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Question 110 - SK0-005 discussion

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Users have noticed a server is performing below Baseline expectations. While diagnosing me server, an administrator discovers disk drive performance has degraded. The administrator checks the diagnostics on the RAID controller and sees the battery on me controller has gone bad. Which of the following is causing the poor performance on the RAID array?

A.
The controller has disabled the write cache.
Answers
A.
The controller has disabled the write cache.
B.
The controller cannot use all the available channels.
Answers
B.
The controller cannot use all the available channels.
C.
The drive array is corrupt.
Answers
C.
The drive array is corrupt.
D.
The controller has lost its configuration.
Answers
D.
The controller has lost its configuration.
Suggested answer: A

Explanation:

The write cache is a feature of some RAID controllers that allows them to temporarily store data in a fast memory buffer before writing it to the disk drives. This improves the performance and efficiency of write operations, especially for random and small writes. However, if the battery on the controller goes bad, the controller may disable the write cache to prevent data loss in case of a power failure. This can degrade the disk drive performance significantly, as every write operation will have to wait for the disk drives to complete. Reference: https://www.dell.com/support/kbdoc/enus/ 000131486/understanding-raid-controller-battery-learn-cycle

https://www.techrepublic.com/article/understanding-raid-controller-write-cache/

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asked 02/10/2024
Mark Theeuwes
41 questions
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