How does ONTAP protect data against disk failures within an aggregate?

Study for the NetApp Certified Technology Associate NS0-002 Exam. With detailed flashcards and multiple choice questions, including hints and explanations, you'll be well-prepared to ace your exam!

Multiple Choice

How does ONTAP protect data against disk failures within an aggregate?

Explanation:
ONTAP uses RAID-DP, NetApp’s double-parity RAID, inside an aggregate to protect data. Double parity means parity information is spread across disks in two separate ways, so the system can tolerate two disks failing simultaneously and still reconstruct the data. This is crucial during rebuilds, when another disk could fail before the first rebuild finishes. Single-parity protection would only survive one disk failure, and triple parity isn’t used in ONTAP. RAID-DP is indeed the protection mechanism employed by ONTAP.

ONTAP uses RAID-DP, NetApp’s double-parity RAID, inside an aggregate to protect data. Double parity means parity information is spread across disks in two separate ways, so the system can tolerate two disks failing simultaneously and still reconstruct the data. This is crucial during rebuilds, when another disk could fail before the first rebuild finishes. Single-parity protection would only survive one disk failure, and triple parity isn’t used in ONTAP. RAID-DP is indeed the protection mechanism employed by ONTAP.

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