A.OpenStack

B.OceanStor

C.vSphere

D.Hyper-V

A.The RAID setup is the same as the primary side

B.The capacity of the slave lun is the same as that of the master lun

C.Use the same type of disk as the primary side

D.Use the same number of disks as the primary side

A.By default, the low water mark value set by the system is 20. In the Oracle OLTP business scenario, the low water mark value can be appropriately increased to optimize the write performance.

B.When the storage write strategy is write-back, the Cache controls the storage capacity and flushing rate of dirty data through the high and low water levels

C.When the business pressure is high, the high-water level can be appropriately adjusted to avoid frequent triggering of high-speed brushing, so that the system can be stabilized at medium and low speed brushing.

D.The time that I/O stays in the Cache is closely related to the setting of the low water mark. When the low water level value is set higher, the issued I/O can get more opportunities for integration, thereby improving the performance of random writing.

A.The synchronization can be triggered manually by the user or by the system timing.

B.Data replication based on the base layer

C.When supporting file system remote replication, the Quota quota information of the master file system is copied to the slave, and the slave storage system does not need to configure the quota of the slave file system.

D.Data replication is performed in a periodic manner based on ROW snapshots.

A.High business data sources

B.Business monitoring isolation

C.Business Configuration Isolation

D.Business access isolation