220-1101 · Question #780
After replacing a hot-swappable hard drive in a RAID 5 array, a technician notices decreased disk performance for approximately 12 hours. Which of the following is the most likely cause of the perform
The correct answer is C. The array is repairing corrupt data sectors.. After replacing a hot-swappable hard drive in a RAID 5 array, the array must rebuild the data onto the new drive. This process involves reading data from the remaining drives and writing it to the new drive to restore full redundancy. The performance decrease is due to the intens
Question
After replacing a hot-swappable hard drive in a RAID 5 array, a technician notices decreased disk performance for approximately 12 hours. Which of the following is the most likely cause of the performance issue?
Options
- ALosing a drive caused data loss.
- BData is being written to the new drive.
- CThe array is repairing corrupt data sectors.
- DAnother drive has gone offline.
How the community answered
(38 responses)- A5% (2)
- B8% (3)
- C74% (28)
- D13% (5)
Explanation
After replacing a hot-swappable hard drive in a RAID 5 array, the array must rebuild the data onto the new drive. This process involves reading data from the remaining drives and writing it to the new drive to restore full redundancy. The performance decrease is due to the intensive read and write operations necessary to rebuild the RAID array, which can take several hours depending on the size of the drives and the amount of data.
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