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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 Level Migration

RAID Level Migration

LSI SAS3108 supports RAID level migration, which allows RAID configuration to be changed without affecting data integrity. For details, see Migrating the RAID Level.

LSI SAS3108 supports the following RAID level migration options:

  • Migrate RAID 0 to RAID 1, 5, or 6.
  • Migrate RAID 1 to RAID 0, 5, or 6.
  • Migrate RAID 5 to RAID 0 or 6.
  • Migrate RAID 6 to RAID 0 or 5.

Table 8-4 lists the minimum numbers of hard drives to be added for RAID level migration.

Table 8-4 Minimum numbers of hard drives to be added for RAID level migration

RAID Level Migration

Number of Existing Hard Drives

Minimum Total Hard Drives to Be Added

RAID 0 -> RAID 1

1

1

RAID 0 -> RAID 5

1

2

RAID 0 -> RAID 6

1

2

RAID 1 -> RAID 0

2

0

RAID 1 -> RAID 5

2

1

RAID 1 -> RAID 6

2

1

RAID 5 -> RAID 0

3

0

RAID 5 -> RAID 6

3

1

RAID 6 -> RAID 0

3

0

RAID 6 -> RAID 5

3

0

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Updated: 2019-11-01

Document ID: EDOC1000004186

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