Fan
The fan cools the controller.
NVDIMM battery
A NVDIMM battery is responsible for maintaining power to the NVDIMM module.
NVDIMM
The NVDIMM (non-volatile dual in-line memory module) manages the data
transfer from the volatile memory to the non-volatile storage, and
maintains data integrity in the event of a power loss or system shutdown.
PCIe or Mezzanine card
A PCIe (peripheral component interconnect express) card is an expansion card that plugs into the PCIe slot on
the motherboard.
A Mezzanine card is an expansion card that is designed to be inserted into a specialized slot on the
motherboard.
Power supply
A power supply provides a redundant power source in a controller shelf.
Real time clock battery
A real time clock battery preserves system date and time information if the power is off.
Boot media
Overview of boot media replacement - ASA C400
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 file.
You also must copy the
image_xxx.tgz file to the USB flash drive for later use in this procedure.
•
The nondisruptive and disruptive methods for replacing a boot media both require you to restore the
var
file system:
◦
For nondisruptive replacement, the HA pair must be connected to a network to restore the
var file
system.
◦
For disruptive replacement, you do not need a network connection to restore the
var file system, but
the process requires two reboots.
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