When the data migration solution based on remote replication is used, services must be suspended at least once.

Simpana storage strategy is an important parameter is data retention rules to determine the need to back up the contents of the backup time and backup methods. Each copy has an independent data retention period, each copy can be set using______. (Multiple choice.)

OceanStor V3 storage resources are mapped to the bare devices on the host. The host creates a dedicated file system on the host. The test tool is used in the file system. The system produces a large number of 13KB size files, you randomly read these files to test the response time. Changing the prefetch length of 16KB can improve system performance in this case.