Device Number; Drive Bay Numbers When A Raid Controller Is Used - NEC EXP805 User Manual

Chapter 1 General Description
4.10

Device Number

Drive bay numbers may differ according to the connection of a drive back plane and a controller.

Controller
Connection to a on-board SATA port
‑
Connection to a PCI board (AROC Type-a) to be installed on a dedicated connector for RAID
‑
controller
Connection to a RAID controller PCI board (Type-p) to be installed on riser card
‑

Drive bay numbers when a RAID controller is used

If the drive back plane is directly connected to the controller, the drive bay number starts from 1.
Here we illustrate the examples.
Front
Rear
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Express5800/R120h-2M (2nd-Gen) User's Guide
4. Names and Functions of Parts