read Policy

Options for reading data on a virtual drive.

  • No Read Ahead: disables the Read Ahead function.
  • Read Ahead: enables the Read Ahead function. The controller pre-reads sequential data or the data predicted to be used and saves it in the cache.

    Default value: Read Ahead

NOTE:

To achieve optimal disk performance, set the policy to Read Ahead for HDDs and No Read Ahead for SSDs.

Write Policy

Default cache write policy of the RAID array.

The values of this parameter vary depending on the firmware version.

  • If the firmware version of the LSI SAS2208 is 3.460.165-8277, the cache write policies are as follows:
    • Write Through: Once the drive subsystem receives all data, the controller notifies the host that data transmission is complete.
    • Write Back: If the supercapacitor is not configured or the supercapacitor is faulty, the RAID controller card automatically switches to the Write Through mode.
    • Always Write Back: Once the cache receives all data, the controller notifies the host that data transmission is complete.
  • If the firmware version of the LSI SAS2208 is 3.400.95-4061, the cache write policies are as follows:
    • Write Through: Once the drive subsystem receives all data, the controller notifies the host that data transmission is complete.
    • Write Back: If the supercapacitor is not configured or the supercapacitor is faulty, the RAID controller card automatically switches to the Write Through mode.
    • Force Write Back: Once the cache receives all data, the controller notifies the host that data transmission is complete.
    Default value: Write Back
    NOTE:
    If this parameter is set to Write Back,, the current write cache policy will automatically change to Write Through when:
    • The RAID controller card does not have a supercapacitor.
    • The supercapacitor is being charged and discharged.
    • The supercapacitor is damaged.
    • Pinned or preserved cache exists.

    If this parameter is set to Always Write Back or Force Write Back, the DDR write data of the RAID controller card will be lost when:

    • The server is powered off unexpectedly.
    • The supercapacitor is not installed.
    • The supercapacior is being charged.

    This mode is not recommended.

I/O Policy

Options for reading data from special virtual drives. This policy does not affect cache prefetch.

  • Direct:
    • Read scenarios: Data is directly read from hard drives. (If Read Policy is set to Read Ahead, data is read from the cache.)
    • Write scenarios: Data is written to the RAID cache. (If Write Policy is set to Write Through, data is directly written into hard drives.)
  • Cached: Data is read from or written to the cache. Use this option only when configuring CacheCade 1.1.

Default value: Direct

NOTE:

The LSI SAS2208 does not support the CacheCade function.

Access Policy

Data access policy.

  • Read/Write: Read and write operations are allowed.
  • Read Only: The virtual drive is read-only.
  • Blocked: The virtual drive is blocked from access.

Default value: Read/Write

Drive Cache

Physical hard drive cache policy.

  • Unchanged: uses the current cache policy.
  • Enable: writes data to the cache before writing data to the hard drive. This option improves data write performance. However, data will be lost if there is no protection mechanism against power failures.
  • Disable: writes data to a hard drive without caching. Data is not lost in the event of power failure.

Default value: Unchanged

Disable Background Initialization

Enables or disables background initialization.

Default Initialization

Default initialization mode.

  • No: Initialization is not performed.
  • Fast: Fast initialization.
  • Full: Full initialization.

Emulation Type

Sets the sector size reported to the OS.

If the member drive is 512B/512B:

  • Default: The logical drive sector is 512B/512B.
  • None: The logical drive sector is 512B/512B.
  • Force: The logical drive sector is 512B/4KB.

If the member drive is 512B/4KB:

  • Default: The logical drive sector is 512B/4KB.
  • None: The logical drive sector is 512B/512B.
  • Force: The logical drive sector is 512B/4KB.

Save Configuration

Save the settings.

Creating a Virtual Drive

  1. Select a RAID level.

    1. Use the and arrow keys to select a RAID level and press Enter.
    2. Select a RAID level and press Enter.

  2. Add member drives.

    1. Use the and arrow keys to select Select Drives From and press Enter.
    2. Select the source of member drives and press Enter.

      In this example, Unconfigured Capacity is selected.

      The screen for adding member drives is displayed, as shown in Figure 4-282. Table 4-84 describes the parameters on the screen.

      Figure 4-282 Adding member drives
      Table 4-84 Parameter description

      Parameter

      Description

      Select Media Type

      Hard drive media type.

      Select Interface Type

      Hard drive port type.

      Logical Sector Size

      Partition size.

      Check All

      Selects all hard drives.

      Uncheck All

      Deselects all hard drives.

