SK0-003 · Question #587
Which of the following describes the difference between hardware and software RAID technologies?
The correct answer is B. Hardware RAID performs faster than software RAID. The primary difference in performance between hardware and software RAID technologies is that hardware RAID performs faster due to dedicated processing.
Question
Which of the following describes the difference between hardware and software RAID technologies?
Options
- ASoftware RAID offers more storage possibilities than hardware RAID.
- BHardware RAID performs faster than software RAID.
- CHardware RAID is less expensive than software RAID.
- DSoftware RAID volumes are compatible with any OS and hardware RAID volumes are not.
How the community answered
(30 responses)- B93% (28)
- C3% (1)
- D3% (1)
Why each option
The primary difference in performance between hardware and software RAID technologies is that hardware RAID performs faster due to dedicated processing.
Hardware RAID often supports a wider range of advanced RAID levels, features like hot spares, and larger capacities that software RAID implementations may not offer.
Hardware RAID utilizes a dedicated processor and memory on a RAID controller card to manage all RAID operations, which offloads the processing burden from the server's main CPU. This dedicated processing allows hardware RAID to achieve significantly higher I/O performance compared to software RAID, which relies on the host CPU for all RAID calculations.
Hardware RAID controllers are dedicated physical components with their own processors and memory, making them significantly more expensive than software RAID solutions which leverage existing server resources.
Hardware RAID presents the array as a single logical disk to the operating system, making it compatible with virtually any OS, whereas software RAID is OS-dependent and often tied to specific OS features.
Concept tested: Hardware vs. Software RAID performance
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