The SPARC T4-2 server has one SAS2 RAID controller on the motherboard. This controller is connected to six slots on the disk backplane.
The following table shows the PhyNum-to-disk slot mapping for the six-slot SPARC T4-2 backplane.
Table 6 SAS2 Controller Port Mapping for the SPARC T4-2 Disk Backplane
The following example is based on a SPARC T4-2 server with six hard drives. These hard drives are deployed as four individual storage devices and a virtual drive that consists of two hard drives configured as a RAID volume. The controller is attached to these devices in the following manner:
Targets 9, d, e, and f (four individual storage devices).
Target 389 (a RAID volume).
Target a (a DVD unit).
ok probe-scsi-all /pci@400/pci@2/pci@0/pci@4/scsi@0 <---- SAS controller FCode Version 1.00.56, MPT Version 2.00, Firmware Version 9.00.00.00 Target 9 Unit 0 Disk SEAGATE ST930003SSUN300G 0868 585937500 Blocks, 300 GB SASDeviceName 5000c5001cb4a637 SASAddress 5000c5001cb4a635 PhyNum 0 Target a Unit 0 Removable Read Only device TEAC DV-W28SS-R 1.0C SATA device PhyNum 7 Target d Unit 0 Disk HITACHI H103030SCSUN300G A2A8 585937500 Blocks, 300 GB SASDeviceName 5000c5001cb477cb SASAddress 5000c5001cb477c9 PhyNum 1 Target e Unit 0 Disk SEAGATE ST930003SSUN300G 0B70 585937500 Blocks, 300 GB SASDeviceName 5000c5001cb47f93 SASAddress 5000c5001cb47f91 PhyNum 2 Target f Unit 0 Disk SEAGATE ST930003SSUN300G 0B70 585937500 Blocks, 300 GB SASDeviceName 5000c5001cb47f7f SASAddress 5000c5001cb47f7d PhyNum 3 Target 389 Volume 0 Unit 0 Disk LSI Logical Volume 3000 583983104 Blocks, 298 GB VolumeDeviceName 3ce534e42c02a3c0 VolumeWWID 0ce534e42c02a3c0 /pci@400/pci@1/pci@0/pci@b/pci@0/usb@0,2/hub@2/hub@3/storage@2 Unit 0 Removable Read Only device AMI Virtual CDROM 1.00 ok
In this example, the controller ports are attached to the hard drives and the DVD in the following manner:
Note - Target values are not static. The same storage device can appear in two consecutive probe-scsi-all listings with different Target values.
The default boot device has the following values:
Controller = 0
Target = 9
PhyNum = 0
SASDeviceName = 5000c5001cb4a637
SASAddress = 5000c5001cb4a635
If you want to specify another drive to be the boot device, find its PhyNum value in the output and use the SASDeviceName assigned to that device. For example, if you want to use the hard drive in disk slot 3, it has the following values:
Controller = 0
Target = f
PhyNum = 3
SASDeviceName = 5000c5001cb47f7f
SASAddress = 5000c5001cb47f7d