This is Supermicro Server.
I really don't remember controller model, I set it up about 3 years
ago. I just remember that I needed to reflush controller firmware to
make it work in JBOD mode.
Remember, changing controller firmware may affect your ability to access
drives. Backup first, as your array is still working although
degraded. Then update the firmware of the controller(s), and the
firmware of your Seagate 7200.11 drives.
Note that the preferred modes are in order of choice:
1.) plain AHCI ports connected to the PCI-E bus (includes most built-in
ports on recent motherboards; older boards may have them on the PCI bus)
2.) RAID ports configured as single drive arrays
3.) JBOD ports configured as single drive JBODs
1 is best
2 is preferred over 3 because some controllers have lower performance in
JBOD mode or hide features.
IDE (PATA) ports with a single master drive on them are approximately
1.5 on the ranking. Putting a second drive on a PATA port is like using
a SATA port multiplier: your bandwidth gets reduce and performance can
suffer.
I run the script you suggested:
But it looks like it's still unable to map sd11 and sd12 to an actual
c*t*d*...
How many different controllers do you have? You'll need to look all
this up to sort out the mess. Your logs show you have at least 3
different controllers (c1, c2, and c3) and maybe more for the sd11 and
sd12 devices.
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