3par 8400 repair node

[pogreb33]

Hi all!
I need to replace the controller (1 of 4) with 8440
Give answers to my question:
1. How to connect using a com port? Didn't find settings for putti
2. The controller comes from another storage. I need to clear data
Whack>unset sys_serial_10

Whack>unset w19

Whack>achi init

Whack>achi erase

Whack>reset

3. Can the replacement be done during business hours or does the storage need to be shut down?

[Satish04]

Hi pogreb33,

1. To connect to the HPE 3PAR controller using a COM port, you will need a serial cable and a terminal emulator program such as PuTTY.

Here are the steps to connect:

1. Connect the serial cable from your computer to the serial console port on the HPE 3PAR controller.
2. Open "PuTTY", select the appropriate COM port, set the baud rate to 57600, and choose the appropriate flow control.
4. Click "Open" to establish the connection.

2. If you are replacing a controller that comes from another storage system and you need to clear the data on it, please follow the below steps:

1. Use the "unset sys_serial_10" command to unset the system serial number.
2. Use the "unset w19" command to unset the write cache parameters.
3. Use the "achi init" command to initialize the Adaptive Cache and Hybrid InfiniBand.
4. Use the "achi erase" command to erase the contents of the Adaptive Cache.
5. Finally, use the "reset" command to reboot the controller.

Please note that these commands may vary depending on the specific version of the HPE 3PAR OS and the controller model.

3. The replacement of a controller can typically be performed without shutting down the entire storage system.
However, it is recommended to schedule the replacement during a maintenance window or a time when the workload on the storage system is minimal. This helps to minimize any potential disruption or impact on the ongoing operations.
It is also important to follow proper procedures and guidelines provided by HPE for controller replacement to ensure a smooth transition and maintain the integrity of the storage system.

Please refer to the below link for the controller replacement procedure:
URL - https://support.hpe.com/hpesc/public/videoDisplay?videoId=vpsg00004840en_us

Do get back to us, if you need further help.

Regards,
Satish

[pogreb33]

Hi!

Big thanks for answers

OS 3.3.1.410 MU2

Open "PuTTY", select the appropriate COM port, set the baud rate to 115200, and choose the appropriate flow control.

1. What should be the speed COM
115200 or 57600 ?

2 .Do I need to take action on my part before shutting down a node?
Am I unplugging the cables and deleting the node?

3. If I connect to a running node via putty what will I see

[Satish04]

Hi pogreb33,

The recommended speed for the COM port when connecting to an HPE 3PAR storage system is 57600.

Regarding shutting down a node, it is important to follow proper procedures to ensure the safety and integrity of the system.

Before shutting down a node, you should follow the below procedure:

1. Make sure there are no critical or active tasks running on the node that needs to be completed or properly terminated before shutting down.

2. If the node is part of a cluster or has redundancy configured, it is recommended to perform a failover or handover to ensure that the workload is transferred to other nodes without interruption.

3. Follow the recommended shutdown procedures provided by HPE for the specific HPE 3PAR model and software version. This typically involves using the CLI or management interfaces to initiate the shutdown process.

4. Once the node is powered off, you can safely disconnect the power cables and any other connected cables, such as network or FC cables.

5. If the node is being permanently removed from the HPE 3PAR system, you may need to perform additional steps to remove it from the cluster or configuration. This can involve using management tools or CLI commands to remove the node and update the configuration accordingly.

6. Once you are connected to the node via PuTTY, you can enter commands at the CLI prompt to interact with the HPE 3PAR system. The CLI allows you to perform various administrative tasks, configure settings, monitor system status, and manage storage resources.

Please refer to the below URLs for node removal/replacement of node:

URL - https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=c03926176

URL -  https://support.hpe.com/hpesc/public/videoDisplay?videoId=vpsg00000041en_us 

Hope this helps.

Regards,
Satish

[pogreb33]

1. If the new controller asks to update the firmware, what command should I do this - upgrade cage?

2. Do I need to specify the vault serial number in hack mode

[Satish04]

Hi pogreb33,

HPE 3PAR nodes are configured as clusters or Node pairs.

To update the firmware on a replaced node in an HPE 3PAR 8400 storage system, you can follow the below steps:

1. Ensure that the replacement node is properly installed and connected to the storage system.
2. Connect to the node using SSH or serial console.
3. Run the command "admithw" to join the node into the cluster.
4. Node will reboot and it will join into the cluster and will sync with another node in the cluster and it does not require manual upgrade for the replaced node.

Hope this helps.

Regards,
Satish

[Sunitha_Mod]

Hello @pogreb33,

Let us know if you were able to resolve the issue.

If you have no further query and you are satisfied with the answer then kindly mark the topic as Solved so that it is helpful for all community members.

[pogreb33]

Hi

Before executing the commands below, I needed to specify a number for the new node.
I did it with the  team - prom edit

unset sys_serial_10
unset w19
ahci init
ahci erase
reset

then performed an update of the firmware of the SAS chip  - upgradecage -a

after   checkhealth -svc -detail   -  looking at errors

set perm sys_serial_10=**confidential info erased**
set perm w19=0x223F7E

Big thanks