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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).
Manually Creating a RAID 60 Array

Manually Creating a RAID 60 Array

Scenarios

  • Data on a hard drive will be deleted after the hard drive is added to a RAID array. Before creating a RAID array, check that there is no data on hard drives or the data on hard drives is not required. If the hard disk data needs to be retained, back up the data first.
  • The LSI SAS2208 supports SAS/SATA HDDs and SSDs. Hard drives in one RAID array must be of the same type, but can have different capacities or be provided by different vendors.
  • RAID 0, 1, 5, 6, 10, 50, and 60 lists the number of hard drives required by each RAID level.

Process

Procedure

  1. Log in to the RAID controller card Configuration Utility. For details, see Logging In to the Configuration Utility.
  2. Select the manual configuration mode.

    1. On the main screen, click Configuration Wizard in the navigation tree.
      The Configuration Wizard screen is displayed, as shown in Figure 4-101.
      • Clear Configuration: clears all the existing RAID configuration.
      • New Configuration: clears the existing RAID configuration and creates a RAID array.
      • Add Configuration: adds new drives to the existing configuration. The procedure for adding drives is the same for New Configuration and Add Configuration. This option is not displayed if no hard drives are available for creating a RAID array.
      • If you select New Configuration, the existing data of the selected physical drives will be cleared. Exercise caution when performing this operation.
      • Add Configuration is recommended if you want to create a RAID array.
      Figure 4-101 Configuration Wizard
    2. Select Add Configuration and click Next.

      A confirm dialog box is displayed.

    3. Click Yes.

      The Select Configuration Method screen is displayed, as shown in Figure 4-102. For details about the parameter description, see Table 4-27.

      Figure 4-102 Select Configuration Method screen
      Table 4-27 Parameter description

      Parameter

      Description

      Manual Configuration

      Allows users to control and configure storage properties.

      Automatic Configuration

      Automatically creates an RAID array with optimal configuration.

      • Redundancy: specifies whether to enable the redundancy feature.
        • Redundancy when possible: automatically configures the existing hard drives as a RAID array with redundancy when possible.
          NOTE:

          If there are two hard drives, the system automatically configures RAID 1. If there are three or more hard drives, the system automatically configures RAID 5 or RAID 6. The system does not support automatic configuration of RAD 10, RAID 50, or RAID 60.

        • No Redundancy: automatically configures existing hard drives as a RAID 0 array, which is an array without redundancy.

          Default value: Redundancy when possible

      • Data Protection: specifies whether to enable data protection, which is an advanced function of RAID controller cards. The hard drives supporting data encryption use a unique key to encrypt data. If a hard drive is removed from the RAID controller card, data on the hard drive cannot be obtained without the key. This setting is valid only for hard drives supporting data encryption.
        • Disabled
        • Enabled

          Default value: Disabled

    4. Select Manual Configuration and click Next.

      The Drive Group Definition screen is displayed, as shown in Figure 4-103. For details about the parameter description, see Table 4-28.

      Figure 4-103 Drive Group Definition screen
      Table 4-28 Parameter description

      Parameter

      Description

      Data protection

      Data protection is an advanced function of RAID controller cards. The hard drives supporting data encryption use a unique key to encrypt data. If a hard drive is removed from the RAID controller card, data on the hard drive cannot be obtained without the key.

      • Disabled
      • Enabled

      Default value: Disabled

      NOTE:

      This setting is valid only for hard drives supporting data encryption.

  3. Add hard drives to the drive group.

    1. In the Drives pane on the left, select three hard drives to be added to Drive Group 0.
    2. Click Add To Array to add them to Drive Groups on the right, as shown in Figure 4-104.
      • Each drive group of a RAID 60 array supports 3 to 8 or 16 hard drives (depending on the RAID key specifications).
      • If the total number of hard drives in all RAID arrays under a RAID controller card exceeds 16 or 32 (depending on the RAID key specifications), no hard drive can be added to RAID arrays.
      • Use hard drives of the same specifications to create a RAID array. If an array has hard drives of different sizes, the capacity of the RAID array to be created will be affected and a warning will be displayed when you click Accept DG.
      • To release a selected hard drive, select the hard drive in Drive Groups and click Reclaim.
      Figure 4-104 Adding hard drives
    3. Click Accept DG. The screen shown in Figure 4-105 is displayed.
      Figure 4-105 Accepting a hard drive list
    4. Repeat 3.a to 3.c to create Drive Group 1, as shown in Figure 4-106.

      For details about the number of drive groups required for creating a RAID 60 array, see RAID 0, 1, 5, 6, 10, 50, and 60.

      Figure 4-106 Creating Drive Group 1
    5. Click Next.

      The Span Definition screen is displayed, as shown in Figure 4-107.

      Figure 4-107 Span Definition
    6. In the Array With Free Space area, select Drive Group:0 and click Add To SPAN, as shown in Figure 4-108.
      Disk group 0 is added to the Span pane in the right, as shown in Figure 4-109.
      Figure 4-108 Adding a drive group to the span list(1)
      Figure 4-109 Drive group added to the span list(2)
    7. Repeat 3.f for each drive group to be added.
      Figure 4-110 Drive groups added to the span list

  4. Set the RAID level.

    1. Click Next.

      The Virtual Drive Definition screen is displayed, as shown in Figure 4-111. For details about the parameter description, see Table 4-29.

