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- Feb 15, 2014
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- 20,176
If these drives are intended for archiving data but are not recommended (not even by Seagate) for attachment to a RAID controller, then isn't the only way to ensure the safety of the archived data to have two or more such drives to which the files are copied separately? (And it just occurred to me: with drives that are mirrored -- whether using FreeNAS or hardware RAID -- are there periodic checks for consistency between the two or more sets of data?)
Well, with ZFS, the whole point is that integrity is guaranteed. If you replicate it or even if you just copy it over to a second ZFS pool (as long as the network insures data integrity), it'll be independently guaranteed to not degrade. Performing a regular comparison between two pools is a bit redundant, but can be done "by hand" (meaning, not handled by ZFS).