Power supply
A power supply provides a redundant power source in a controller.
Real-time clock battery
A real time clock battery preserves system date and time information if the power is off.
System Management module
The System Management module provides the interface between the controller and a console or laptop for
controller or system maintenance purposes. The System management module contains the boot media and
stores the system serial number (SSN).
Boot media
Overview of boot media replacement - AFF A70, AFF A90
The boot media stores a primary and secondary set of system (boot image) files that the
system uses when it boots. Depending on your network configuration, you can perform
either a nondisruptive or disruptive replacement.
You must have a USB flash drive, formatted to FAT32, with the appropriate amount of storage to hold the
image_xxx.tgz.
You also must copy the
image_xxx.tgz file to the USB flash drive for later use in this procedure.
• You must replace the failed component with a replacement FRU component you received from your
provider.
• It is important that you apply the commands in these steps on the correct controller:
◦ The impaired controller is the controller on which you are performing maintenance.
◦ The healthy controller is the HA partner of the impaired controller.
Check onboard encryption keys - AFF A70, AFF A90
Prior to shutting down the impaired controller and checking the status of the onboard
encryption keys, you must check the status of the impaired controller, disable automatic
giveback, and check the version of ONTAP that is running.
If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in quorum or a healthy
controller shows false for eligibility and health, you must correct the issue before shutting down the impaired
controller; see
Synchronize a node with the cluster.
Check NVE or NSE on systems running ONTAP 9.15 and later
Before shutting down the impaired controller, you need to verify whether the system has security key manager
enabled or encrypted disks.
2
To Next Page
Loading...
