A technician needs to configure a new server with multiple drives. The technician was instructed to make the OS RAID 1. The two drives the technician is using are from different manufacturers, but both are 1TB drives. However, one drive is 953,980MB, and the other is 953,740MB, a difference of 240MB. When attempting to create the RAID 1, the option is grayed out. Which of the following is the MOST likely cause of the issue?

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A. Mismatched drives are not recommended when creating RAID 1. Even though both drives are marketed as 1TB, manufacturers format drives differently, resulting in slightly different actual capacities - 953,980MB versus 953,740MB. RAID 1 mirroring requires both drives to have exactly the same usable size so every block on one drive can be mirrored to the other, and this 240MB discrepancy causes the OS-level RAID 1 option to be grayed out.

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B. Both drives should be in adjacent slots. Physical drive slot placement does not affect the ability to create a software RAID 1 array; the OS manages mirroring logically regardless of slot position.

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C. Both drives should be less than 1TB. There is no capacity restriction requiring drives to be under 1TB for RAID 1; the issue is the mismatch in actual capacity between the two drives, not their absolute size.

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D. The technician needs to provision the drives first. Provisioning or initializing drives is a prerequisite step but would not resolve the underlying capacity mismatch that is preventing RAID 1 creation.

A technician needs to configure a new server with multiple drives. The technician was instructed to make the OS RAID 1. The two drives the technician is using are from different manufacturers, but…

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