September 23, 20232 yr I now have a ZFS mirror Cache pool with 2 2TB SSD drives. One is a WD Red, one a WD Blue. I understand the Red is more NAS oriented and I assume has better durability. Is there a difference in setting up 1 drive first in the pool and then adding the second in terms of the wear it will endure? I ask because I currently have the Blue as primary and will add the Red (following a Crucial MX500 failure - one of many for me). I wonder if I should re-intiatilze the pool to put the Red first vs. just add it as #2. Hope that made sense. Also, I'm wondering if I'm overthinking this since there is a mirror in place. Thanks!
September 23, 20232 yr Do you look older in mirrors? Jokes aside. A mirror, well is a mirror. It's an exact copy. It gets written to at the same time, it gets read from at the same time
September 24, 20232 yr Author LOL - I know, that's a good way to answer my question. Thanks. I was thinking the Reads might be asymmetric. I get the data will be written symmetrically. Anyway, I set it up and it's running great. I am very happy with the ZFS pool approach for cache on 6.12. The ability for drives to be removed gracefully seems much better than the BTRFS approach.
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