PrepSnap logoPrepSnap
Pass

Question

1.
2.
3.
4.
Answer (Detailed Solution Below)

Option 2 : With single parity, any additional failure or unrecoverable read error during the long rebuild destroys the array, which is why RAID 6 is preferred for large disks

Advertisement

Detailed Solution

सही उत्तर With single parity, any additional failure or unrecoverable read error during the long rebuild destroys the array, which is why RAID 6 is preferred for large disks है।

Key Points
Helpful?
PrepSnapprepsnap.in • Part -A

Question:

An archive of large video files sits on a RAID 5 array built from high-capacity disks. During a rebuild after one disk failure, why do administrators worry about a second failure? / उच्च-क्षमता डिस्क पर बने RAID 5 ऐरे पर बड़े वीडियो फाइलों का संग्रह है। एक डिस्क विफलता के बाद पुनर्निर्माण के दौरान प्रशासक दूसरी विफलता से क्यों चिंतित हैं?

1.
RAID 5 rebuilds delete the parity data to save time
2.
With single parity, any additional failure or unrecoverable read error during the long rebuild destroys the array, which is why RAID 6 is preferred for large disks
3.
RAID 5 cannot rebuild at all on disks larger than 2 TB
4.
The rebuild process physically damages the surviving disks

Correct Answer: With single parity, any additional failure or unrecoverable read error during the long rebuild destroys the array, which is why RAID 6 is preferred for large disks

A rebuild reads every surviving disk in full; on multi-terabyte disks this takes hours, and one unreadable sector or second failed disk exceeds single parity's ability to reconstruct. / पुनर्निर्माण हर जीवित डिस्क को पूरा पढ़ता है; बड़ी डिस्क पर घंटों लगते हैं और एक भी अपठनीय सेक्टर single parity की क्षमता से बाहर है। Option (d) is the trap — rebuilds stress disks but do not physically damage them by design.

Downloaded from PrepSnap (prepsnap.in)