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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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RAID 0, 1, 5, 6, 10, 50, and 60

RAID 0, 1, 5, 6, 10, 50, and 60

The controller card supports up to:

  • 16 or 32 hard drives (The LSI SAS2208 supports two types of RAID keys, which support 16 and 32 hard drives respectively).

    The hard drives supported include the number of hot spare drives, idle drives (drives in Unconfigured Good state), and the number of drives in RAID arrays.

  • 64 virtual drives, specified by Virtual Drive on the Configuration Utility.
  • 32 drive groups, specified by Drive Group on the Configuration Utility. Each drive group holds up to 32 hard drives and can be divided into up to 16 or 32 virtual drives and 16 virtual drives (specified by Virtual Drive).

Table 4-3 lists the supported RAID levels and quantity of hard drives.

Table 4-3 RAID levels supported by hard drive quantity

RAID Level

Total Hard Drives

Spans

Total Hard Drives per Span

Maximum Failed Drives

RAID 0

1 to 32

N/A

N/A

0

RAID 1

Even numbers from 2 to 32

Number of spans

RAID 5

3 to 32

1

RAID 6

3 to 32

2

RAID 10

32 and even numbers from 4 to 16

2 to 8 RAID 1

16 and even numbers from 2 to 8

Number of spans

RAID 50

6 to 16/32

2 to 8 RAID 5

3 to 8/16

Number of spans

RAID 60

6 to 16/32

2 to 8 RAID 6

3 to 8/16

Total spans x 2

  • The failed hard drives cannot be adjacent. For details, see RAID Levels.
  • A RAID array consists of multiple spans. For example, a RAID 50 array consists of two RAID 5 spans.
  • Each span of a RAID 10 or 50 array allows for only one failed drive.
  • Each span of a RAID 60 array allows for a maximum of two failed drives.
  • The number of hard drives supported by RAID 10, 50, and 60 varies depending on the configured key type.
  • On a Windows hard drive management screen, Bus Type of virtual drives for the LSI SAS2208 is RAID.
  • The number of hard drives in RAID 10, 50, and 60 is determined by the number of spans and the number of hard drives supported by each span.
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Updated: 2019-11-01

Document ID: EDOC1000004186

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