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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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Expanding Array Capacity

Expanding Array Capacity

Scenarios

When the PM8060 is in Legacy or Dual mode, array capacity cannot be expanded on the management screen.

The capacity of a RAID array can be expanded using either of the following methods:

  • Adding hard drives: Adds new hard drives to an existing array for capacity expansion.
  • Increasing available array space: Increases the percentage of available space of an array for capacity expansion if the capacity of all member drives in the array is not fully utilized.

Impact on the System

If a hard drive fails when you add hard drives to an array for capacity expansion, the array will become offline and data cannot be recovered. Perform this operation with caution.

Prerequisites

Conditions

The following conditions must be met before you add a hard drive for array capacity expansion:

  • The server has hard drives that have not been added to an array.
  • You have downloaded and installed the arcconf tool on the operating system.

The following conditions must be met before you Increase available array space for capacity expansion:

  • Member hard drives of the array have available space.
  • You have downloaded and installed the arcconf tool on the operating system.

Data

Data preparation is not required for this operation.

Tools

The array capacity must be expanded by using the official Adaptec ARCCONF Command Line Utility (arcconf tool for short) released by the PMC and installed on the operating system.

Procedure

  • Add hard drives.
    1. Open the arcconf tool in the operating system.
    2. Run the following command:

      Syntax: arcconf modify controller_ID from RAID_ID to stripesize stripsizevalue capacity RAID_level channel id1 device id1 ... channel idN device idN

      Parameters in the command are described as follows:

  • controller ID: indicates the controller ID.
  • RAID_ID: indicates the ID of the array whose capacity is to be expanded.
  • stripsizevalue: indicates the strip size.
  • capacity: indicates the capacity after the expansion.
  • RAID_level: indicates the RAID level after the expansion.
  • channel id: indicates the channel ID of the hard drive to be added. The default value is 0.
  • device id: indicates the slot ID of the hard drive to be added.

    For example:

    ./arcconf modify 1 from 1 to stripesize 64 10240 5 0 1 0 2 0 3
  • Increase available array space.
    1. Open the arcconf tool in the operating system.
    2. Run the following command:

      Syntax: arcconf modify controller_ID from RAID_ID to capacity RAID_level channel id1 device id1 ... channel idN device idN

      Parameters in the command are described as follows:

  • controller ID: indicates the controller ID.
  • RAID_ID: indicates the ID of the array whose capacity is to be expanded.
  • capacity: indicates the capacity after the expansion.
  • RAID_level: indicates the RAID level after the expansion.
  • channel id: indicates the channel ID of the current member drive. The default value is 0.
  • device id: indicates the slot ID of the current member drive.

    For example:

    ./arcconf modify 1 from 1 to 10240 5 0 1 0 2 0 3
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Updated: 2019-11-01

Document ID: EDOC1000004186

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