start /SYS --> starts the machine
start /SP/console --> starts the system console
These are ILOM commands. i believe you are using a blade server.
if your blade server is in poweroff state start /SYS will power on the server. so once you are hardware is powered on if you want to take a console of your machine then you need to give start /SP/console
Oracle has lot of documentations for your queries.
first, can you tell us what kind of sun server you have?
as we can see from the commands you are using the ILOM, are you connected via serial or over net to it?
to reach the "start /SYS" you need to connect via the Serial Management Port, default logins are root and password is changeme.
after that just tipe start /SYS and the server should start.
If you like to open the Serial console just type start /SP/console...
if you like to use the Java Virtual Console you need to configure the Network Management Port under /SP/network
cd /SP/network
set pendingipaddress=192.168.1.100
set pendingipnetmask=255.255.255.0
set pendingipgateway=192.168.1.1
set commitpending=true
this was only an example, use yours ip adresses!
after that connect the NET MGT (network management port ) with a networkcable to your network and on you client host open a webrowser and type the ip address you configured befor...
you can connect to the NET MGT only if you have configured it!
here a simple step-by-step:
1-Connect Laptop/PC to the Serial Port
You need a Serial to RJ45 Ethernet apdapteror if your laptop/pc doesn't have a serial output than you need a USB-To-Serial converter and attacha Serial-To-RJ45 adapter
To connect to the serial port use a software like putty.
The connections settings should be:
Speed 9600
Data bits 8
Stop bits 1
Parity None
Flow control None
2- Connect power source and wait until you receive the login screen on putty
3- Login with username: root and password: changeme
4- type start /SYS to start the server
5- type start /SP/console to connect to the console