Greetings:
This should hopefully be a very simple question to answer, however I just want to make sure since I am new to ZFS. I set up my 8-disk TrueNAS system with 1 VDEV configured for RAIDZ2. I chose the defaults which has "copies=1" set. I am under the impression that should something like bit rot occur on a file that ZFS would attempt to grab the correct duplicate copy of this and then it would copy the correct duplicate in a new location and use that instead of the incorrect entity, all despite "copies=1" being set. I came across some poorly worded stuff that made it seem like "copies=2" or higher would need to be set to achieve this result. I believe this to be wrong and that the "copies=" values greater than 1 give that data integrity capability for situations where there is only a single drive. Am I correct with what I'm describing here or am I way off? I have tried to read up on stuff but I just want to make sure I'm not misinterpreting things. Thank you for any help you can provide with this. I have been very impressed with ZFS for the few days I've been exposed to it and want to learn as much about it as possible.
Kind regards,
Anthony
This should hopefully be a very simple question to answer, however I just want to make sure since I am new to ZFS. I set up my 8-disk TrueNAS system with 1 VDEV configured for RAIDZ2. I chose the defaults which has "copies=1" set. I am under the impression that should something like bit rot occur on a file that ZFS would attempt to grab the correct duplicate copy of this and then it would copy the correct duplicate in a new location and use that instead of the incorrect entity, all despite "copies=1" being set. I came across some poorly worded stuff that made it seem like "copies=2" or higher would need to be set to achieve this result. I believe this to be wrong and that the "copies=" values greater than 1 give that data integrity capability for situations where there is only a single drive. Am I correct with what I'm describing here or am I way off? I have tried to read up on stuff but I just want to make sure I'm not misinterpreting things. Thank you for any help you can provide with this. I have been very impressed with ZFS for the few days I've been exposed to it and want to learn as much about it as possible.
Kind regards,
Anthony