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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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Patrol Read

Patrol Read

Patrol read protects data integrity by detecting and rectifying physical drive failures before they cause data damage. Preventive maintenance scans and resolves potential problems of configured physical drives.

The resources for patrol read are adjustable to pending I/O operations. In other words, the system prioritizes I/O operations when the workload is high by allocating fewer resources to patrol read.

Patrol read cannot be performed on a drive undergoing:

  • RAID hot spare drive recovery
  • Dynamic drive expansion
  • Full or background initialization
  • Consistency check
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Updated: 2019-11-01

Document ID: EDOC1000004186

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