An administrator needs to increase the size of an existing RAID 6 array that is running out of available space. Which of the following is the BEST way the administrator can perform this task?

Question

Options

• AReplace all the array drives at once and then expand the array.
• BExpand the array by changing the RAID level to 6.
• CExpand the array by changing the RAID level to 10.
• DReplace the array drives one at a time and then expand the array.

• A
  14% (7)
• B
  4% (2)
• C
  8% (4)
• D
  75% (38)

Explanation

RAID 6 is a type of RAID that uses block-level striping with two parity blocks distributed across all member disks. It allows for two disk failures within the RAID set before any data is lost1. A minimum of four disks is required to create RAID 6. To increase the size of an existing RAID 6 array, the administrator can replace the array drives one at a time with larger drives and then expand the array. This way, the data and parity are rebuilt on each new drive and the array remains operational during the process.

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