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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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Managing the RAID Controller Card Through the iBMC

Managing the RAID Controller Card Through the iBMC

iBMC 2.32 and later versions provide out-of-band management of RAID arrays. You can use the iBMC WebUI or CLI to perform basic query and configuration operations on the LSI SAS3008 or LSI SAS3108 controller card.

Logging In to the iBMC WebUI

  1. Connect a PC to the iBMC management network port of the server.
  2. Set the IP address of the PC so that the PC can communicate with the iBMC management network port.
  3. Log in to the iBMC WebUI from the PC.

Querying RAID Information

  1. In the navigation tree, choose Information > System Info.
  2. Click the Storage tab.

    The page shown in Figure A-18 is displayed.

    Figure A-18 Storage tab page

  3. In the storage list on the left, click a RAID controller card, hard disk, or logical disk to display basic information about the selected item.

Modifying RAID Controller Card Properties

  1. Click the Configure tab.

    The RAID controller configuration page is displayed.

  2. Select the RAID controller card to be managed.
  3. Click next to RAID Controller.

    The RAID controller setting area shown in Figure A-19 is displayed. Table A-1 describes the parameters.

    Figure A-19 Modifying RAID controller card properties
    Table A-1 Parameter description

    Parameter

    Description

    Copyback State

    If a member drive of a RAID array with redundancy becomes faulty, the hot spare drive automatically replaces the failed drive and starts data synchronization. After a new data drive is installed to replace the faulty one, data is copied from the hot spare drive to the new data drive. As the data copyback is complete, the hot spare drive restores its hot spare state.

    Copyback on SMART error State

    When a SMART error is detected, data copyback will be performed.

    JBOD State

    The RAID controller allows transparent command transmission of connected hard drives. If no logical drives are configured, user commands can be directly and transparently transmitted to the hard drives. This feature allows the upper-layer service or management software to access and control the physical drives.

  4. Set the parameters and click Save.

Creating a Logical Drive

  1. Select the RAID controller card to be managed.
  2. Click next to Logical Drive.

    The logical drive configuration page is displayed.

  3. Click the option button before Create.

    The logical drive setting area shown in Figure A-20 is displayed. Table A-2 describes the parameters.

    Figure A-20 Creating a logical drive
    Table A-2 Parameter description

    Parameter

    Description

    Name

    Identifies a logical drive.

    Secondary Cache

    Specifies whether to enable CacheCade.

    Strip Size

    Specifies the size of a data strip on each physical drive.

    Read Policy

    Specifies the data read policy of the logical drive. The options are as follows:

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

    Write Policy

    Specifies the data write policy of the logical drive. The options are as follows:

    • Write Through: Once the drive subsystem receives all data, the controller card notifies the host that data transmission is complete.
    • Write Back with BBU: When the BBU is not configured or configured but faulty, the controller card automatically switches to the Write Through mode.
    • Write Back: Once all data in the cache is received, the controller card notifies the host that data transmission is complete.

    IO Policy

    Specifies the input/output (I/O) policy for reading data from special logical drives. This policy does not affect the pre-reading cache. The options are as follows:

    • Cached IO: All the read and write requests are processed by the cache of the RAID controller. Select this value only when CacheCade 1.1 is configured.
    • Direct IO: This value has different meanings in read and write scenarios.
      • In read scenarios, data is directly read from physical drives. (If Read Policy is set to Read Ahead, data read requests are processed by the cache of the RAID controller.)
      • In write scenarios, data write requests are processed by the cache of the RAID controller. (If Wrote Policy is set to Write Through, data is directly written to physical drives.)

    Disk Cache Status

    The disk cache status can be any of the following:

    • 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 the data. Data is not lost if power failures occur.
    • Disk's default: uses the default cache policy.

    Access Policy

    Specifies the access policy for the logical drive. The options are as follows:

    • Read/Write: Read and write operations are allowed.
    • Read Only: The logical drive is read-only.
    • Blocked: Access to the logical drive is denied.

    Init State

    Specifies whether to initialize the logical drive created. The options are as follows:

    • No Init: Initialization is not performed.
    • Quick Init: Write zeros for the first 100 MB of the logical drive. Then, the logical drive status changes to Optimal.
    • Full Init: Initialize the logical drive. Before the initialization is complete, the logical drive status is initialization.

