In the event of a disk failure, which RAID level enables quick data reconstruction?
A. RAID 3
B. RAID 5
C. RAID 6
D. RAID 10
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In the event of a disk failure, which RAID level enables quick data reconstruction?
A. RAID 3
B. RAID 5
C. RAID 6
D. RAID 10
|
Download Printable PDF. VALID exam to help you PASS. |
|
Correct answer: D
RAID 1+0 is also known as RAID 10 (Ten) or RAID 1/0. RAID 1+0 is also called
striped mirror. The basic element of RAID 1+0 is a mirrored pair. This means that
data is first mirrored and then both copies of the data are striped across multiple
disk drive pairs in a RAID set.
When replacing a failed drive, only the mirror is rebuilt. In other words, the storage
system controller uses the surviving drive in the mirrored pair for data recovery and
continuous operation. Data from the surviving disk is copied to the replacement
disk.
The rebuild operation in RAID 6 may take longer than that in RAID 5 due to the
presence of two parity sets.
Based on ISMv4 page 224 correct ans D (RAID 10)
D because RAID 10 is not parity based, it is a simple mirror. Data copied to the replaced disk.
Correct answer: D