SK0-003 · Question #542
A server consists of two 72GB SCSI drives and four 146GB SCSI drives. All drives are attached to a RAID controller. The system's administrator has decided to mirror two drives for the operating…
The correct answer is C. 584GB. To maximize data space, the two 72GB drives are mirrored for the OS, leaving four 146GB drives for a RAID 0 data array.
Question
A server consists of two 72GB SCSI drives and four 146GB SCSI drives. All drives are attached to a RAID controller. The system's administrator has decided to mirror two drives for the operating system. Which of the following is the maximum space the administrator will have remaining to use for data when using RAID 0?
Options
- A292GB
- B438GB
- C584GB
- D728GB
How the community answered
(38 responses)- A8% (3)
- B3% (1)
- C79% (30)
- D11% (4)
Why each option
To maximize data space, the two 72GB drives are mirrored for the OS, leaving four 146GB drives for a RAID 0 data array.
292GB would be the result if only two of the 146GB drives were used in RAID 0 for data.
438GB would be the result if three of the 146GB drives were used in RAID 0 for data.
The administrator mirrors two drives for the operating system, which would typically be the two 72GB drives using RAID 1, leaving 72GB for the OS and the four 146GB drives for data. When these four 146GB drives are configured in RAID 0, their capacities are summed, resulting in 4 multiplied by 146GB, which equals 584GB of usable data space.
728GB is the total raw capacity of all drives if configured in a single RAID 0 array, which doesn't account for the OS mirroring or separate arrays.
Concept tested: RAID 0 and RAID 1 capacity calculation
Source: https://learn.microsoft.com/windows-server/administration/windows-storage-server/raid-levels
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