Which of the following best describes a Fake RAID?
a. Software RAID
b. Hardware RAID
c. Software RAID assisted by BIOS
d. Hardware RAID assisted by BIOS
The correct answer and explanation is:
Correct Answer: c. Software RAID assisted by BIOS
Explanation:
Fake RAID, also called BIOS-assisted RAID or firmware RAID, is software RAID assisted by BIOS, making option c the correct answer.
Let’s break it down:
What is RAID?
RAID stands for Redundant Array of Independent Disks. It is a technology that combines multiple hard drives into one logical unit for redundancy, performance, or both.
There are two main categories:
- Hardware RAID – Uses a dedicated controller card with its own processor and memory.
- Software RAID – Managed by the operating system without special hardware.
What is Fake RAID?
Fake RAID is a hybrid approach where:
- The BIOS or UEFI firmware on the motherboard provides basic RAID functionality during system boot.
- Once the operating system loads, a software driver takes over to manage the RAID array.
This means it’s not truly hardware RAID (which has its own processor and memory), but also not purely software RAID (which runs entirely in the OS without BIOS support).
Why is it called “Fake”?
The term “fake” comes from the fact that:
- It pretends to be hardware RAID by offering configuration through BIOS.
- But it relies on CPU resources and drivers, like software RAID, once the system boots.
This setup can cause driver compatibility issues and slower performance, especially under heavy load, compared to true hardware RAID.
Summary:
- Hardware RAID (b or d) uses a dedicated controller card.
- Software RAID (a) is managed entirely by the OS.
- Fake RAID (c) is Software RAID assisted by BIOS — configuration via BIOS, execution via software.
Thus, the best description of Fake RAID is:
✅ c. Software RAID assisted by BIOS.