Can you control the power?

Here is a little test.  Check your documentation:   Do you know how to power down and power up the equipment in your computer room?   If you had to power off your site in a hurry would you know how?   If you wanted to script a shutdown, could you do it?

Here are some hints and tips that might help you with some of my favourite products:


The process to power up or down your DS8000 is documented in the Information Center here.

Scripted shutdown

If you want to script powering off a DS8000 storage unit you can use the chsu -pwroff DSCLI command.   This command will shut down and power off the specified DS8000 unit.  Be careful before powering off the unit to ensure that all I/O activity has been stopped. An example of the command is shown below.   Your machine will have a different IP address, password and serial number to mine.  Note the serial number always ends in zero because we send the command to the storage unit.

dscli -hmc1 -user admin -passwd passw0rd chsu -pwroff -dev IBM.2107-75DC710

It takes over a minute before you will see any change in the machine.  So be patient.  The HMC will not power off.   You can either leave it powered on or shut it down manually.

To power the DS8000 back on, use the  chsu –pwron command:

dscli -hmc1 -user admin -passwd passw0rd chsu -pwron -dev IBM.2107-75DC710

Storwize V7000 and SVC

The Storwize V7000 Information Center explains the process to power down here and power up here.

The SVC Information Center explains the process to power down and up here.

I created a short video on how to shutdown your Storwize V7000 using the V7000 GUI. You can view it on Youtube:

If you want to issue this command from a script, you could use a single shot method like plink.  In this example we first confirm we can connect to the Storwize V7000 and that both node canisters are up and running.  These commands will also work on an SVC.

C:\Program Files (x86)\PuTTY>plink -i icat.ppk admin@ svcinfo lsnode
id name  UPS_serial_number WWNN             status IO_group_id
4  node1                   50050768020004F4 online 0
17 node2                   50050768020004F5 online 0

We then issue the stopcluster command.  Note it requires a response (you need to enter the letter y).

C:\Program Files (x86)\PuTTY>plink -i icat.ppk admin@ svctask stopcluster -force
Are you sure that you want to continue with the shut down?


The IBM Redbook, IBM XIV Storage System: Architecture, Implementation, and Usage, found here explains the power off process very well so I reproduced the following two pages using Slideshare:

How to Power off your IBM XIV

Just to give a clear example, I like to first confirm the XIV is powered on and responding using a state_list command.
C:\Program Files (x86)\XIV\GUI10>xcli -m -u admin -p adminadmin state_list
Category          Value
system_state      on
target_state      on
safe_mode         no
shutdown_reason   No Shutdown
off_type          off
redundancy_status Full Redundancy

We now issue the shutdown command to power the XIV down.  Note that I end the command with a -y to force confirmation.  If you do not use the -y then the command will not work as we are not in interactive mode.

C:\Program Files (x86)\XIV\GUI10>xcli -m -u admin -p adminadmin shutdown -y
Command executed successfully.

If you are getting email notifications from the XIV, you will get an email that looks like this, which is a nice way of saying goodbye:

 Event details:
Severity:    Major
Code:        USER_SHUTDOWN
Description: System is shutting down due to a user request.

ID:          7723
Time:        2011-08-08 12:58:48
System ID:   3760

Final comments?

The ability to power down your storage via a single command is fairly significant.   You clearly do not want that ability to be misused, so changing your passwords away from defaults is very important.   When I visit a customer and find their passwords are defaults it makes my life easy but makes my heart quail.   I call the following message the Brocade logon message of shame, kudos to Brocade for posting this at every logon until passwords are changed, brickbats for clients who ignore it and hit control-C.


About Anthony Vandewerdt

I am an IT Professional who lives and works in Melbourne Australia. This blog is totally my own work. It does not represent the views of any corporation. Constructive and useful comments are very very welcome.
This entry was posted in DS8800, IBM Storage, IBM XIV, Storwize V7000, SVC and tagged , , , , , . Bookmark the permalink.

One Response to Can you control the power?

  1. Pingback: Can you control the power? | Storage CH Blog

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