      Apply Changes

      Saves settings.

    3. Set parameters as required.
    4. Select the drive to be added and press Enter.
    5. Select Enable and press Enter to select the drive.
    6. Select Apply Changes and press Enter.
    7. The message "The operation has been performed successfully" is displayed.
    8. Select OK and press Enter.

  3. Set the virtual drive properties.

    1. Set other properties of the virtual drive by referring to Table 4-83.

  4. Save the settings.

    1. Select Save Configuration and press Enter.

      A confirmation screen is displayed.

    2. Select Confirm and press Enter.
    3. Select Enable and press Enter.
    4. Select Yes and press Enter.

      The message "The operation has been performed successfully" is displayed.

    5. Select OK and press Enter.

Create Profile Based Virtual Drive

This screen allows you to create a RAID array quickly.

Screen Description

Figure 4-283 shows the Create Profile Based Virtual Drive screen. Table 4-85 describes the parameters on the screen.

Figure 4-283 Create Profile Based Virtual Drive
Table 4-85 Parameter description

Parameter

Description

Generic RAID 0

Quickly creates RAID 0, which provides high data throughput in big data transmission scenarios that have no data redundancy requirements.

Generic RAID 1

Quickly creates RAID 1, which can be used in scenarios, such as OS installation, which use data redundancy to secure data.

Generic RAID 5

Quickly creates RAID 5, which can be used in scenarios that have requirements on data redundancy and data throughput.

Generic RAID 6

Quickly creates RAID 6, which uses level-2 verification codes to ensure data redundancy and is used in scenarios similar to those for RAID 5.

Quickly Creating a RAID Array

  1. Use the and arrow keys to select a RAID level and press Enter. In this example, Generic RAID 5 is selected.

    The RAID array configuration screen is displayed, as shown in Figure 4-284. Table 4-86 describes the parameters on the screen.

    Figure 4-284 RAID configuration screen
    Table 4-86 Parameter description

    Parameter

    Description

    Drive Selection Criteria

    Member drives that can be automatically selected by the system.

    Virtual Drive Name

    RAID array name defined by the system.

    RAID Level

    RAID level of the RAID array.

    Virtual Drive Size

    Capacity of the RAID array.

    Power Save Mode

    Power failure protection mode.

    Strip Size

    Sector size of the RAID array.

    Read Policy

    Read policy of the RAID array.

    Write Policy

    Write policy of the RAID array.

    IO Policy

    I/O policy of the RAID array.

    Access Policy

    Read/Write policy.

    Drive Cache

    Hard drive cache policy.

    Default Initialization

    Default initialization mode of the RAID array.

    Create Dedicated Hot Spare

    Option to create dedicated hot spare drives for the RAID array.

  2. View or configure parameters by referring to Table 4-86.
  3. Select Save Configuration and press Enter.

    The operation success message is displayed.

  4. Press Enter.

View Drive Group Properties

This screen allows you to view drive group properties.

Screen Description

Figure 4-285 shows the View Drive Group Properties screen. Table 4-87 describes the parameters on the screen.

Figure 4-285 View Drive Group Properties
Table 4-87 Parameter description

Parameter

Description

Drive Group

Name of the drive group

Capacity Allocation

Capacity of the drive group. Names, RAID levels, capacities, and status of the virtual drives in the drive group are also included.

Protected

Status of drive group data protection

Manage Foreign Configuration

This screen allows you to view, import, and delete foreign configuration.

Screen Description

Figure 4-286 shows the Manage Foreign Configuration screen.

Figure 4-286 Manage Foreign Configuration

Viewing and Importing Foreign Configurations

  1. On the Manage Foreign Configuration screen, select Preview Foreign Configuration and press Enter.

    The existing foreign configuration is displayed.

    Figure 4-287 Foreign configuration

  2. Select Import Foreign Configuration and press Enter.

    A confirmation screen is displayed.

  3. Select Confirm and press Enter.
  4. Select Enable and press Enter.
  5. Select Yes and press Enter.

    The message "The operation has been performed successfully" is displayed.

  6. Select OK and press Enter.

Deleting Foreign Configuration

  1. On the Manage Foreign Configuration screen, select Clear Foreign Configuration and press Enter.

    A confirmation screen is displayed.

  2. Select Confirm and press Enter.
  3. Select Enable and press Enter.
  4. Select Yes and press Enter.

    The message "The operation has been performed successfully" is displayed.

  5. Select OK and press Enter.
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Updated: 2019-11-01

Document ID: EDOC1000004186

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