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).
Fault Tolerance Capabilities

Fault Tolerance Capabilities

RAID 0: RAID 0 does not provide the fault tolerance function. The failure of any member drive will cause data loss. Data is written into multiple member drives through striping. RAID 0 is ideal for scenarios that demand high performance without fault tolerance.

RAID 1: RAID 1 provides 100% data redundancy. When a member drive fails, data on a corresponding drive in the same RAID array can be used to run the system and rebuild the failed drive. In RAID 1, data on a member drive is also completely written into another drive, and therefore, the failure of one member drive does not cause data loss. Member drives in a pair always contain the same data. RAID 1 is ideal for scenarios that demand the maximum fault tolerance capability but minimum capacity requirements.

RAID 5: RAID 5 combines distributed parity check and drive striping. With parity check, the RAID array provides redundancy for one drive without the need to back up all data on the drive. When a member drive fails, the RAID controller card uses parity check data to rebuild all lost data. RAID 5 provides sufficient fault tolerance capability using a small amount of system overhead.

RAID 6: RAID 6 combines distributed parity check and drive striping. With parity check, the RAID array provides redundancy for two drives without the need to back up data on all drives. When a member drive fails, the RAID controller card uses parity check data to rebuild all lost data. RAID 6 provides sufficient fault tolerance capability using a small amount of system overhead.

RAID 10: RAID 10 uses multiple RAID 1 arrays to provide comprehensive data redundancy capabilities. RAID 10 is applicable to all scenarios that require 100% redundancy based on mirror drive groups.

RAID 50: RAID 50 provides data redundancy based on the distributed parity check of multiple RAID 5 arrays. Each RAID 5 array allows one failed member drive, if data integrity is ensured.

RAID 60: RAID 60 provides data redundancy based on the distributed parity check of multiple RAID 6 arrays. Each RAID 6 array allows two failed member drives, if data integrity is ensured.

Translation
Download
Updated: 2019-11-01

Document ID: EDOC1000004186

Views: 745303

Downloads: 20659

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