321 Studios GHDX2-2430S-24F4D manual Power Supply Units, New Feature

Galaxy GHDX2-2430S/R-24F4D Installation and Hardware Reference Manual

Figure 1-10: BBU Module, Controller Top Cover, and the Module Slot

The BBU functionality consists of two major parts. One is the charger circuitry mounted on top of the controller main board. The other is an optional BBU module that contains several battery cells. On a single-controller configuration, the BBU is an optional accessory. The BBU module is hot-swappable so it can be replaced while the subsystem is running.

New Feature:

The battery cell packs come with an EEPROM to record the date of installation and other service data; and when the approximate one-year life expectancy is reached (by checking against the real-time-clock), system administrators will be notified for replacing the BBU.

In accordance with international transportation regulations, the BBU is only charged to between 35% and 45% of its total capacity when shipped. After powering on the subsystem (see Section 4.1) the BBU will automatically start charging its battery cells. It usually requires approximately twelve (12) hours for the battery to be fully charged.

The BBU is aware of its life expectancy as well as its charge level. Charge level awareness helps avoid frequent re-charge.

1.2.7Power Supply Units

The subsystem is equipped with three (3) hot swappable, 1U-profile, 405W PSU modules. The PSU modules are located on the rear panel of the subsystem.

1-10 Introduction