Which three statements are true about Automatic Hard Disk Scrubbing and repair on high-capacity storage servers in an X5 Database Machine?
A. Disk repair is made immediately from Smart Flash Cache for corruption on disk when the corresponding data is clean in the Smart Flash Cache.
B. Hard disks are scanned every two weeks by default but only when disks are idle.
C. Hard disks are scanned every two weeks by default in all situations.
D. Disk repair is made immediately from Smart Flash Cache for corruption on disk when the corresponding data is dirty in the Smart Flash Cache.
E. Disk repair may be made from another mirror copy if the corrupt area is part of a Normal or High Redundancy Disk Group.
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ABE
Oracle Exadata System Software automatically inspects and repairs hard disks periodically when the hard disks are idle. The default schedule of scrubbing is every two weeks.
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmso/new-features-exadata-system-software-release-12.html#GUID-858C2C58-D13B-41BB-A288-9801C4BBED35
ABE