Replacing The Sg6000-Cn Controller - NetApp StorageGRID Webscale SG6000 Series Installation And Maintenance Manual

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Replacing the SG6000-CN controller

You might need to replace the SG6000-CN controller if it is not functioning optimally or if it has
failed.
Before you begin
• You have a replacement controller with the same part number as the controller you are replacing.
• You have labels to identify each cable that is connected to the controller.
About this task
The appliance Storage Node will not be accessible when you replace the SG6000-CN controller
controller. If the SG6000-CN controller is functioning sufficiently, you can perform a controlled
shutdown at the start of this procedure.
If you are replacing the controller before installing StorageGRID Webscale software, you
Note:
might not be able to access the StorageGRID Appliance Installer immediately after completing this
procedure. While you can access the StorageGRID Appliance Installer from other hosts on the
same subnet as the appliance, you cannot access it from hosts on other subnets. This condition
should resolve itself within 15 minutes (when any ARP cache entries for the original controller
time out), or you can clear the condition immediately by purging any old ARP cache entries
manually from the local router or gateway.
Steps
1. If the SG6000-CN controller is functioning sufficiently to allow for a controlled shutdown, shut
down the SG6000-CN controller.
a. From the service laptop, log in to the grid node:
i. Enter the following command:
ii. Enter the password listed in the
iii. Enter the following command to switch to root:
iv. Enter the password listed in the
When you are logged in as root, the prompt changes from
b. Stop all StorageGRID Webscale services:
service servermanager stop
c. Shut down the SG6000-CN controller:
shutdown -h now
d. Wait for any data in cache memory to be written to the drives.
The green Cache Active LED on the back of the E2800 controller is on when cached data
needs to be written to the drives. You must wait for this LED to turn off.
2. Turn off the power switch on the front of the SG6000-CN controller.
3. If the StorageGRID Webscale networks attached to the controller use DHCP servers, update
DNS/network and IP address settings.
Maintaining the SG6000 appliance | 73
ssh admin@grid_node_IP
file.
Passwords.txt
su -
file.
Passwords.txt
$
to .
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