单选题A customer with a small IT budget has one data center. Their main application is a database running on an IBM System Storage DS8000. The database has a data change rate of 50% per day. Once a week， they must do a point-in-time backup from the database to tape. The time it takes to run the backup now exceeds the backup window allowed. The customer requests a proposal to reduce database downtime caused by running backups， with nearly no impact to production volumes. In addition to the tape backup， which DS8000 feature should a technical specialist propose（）AFlashCopyBFlashCopy SECMetro MirrorDGlobal Mirror
单选题
A customer with a small IT budget has one data center. Their main application is a database running on an IBM System Storage DS8000. The database has a data change rate of 50% per day. Once a week， they must do a point-in-time backup from the database to tape. The time it takes to run the backup now exceeds the backup window allowed. The customer requests a proposal to reduce database downtime caused by running backups， with nearly no impact to production volumes. In addition to the tape backup， which DS8000 feature should a technical specialist propose（）
A
FlashCopy
B
FlashCopy SE
C
Metro Mirror
D
Global Mirror
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