For aggregates or traditional volume SyncMirror to work correctly, the configuration of each plex should be identical with regard to which aspects?

• A. NVRAM
• B. Mirrored Snapshot copies
• C. RAID groups and disk sizes
• D. NDMP and Snapshot copies

Answer: (C)

For SyncMirror to function correctly, the two plexes in an aggregate or traditional volume must be built the same way in terms of data layout. That means they should use the same RAID group configurations and the same disk sizes. When the two plexes have identical storage structures, every write can be mapped to the same logical location on both sides, allowing the system to keep them perfectly synchronized and recover gracefully if one side fails. Differences in RAID layout or disk size would create mismatched data layouts, making it impossible to maintain a true mirror and potentially leading to synchronization problems or wasted capacity.

Other aspects like NVRAM, snapshot copies, or NDMP-related settings are not required for SyncMirror to work. They may be present or configured for performance or backup purposes, but they do not determine whether the mirrored plexes can synchronize correctly.