EonStor A16E-G2130-4 Installation and Hardware Reference Manual

management interfaces include: telnet, Java-based RAIDWatch manager, or the web-based manager invoked by an http console.

Restore Default LED and button: The push button and LED are used to restore firmware defaults in cases when upgrading firmware or if an administrator forgets system password. For more details, please refer to Chapter 3.

1.2.4DIMM Module

The controller module comes with a preinstalled 512MB capacity or above DDR RAM DIMM module and the allocable size can reach 2GB. The memory socket is located on the side of the controller board.

1.2.5BBU

PN: IFT-9273CBTE

An optional, separately purchased Li-ION battery backup unit (BBU) module (see the diagram below) can sustain cache memory for days during the event of power outage. The battery module comes with an EEPROM that marks the installation date, and system administrators will be notified when the one-year left expectancy is reached. Please refer to Section 2.6 for installation instructions.

Figure 1-8: BBU Module

In accordance with international transportation regulations, the BBU module is only charged to between 35% and 45% of its total capacity when shipped. Therefore, when powering on the subsystem for the first time (see Section 4.4) the BBU will begin to charge its batteries to their full capacity. It normally requires approximately twelve (12) hours for the battery to be fully charged. If the battery is not fully charged after twelve (12) hours, there may be a problem with the BBU module. You may re-install the battery; and if the battery still shows problems with charging, contact your subsystem vendor for a replacement. While the battery is being charged, the LED on the BBU will start flashing. (See Chapter 3.2.6 for details on the LED indicators.)

You can check battery’s charge level using the RAIDWatch software or the embedded firmware utility.

1.2.6Power Supply Units

PN: IFT-9273ECPSU

1-8

Subsystem Components