Compiling a Linux Driver for my HBA versus SATA Raid under Manjaro

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Looks like they are already at 7sec?

$ sudo smartctl -l scterc /dev/sdb
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.4-1-MANJARO] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

SCT Error Recovery Control:
           Read:     70 (7.0 seconds)
          Write:     70 (7.0 seconds)

$ sudo smartctl -l scterc /dev/sdc
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.4-1-MANJARO] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

SCT Error Recovery Control:
           Read:     70 (7.0 seconds)
          Write:     70 (7.0 seconds)

And this brings up 2 more other HD thoughts:

  1. how would I check for and change write caching on the drives… I’m assuming having write caching disabled would be a better option in case of crash (preserving data integrity at the cost of speed)… or maybe this is an old idea that might not be as relevant in GNU/Linux as it was in Windows?
    EDIT: Well look at that… it’s another hdparm command/parameter…
$ sudo hdparm -W /dev/sdb

/dev/sdb:
 write-caching =  1 (on)

$ sudo hdparm -W /dev/sdc

/dev/sdc:
 write-caching =  1 (on)
  1. In one of my other posts the discussion evolved to adjusting APM settings on the mechanical drives to 254 (or 255 if they support it) but I thought I would reserve looking into that for this discussion (deciding how the drives would be attached first; SATA versus HBA)… would you have a recommendation for APM settings?
$ sudo hdparm -B /dev/sdb

/dev/sdb:
 APM_level      = 164

$ sudo hdparm -B /dev/sdc

/dev/sdc:
 APM_level      = 164