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    Field-Replaceable Units on the NSM4000 Appliance

    Field-replaceable units (FRUs) are components that you can replace at your site. The FRUs in the NSM4000 appliance are of the following types:

    • Hot-swappable FRUs: You can remove and replace these components without powering off the appliance.
    • Cold-swappable FRUs: You must power off the appliance in order to remove, replace, or add these components.

    The FRUs supported in the NSM4000 appliance are listed in Table 1.

    Table 1: NSM4000 Appliance FRUs

    FRU

    Type

    AC power supply

    Cold-swappable, if the appliance has only one power supply module

    Hot-swappable, if the appliance has an additional redundant, functioning power supply module that is plugged into a separate power circuit

    Cooling fans

    Hot-swappable

    DC power supply

    Cold-swappable, if the appliance has only one power supply module

    Hot-swappable, if the appliance has an additional redundant, functioning power supply module that is plugged into a separate power circuit

    Hard disks

    Hot-swappable

    Published: 2014-10-30