No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

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.
Rate and give feedback:
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).
Migrating the RAID Level

Migrating the RAID Level

Scenarios

RAID level migration is a process of converting one RAID configuration to another. RAID controller cards support RAID level migration as the data volume and number of hard drives increase in the system.

You can perform RAID level migration on the Configuration Utility. Typically, an array is reconfigured with the same or more storage capacity. Sometimes, additional drives are added.

Impact on the System

If a hard drive fault occurs during RAID level migration, the following will occur:

  • If a faulty hard drive exists and the RAID array does not contain redundant data (for example, a faulty hard drive exists during RAID 0 level migration), the RAID array fails.
  • If a faulty hard drive exists and the RAID array still contains redundant data (for example, a faulty hard drive exists during RAID 1 level migration), the migration continues. When the migration is complete, replace the faulty hard drive and rebuild the RAID array.

Perform RAID level migration with caution.

Prerequisites

Conditions

The following conditions must be met before you migrate a RAID level:

  • You have logged in to the server through a remote virtual console and can manage the server on a real-time basis.
  • The current number of hard drives meets the requirements of the target RAID level.
  • You have accessed the Configuration Utility main screen. For details, see Logging In to the Configuration Utility.

LSI SAS2208 controller cards support the following RAID level migration modes:

  • 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.
  • If a RAID array contains two or more VDs, it does not support RAID level migration.

Table 4-46 lists the minimum numbers of hard drives to be added for RAID level migration.

Table 4-46 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

Data

You have backed up data on hard drives.

Procedure

  1. On the left of the Configuration Utility main screen, select Virtual Drives.

    The virtual drive selection screen is displayed.

    Figure 4-162 Virtual drive selection screen
  2. Select Properties and click Go.

    The virtual drive property screen is displayed.

    Figure 4-163 Virtual drive properties
  3. Select Adv Opers under Operations, and click Go.

    The capacity expansion screen is displayed.

    Figure 4-164 Adding hard drives to a RAID array
  4. Select a method for RAID level migration and click Go.
    • To perform RAID level migration without adding hard drives, select Change RAID Level and choose the target RAID level from the drop-down list box below.
    • To perform RAID level migration with hard drives added, select Change RAID Level and Add Drive and choose hard drives from the area below and the target RAID level from the drop-down list box above.
  5. Click Home to go back to the Configuration Utility main screen.
  6. On the right of the Configuration Utility main screen, view the RAID configuration and check the RAID level migration result.

    The duration required for RAID level migration varies depending on the data volume in the RAID array. Wait for a moment if the data volume is large.

Translation
Download
Updated: 2019-11-01

Document ID: EDOC1000004186

Views: 756025

Downloads: 20680

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next