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    Drives Missing When HBA is Moved To Another PCIe Slot

    Hi, I have several drives connected to a AsRock X470D4U motherboard (3 PCIe slots) using HP H220 HBA (MPT2BIOS-7.39.02.00, IT mode) and SuperMicro BPN-SAS-216A backplane. The drives are configured into a ZFS array in Ubuntu 19.10, and `lsblk` and `zpool status` both shows all the drives as...
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    "High IOPs queues : disabled" using LSI 9207

    I was looking through /var/lib/syslog on a Ubuntu 19.10 machine that has a LSI 9207-8i HBA and noticed the line Mar 25 21:43:17 db0 kernel: [ 2.931849] mpt2sas_cm0: High IOPs queues : disabled Is it possible to enable High IOPs queues in order to improve IOPS performance of drives connected...
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    LSI 9207-8i, Expander and 24 SSDs (Beginner Confusion)

    I have an LSI 9207-8i card (2 ports) connected to an expander (Supermicro SAS-216EL, 3 ports) via a single mini-SAS cable, which is connected to a 24-drive backplane (Supermicro BPN-SAS-216EB, able to hold a 2nd expander). There should eventually be 24 SATA3 SSDs connected to this backplane...
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    SMBus Cable of Supermicro Power Distributor

    I am trying to locate the SMBus connector of the power distributor (PDB-PT216-8824) in a Supermicro SuperChassis CSE-216 24-bay 2U chassis. This way, we can get the stats from the PSU (Supermicro PWS-1K21P-1R) to a Asrock Rack X470D4U to be displayed in their IPMI dashboard webapp. However, the...