System information

Chapter 6. Working with the HMC 205
Power On I/O Domain
To perform power on I/O domain, do the following steps:
1. Expand Service Applications from the Navigation Area on the left side of HMC window,
click Service Focal Point.
2. Click Service Utilities.
3. Select desired system unit, then click the Selected pull down menu to select Operator
Panel Service Functions....
4. Select a partition, and click the Partition Functions pull down menu.
5. Select Concurrent Maintenance Power on Domain (69) - i5/OS.
Power Off I/O Domain
To perform power off I/O domain, do the following steps:
1. Expand Service Applications from the Navigation Area on the left side of HMC window,
click Service Focal Point.
2. Click Service Utilities.
3. Select desired system unit, then click the Selected pull down menu to select Operator
Panel Service Functions....
4. Select a partition, and click the Partition Functions pull down menu.
5. Select Concurrent Maintenance Power Off Domain (68) - i5/OS.
6.6 Remote management
Remote management is enabled through a scripted secure shell environment. In this section
we describe some of the remote function.
Enabling SSH
By default, SSH (secure shell) is disabled on a brand new HMC install. In order to use the
HMC CLI to remotely manage a partitioned system, SSH needs to first be enabled. Enabling
SSH takes affect immediately.
To enable SSH, perform the following tasks, as shown in Figure 6-37.
1. In the Navigation Area, expand the desired host (if there is more than one) and drill down
as follows:
HMC Management → HMC Configuration
2. In HMC Configuration pane, select Enable or Disable Remote Command Execution.
3. Make sure the check box Enable remote command execution using the SSH facility
is selected.
4. Click OK to activate the change.
Attention: Perform an IOP control storage dump under the direction of your next level of
support. Incorrect use of this service tool can result in unnecessary down time and loss of
debug information.