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Drive bay numbering: SAS expander
Drive 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 to 4.
SAS expander port 4 = drive numbers 5 to 8.
SAS expander port 5 = drive numbers 9 to 12.
SAS expander port 6 = drive numbers 13 to 16.
SAS expander port 7 = drive numbers 17 to 20.
SAS expander port 8 = drive numbers 21 to 24.
SAS expander port 9 = drive numbers 25 to 28.
Common configuration examples:
NVMe drives
NVMe drives
When any stacked 2 SFF drive cage is connected to the SAS expander, the drive numbering skips the second number. For example,
when a rear 2 SFF drive cage is connected to SAS expander port 9, then the drive numbers are 25 and 27.
HPE ProLiant DL385 Gen10 Plus v2 Server Maintenance and Service Guide
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