      Figure 4-111 Virtual Drive Definition screen

      Table 4-29 Parameters on Virtual Drive Definition

      Parameter

      Description

      RAID Level

      RAID level.

      • RAID 0
      • RAID 1
      • RAID 5
      • RAID 6
      • RAID 10
      • RAID 50
      • RAID 60

      Strip Size

      Volume of hard drive data on each strip.

      • 8 KB
      • 16 KB
      • 32 KB
      • 64 KB
      • 128 KB
      • 256 KB
      • 512 KB
      • 1 MB

      Default value: 256 KB

      The default size is used during RAID configuration.

      Access Policy

      Data access policy.

      • RW: The virtual drive is readable and writable.
      • Read Only: The virtual drive is read-only.
      • Blocked: The virtual drive is blocked from access.

      Default value: RW

      Read Policy

      Options for reading data on a virtual drive.

      • No Read Ahead: disables the Read Ahead function.
      • Always Read Ahead: enables the Read Ahead function. The RAID controller card prefetches sequential data or data to be used and stores it in the cache.

      Default value: Always Read Ahead

      NOTE:

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

      Write Policy

      Write policy for data on a virtual drive.

      • Always Write Back: Once all data in the cache is received, the controller notifies the host that data transmission is complete.
      NOTE:

      In Always Write Back mode, DDR write data of the controller card will be lost if the supercapacitor is not installed or being charged. This mode is not recommended.

      • Write Through: Once the drive subsystem receives all data, the controller notifies the host that data transmission is complete.
      • Write Back with BBU The controller card automatically switches to the Write Through mode when the controller card has no Battery Backup Unit (BBU), the BBU is on charge or discharge, the BBU is faulty, or the controller card has Pinned/Preserved cache. It is recommended that you set the write policy to this mode.

      Default value: Write Through

      IO Policy

      Options for data I/O of 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 Always 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.

      Drive Cache

      Cache policy for physical hard drives.

      • Enable: writes data to the cache before writing data to the hard drive. This option improves data write performance, but data may be lost due to power failure without a power failure protection mechanism.
      • Disable: writes data to a hard drive without caching. Data is not lost in the event of power failure.
      • Unchanged: uses the current cache policy.

      Default value: Unchanged

      Disable BGI

      Specifies whether to disable background initialization (BGI).

      • No: enables background initialization. In this mode, the background automatically starts initializing virtual drives.
      • Yes: disables background initialization.

      Default value: No

      Select Size

      Size of a virtual drive. If multiple virtual drives need to be created in a drive group, the specified capacity must be smaller than the total capacity.

      NOTE:

      You can click Update Size to set the value of Select Size as the remaining drive space in the current RAID mode if any of the following conditions are met:

      • Only one virtual drive needs to be created for a drive group.
      • The virtual drive to be created is the last one for a drive group with multiple virtual drives.
    2. Select RAID 60 from RAID Level.
    3. Set other parameters on the Virtual Drive Definition screen.

  5. (Optional) Set the VD capacity in Select Size.

    If you do not need to configure multiple VDs, click Update Size. If you want to divide the drive group into multiple VDs, manually set the VD capacity.

  6. Click Accept.

    The VD 0 is created.

    For example, after you set the capacity of VD 0 to 0.5TB, VD 0 is displayed under Drive Group 0, as shown in Figure 4-112.

    Figure 4-112 Configuration result

  7. (Optional) Create multiple virtual drives.

    Each drive group supports a maximum of 16 virtual drives.

    1. On the screen shown in Figure 4-112, click Back.

      The Span Definition screen is displayed, as shown in Figure 4-113.

      Figure 4-113 Span Definition
    2. Click Add to SPAN.
    3. Click Next.
      The screen shown in Figure 4-114 is displayed.
      Figure 4-114 VD1 property configuration
    4. Repeat 4 to 6.

      Create multiple virtual drives based on service requirements. Figure 4-115 shows an example of three virtual drives.

      Figure 4-115 Creating multiple virtual drives
    5. On the screen shown in Figure 4-115, click Next.

      The configuration result is displayed, as shown in Figure 4-116.

      Figure 4-116 Configuration result
    6. Click Accept.

      A confirm dialog box is displayed.

    7. Click Yes.

      The dialog box shown in Figure 4-117 is displayed.

      Figure 4-117 Initialization information

      Initializing virtual drives will damage data on the virtual drives. If the original data on the hard drives needs to be retained, click No.

  8. Initialize virtual drives.

    1. Click Yes.

      RAID initialization starts.

      After the initialization is complete, Optimal is displayed in the Virtual Drives pane.

      Figure 4-118 Virtual drive status

  9. Check the configuration result.

    1. Click Home in the lower left corner.
      On the CU main screen displayed, information about the RAID array configured is displayed in the Logical View area, as shown in Figure 4-119.
      Figure 4-119 RAID manually configured

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Updated: 2019-11-01

Document ID: EDOC1000004186

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