Home » Oracle » 1z0-499 » Which option would you configure a storage pool to meet the requirement of highest performance and high availability for random disk IOPS?
With which option would you configure a storage pool to meet the requirement of highest performance and high availability for random disk IOPS?
A. RAID-5
B. RAID-ZR
C. RAID-1
D. RAID-Z2
E. RAID-Z3
Correct Answer: E
Explanation/Reference:
Explanation:
Z3 is triple-disk failure protection within a multiple disk set, where stripe width var pool disk count.
Data is triply mirrored, yielding a very highly reliable and high-performing system (for example, storage for a critical database). This configuration is intended for situations in which maximum performance and availability are required. Compared with a two-way mirror, a three-way mirror adds additional IOPS per stored block and higher level protection against failures.
Incorrect Answers:
A: RAID-5 has only one parity bit.
C: RAID-1 is disk mirroring.
D. RAID Z2 dual-parity raid is dual disk failure protection within a 9, 10, or 12 count.
References: https://docs.oracle.com/cd/E51475_01/html/E52872/goden.html
http://www.oracle.com/technetwork/server-storage/sun-unified-storage/documentation/o14-001-architecture-overview-zfsa-2099942.pdf
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