Replace the 3TB HDD by a SSD and still use fusion drive with 128GB SSD blade and 2.5” SSD.What would make more sense if I were to upgrade the drive: Is there some other benchs / tests I can do to point out a drive problem ?.What speed should I normally get with a fusion drive with these specs (didn’t bench the machine when it was brand new so I don’t really know what I should expect from the fusion drive) ?.I would need help with the following questions:
I checked with iostat and most of read / write operations use the SSD part of the fusion drive first, so nothing seems wrong here.Blackmagic disk speed test shows between 120 to 200MB/s write and 450 MB/s read speed.I ran some benchmarks on the fusion drive and here are the results: I don’t think it’s because of the CPU nor the RAM (both are never at 100%). I don’t really know when it happened but I feel it has become slower. I have a late 2013 27” iMac with the max specs possible at the time (i7, 32GB RAM, 3GB Fusion drive (with 128GB SSD blade)).
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