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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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Drive Group and Virtual Drive

Drive Group and Virtual Drive

With the increasing traffic volume of modern data centers, more data needs to run on a single server. When a single drive is insufficient to support system services in terms of capacity and security, multiple drives need to be combined to serve as a visible drive for external entities to meet service requirements. A drive group is a group of physical drives combined as a whole for external entities. Drive groups are the basis for virtual drives.

A virtual drive is a continuous data storage unit divided from a drive group. A virtual drive can be considered an independent drive. Thanks to certain configuration, a virtual drive can provide higher capacity, security, and data redundancy than a physical drive.

A virtual drive can be:

  • A complete drive group.
  • Multiple complete drive groups.
  • Part of a drive group.
  • Parts of multiple drive groups (a part is divided from every drive group, and these parts form a virtual drive).

Related conventions:

  • A drive group is usually specified as Drive Group (DG for short).
  • A virtual drive is usually specified as Virtual Drive, Virtual Disk (VD for short), Volume, Array, and Logical Device (LD for short).
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Updated: 2019-11-01

Document ID: EDOC1000004186

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