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Question 26/40
Identify the two ways in which the ZFS Storage Appliance provides data integrity.
Correct Answer: B,D
Explanation/Reference:
Explanation:
All operations are copy-on-write transactions, so the on-disk state is always valid. There is no need to fsck (1M) a ZFS filesystem, ever.
Every block is checksummed to prevent silent data corruption, and the data is self-healing in mirrored or RAID configurations. When one copy is damaged, ZFS detects it (via the checksum) and uses another copy to repair it.
Explanation:
All operations are copy-on-write transactions, so the on-disk state is always valid. There is no need to fsck (1M) a ZFS filesystem, ever.
Every block is checksummed to prevent silent data corruption, and the data is self-healing in mirrored or RAID configurations. When one copy is damaged, ZFS detects it (via the checksum) and uses another copy to repair it.
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