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

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