Learn about NetApp’s default RAID type for hard disk drives (HDDs) larger than 10TB when creating a new HDD-based aggregate. Understand why RAID-TEC is used and how it provides optimal protection and performance for large capacity drives.
Table of Contents
Question
You are creating a new HDD-based aggregate with disk sizes greater than 10 TB.
In this scenario, what is the NetApp default RAID type?
A. RAID DP
B. RAID 4
C. RAID 0
D. RAID-TEC
Answer
D. RAID-TEC
Explanation
When creating a new HDD-based aggregate using disk sizes greater than 10 TB, NetApp’s default RAID type is RAID-TEC (Triple Erasure Coding).
RAID-TEC is an advanced RAID level specifically designed by NetApp for large capacity drives. It provides triple parity protection, allowing the aggregate to withstand up to three simultaneous disk failures without data loss. This is an improvement over the double parity protection offered by RAID-DP (Double Parity), which is the default RAID type for disk sizes up to 10 TB.
RAID-TEC uses a combination of erasure coding and striping to achieve high levels of data protection and performance. It distributes data and parity information across all disks in the aggregate, ensuring optimal data placement and faster rebuild times in the event of a disk failure.
By using RAID-TEC for disk sizes greater than 10 TB, NetApp ensures that the aggregate has the necessary level of protection to handle the increased risk associated with larger capacity drives. The triple parity protection provided by RAID-TEC helps maintain data integrity and availability, even in the face of multiple disk failures.
In summary, when creating a new HDD-based aggregate with disk sizes greater than 10 TB, NetApp’s default RAID type is RAID-TEC (Triple Erasure Coding), which offers triple parity protection and optimal performance for large capacity drives.
Therefore, the correct answer to the question is: D. RAID-TEC
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