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Question 31 - D-XTR-DS-A-24 discussion

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Which XtremlO X2 hardware component provides a backup power source to save journaling data during an unplanned emergency shutdown?

A.
BBU
Answers
A.
BBU
B.
PSU
Answers
B.
PSU
C.
SuperCap
Answers
C.
SuperCap
D.
NVRAM
Answers
D.
NVRAM
Suggested answer: C

Explanation:

In the event of an unplanned emergency shutdown, the XtremIO X2 hardware component that provides a backup power source to save journaling data is the SuperCapacitor (SuperCap). The SuperCap is designed to maintain power to the system long enough to ensure that all in-flight writes are committed to non-volatile memory, preserving data integrity. Unlike a battery backup unit (BBU) which may provide power for a longer duration, the SuperCap is specifically designed for short-term power retention to protect data during transient power interruptions1.

The User Guide for XtremIO, which includes power down and power up procedures, would typically detail the role of the SuperCap in emergency shutdown scenarios1.

Additional information on the hardware components and their functions can be found in the Reference Architecture Guide for Dell EMC XtremIO2.

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asked 16/09/2024
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