RAID Controllers and Definitions

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Vocabulary flashcards covering key concepts related to RAID controllers and their functionalities.

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9 Terms

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RAID

Redundant Array of Inexpensive Disks or Redundant Array of Independent Disks.

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RAID configuration

Stores a second copy of all data across several hard disks for safekeeping.

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RAID controller

Manages the RAID array and provides an extra layer of protection and performance.

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Logical units

Groups of disks presented to applications by the RAID controller.

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Hardware RAID

A RAID configuration that uses a physical controller to manage the array.

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Software RAID

A RAID configuration that utilizes the host's hardware resources like CPU and DRAM.

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Performance comparison of RAID controllers

Software RAID provides about half the performance of hardware RAID.

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Advantages of software RAID

More flexible and affordable compared to hardware RAID.

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Disadvantage of software RAID

Requires a powerful host system's processor to maintain application performance.