    Level

    Specifies the RAID level of the logical drive.

    Number of drives per span

    Set this parameter when the RAID level is 10, 50, or 60.

    Disk

    Specifies the disks to be added to the logical drive.

    Capacity

    Specifies the capacity of the logical drive.

  4. Set the parameters and click Save.

Removing Logical Drives

  1. On the System Info page, click the Storage tab.
  2. Click the Configure tab.

    The RAID controller configuration page is displayed.

  3. Select the RAID controller card to be managed.
  4. Click next to Logical Drive.

    The logical drive configuration page is displayed.

  5. Click the option button before Delete.

    The logical drive setting area shown in Figure A-21 is displayed.

    Figure A-21 Removing logical drives

  6. Select the logical drives to be deleted and click Save.

Modifying Logical Drive Properties

  1. Select the RAID controller card to be managed.
  2. Click next to Logical Drive.

    The logical drive configuration page is displayed.

  3. Click the option button before Modify.

    The logical drive setting area shown in Figure A-22 is displayed. Table A-3 describes the parameters.

    Modifying logical drive properties#appendix_003_2_mmccppss_fig_05

    Figure A-22 Modifying logical drive properties
    Table A-3 Parameter description

    Parameter

    Description

    Name

    Identifies a logical drive.

    Read Policy

    Specifies the data read policy of the logical drive. The options are as follows:

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

    Write Policy

    Specifies the data write policy of the logical drive. The options are as follows:

    • Write Through: Once the drive subsystem receives all data, the controller card notifies the host that data transmission is complete.
    • Write Back with BBU: When the BBU is not configured or configured but faulty, the controller card automatically switches to the Write Through mode.
    • Write Back: Once all data in the cache is received, the controller card notifies the host that data transmission is complete.

    IO Policy

    Specifies the input/output (I/O) policy for reading data from special logical drives. This policy does not affect the pre-reading cache. The options are as follows:

    • Cached IO: All the read and write requests are processed by the cache of the RAID controller. Select this value only when CacheCade 1.1 is configured.
    • Direct IO: This value has different meanings in read and write scenarios.
      • In read scenarios, data is directly read from physical drives. (If Read Policy is set to Read Ahead, data read requests are processed by the cache of the RAID controller.)
      • In write scenarios, data write requests are processed by the cache of the RAID controller. (If Wrote Policy is set to Write Through, data is directly written to physical drives.)

    Disk Cache Status

    The disk cache status can be any of the following:

    • 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 the data. Data is not lost if power failures occur.
    • Disk's default: uses the default cache policy.

    Access Policy

    Specifies the access policy for the logical drive. The options are as follows:

    • Read/Write: Read and write operations are allowed.
    • Read Only: The logical drive is read-only.
    • Blocked: Access to the logical drive is denied.

    BGI Status

    Specifies whether to enable background initialization.

    SSCD Caching

    Specifies whether to use CacheCade drive as the cache.

    Boot Disk

    Specifies whether the logical drive is the boot drive.

  4. Select the logical drive to be modified.
  5. Set the parameters and click Save.

Modifying Member Drive Properties

  1. Select the RAID controller card to be managed.
  2. Click next to Physical Drive.

    The physical drive setting area shown in Figure A-23 is displayed. Table A-4 describes the parameters.

    Figure A-23 Modifying physical drive properties
    Table A-4 Parameter description

    Parameter

    Description

    Hot Spare State

    Specifies the hot spare status of the physical drive. The options are as follows:

    • None: The drive is not a hot spare disk.
    • Global: Set this drive as a global hot spare disk.
    • Dedicated: Set this drive as a dedicated hot spare disk.

    Firmware State

    Specifies the status of the physical drive. The options are as follows:

    • UNCONFIGURED: unavailable
    • ONLINE: online
    • OFFLINE: offline
    • GOOD: idle
    • JBOD: directly managed by the OS

    Location State

    Specifies whether the locating indicator is lit for the drive.

  3. Select the member disk to be modified.
  4. Set the parameters and click Save.
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Updated: 2019-11-01

Document ID: EDOC1000004186

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