Drive bay numbering: SAS expanderDrive bay numbering: SAS expander
Drive numbering through a SAS Expander is continuous.
SAS expander port 1 always connects to port 1 of the controller.
SAS expander port 2 always connects to port 2 of the controller.
SAS expander port 3 = drive numbers 1-4.
SAS expander port 4 = drive numbers 5-8.
SAS expander port 5 = drive numbers 9-12.
SAS expander port 6 = drive numbers 13-16.
SAS expander port 7 = drive numbers 17-20.
SAS expander port 8 = drive numbers 21-24.
SAS expander port 9 = drive numbers 25-28.
Common configuration examples:
When any stacked 2SFF drive configuration is connected to the SAS expander, the drive numbering skips the second number to allow
uFF drive bay numbering.
Front 2SFF to SAS expander port 3:
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