Production Time Is Monday to Friday 8:00 to 18:00

question 145

Multiple Choice

Production time is Monday to Friday 8:00 to 18:00.  There are three LUNs, respectively LUN1, LUN2, LUN3, LUN1 with a size of 500G, all IO. The average response time needs to be within 5ms, the size of LUN2 is 4TB, the coexistence of hot and cold data (with 12.5% of the hot data) , and the size of LUN3 is 10TB. If performance requirements are not high and the engineer plans to use SmartTier, which of the following description is correct? (Multiple choice)

• A) Use 3-tier Tier, 1TB high performance layer, 4TB performance layer, 10TB capacity layer, and configure LUN1 to allocate high-performance layer capacity first, LUN2 preferentially allocates performance layer capacity and LUN3 preferentially allocates capacity layer capacity
• B) Use 3-tier Tier, 1TB high-performance layer, 4TB performance layer, 10TB capacity layer, configure LUN1 and LUN2 to migrate automatically, and LUN3 priority allocation of low-performance layer capacity
• C) The use of 3-tier Tier, high-performance layer 1TB, performance layer is 4TB, capacity layer is 10TB, while configuring LUN1, LUN2, LUN automatic relocation. The LUN3 is migrated preferentially to the low-performance layer
• D) Set the monitoring period of the Smart tier to 8:00 to 18:00 every day from Monday to Friday. The migration period is not overlapped with the monitoring period

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Definitions:

User Defined Input

A setting or value entered into a system by the user to customize operations or outcomes.

Pre-determined Speed

The speed set for a machine or device, decided before it is operated.

Rated Speed

Rated speed is the speed at which an electric motor or machine is designed to operate under a specific load to achieve optimum performance.

VFD Technology

Variable Frequency Drive technology, enabling control of the speed and torque of electric motors by varying the input frequency and voltage.