RadiSys ATCA-5400 RTM, Reference

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Configuring a hard disk drive array in the SAS BIOS
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In Figure 3 , the top illustration shows the connections between hard disk drives on two RTMs
and the CPMs in the front slots. The bottom illustration shows the connections between a hard
disk drive array and hard disk drives on the RTM, with the CPM in the front slot.
Figure 3. Connections between hard disk drives on two ATCA-5400 RTMs or to a hard disk drive array
Configuring a hard disk drive array in the SAS BIOS
The SAS BIOS can be accessed during the CPM’s boot process, before the main BIOS prompt
appears.
To configure a RAID:
1. Reset the CPM.
2. From the CPM serial console, access the SAS BIOS when you are prompted to press Ctrl-C
to start the LSI configuration utility.
3. The SAS/SATA controller is shown. Select it and press Enter.
Cabled Link
PCB Traces
Custom SAS
Crossover
Standard SAS
Crossover
External hard disk
drive array enclosure
ATCA-4500 CPM
ATCA-5400 RTM
HDD AMC
Port 2
SAS/SATA
controller
Port 1
SAS/SATA
driver
Port 3
0
1
Port 2
Port 0
Port 1
0 1
0
1
SAS 1
0
1
0 1
0
1
0
1
0 1
0
1
Drive enumeration order
:
1) Local RTM hard disk drive
2) Local AMC hard disk drive
3) Upper SAS connector
4) Lower SAS connector
Cabled Link
PCB Traces
Port 3
Port 2
Port 0
Port 3
Port 3
Port 2
Port 0
Port 1
Hard disk
drive
SAS 2
SAS 1
SAS 2
Port 2
Port 0
Port 3
Port 1 Port 2
Port 3
SAS/SATA
controller
SAS/SATA
driver
ATCA-4500 CPM
ATCA-5400 RTM HDD AMC
ATCA-4500 CPM
HDD AMC
Port 2
Port 3
Port 1 Port 2
Port 0
Port 3
SAS/SATA
controller SAS/SATA
driver
Port 3
Port 2
Port 0
Port 1
SAS 1
SAS 2
ATCA-5400 RTM
Drive enumeration order
:
1) Local RTM hard disk drive
2) Local AMC hard disk drive
3) Upper SAS connector
4) Lower SAS connector
Hard disk
drive
Hard disk
drive