Date: Fri, 4 Dec 2020 23:43:15 +0000 From: tech-lists <tech-lists@zyxst.net> To: freebsd-questions@freebsd.org Subject: effect of differing spindle speeds on prospective zfs vdevs Message-ID: <X8rJkzAqgS%2B95K7F@rpi4.local>
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[-- Attachment #1 --] Hi, Normally when making an array, I'd like to use all disks all same speed, interface, make and model but from different batches. In this case, I've no choice, so we have multiple 1TB disks some 7.2k some 5.4k. I've not mixed them like this before. What effect would this have on the final array? Slower than if all one or the other? No effect? I'm expecting the fastest access will be that of the slowest vdev. Similarly some disks block size is 512b logical/512b physical, others are 512b logical/4096 physical, still others are 4096/4096. Any effect of mixing hardware? I understand sfs sets its own blocksize. thanks, -- J. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE8n3tWhxW11Ccvv9/s8o7QhFzNAUFAl/KyYoACgkQs8o7QhFz NAXhtw/9HRKodKuPnwODs1Yfqi19GjfSkktJrqL1SHsKVS106JNXae4lWmnodULk xCsNaY+CP8MhzBbrwD5ibSSja4TTN23E9ej0p+bXlcnOx1c906FZuS7Iy478GPKL IMLmw5eLxRRPQKxdEE2Lc9yvDLQHZfdtYn9fhHN5bp+bWkZ9Zt37MpBVOofd8lo4 j2UgCAwu3ktAgFGcx+ZKxAG0dVQuZ5nozI0jETabm6i/nkjt1CSWq1LlOIyalkqe jdohtBdaccW3lD76/AgP2BmQn6IWdv3rT3gAPsWizikTXAd3WzO9SM8bOSFvsyCK wLJ8EPkecPXOTwVCLGd7ubywzfTJvNKIM8GifTq7Ns4GFkR3uyotHTItea0QIMy5 hBsXdj5ZlHvb/CJ/5jCt3H/15q8qcA00tuF0t+PmVodFZEMBWa98D45yVt2lexmi oXkO3MyEFz8YQVj8qkjx6PdUBPO43w7j6PEVhumSgCXUECW6TWSWhmmyavdT8vbU xv4lKRt2iQprNDoGkPem13gjIcNy6Xkr8To8ENdoVDwjDDBmVx4Wbisf27waQwv3 dGOwV5Plp1FQhprOmJ/YGFEcrf7uhg8lk3l25Nx0dR1234WsKiIPxON8+ILO70/e OD5mYaGcZJ6KKT2w8Ws76kTaIlGTpMC5Wy44ivcpPhFFd+SkNXA= =zt4Y -----END PGP SIGNATURE-----
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