Chapter 1 Overview; Characteristics Of Bbu; Specification - NEC N8103-100 User Manual

Chapter 1 Overview

First read this chapter if you use the N8103-100 Additional DAC Battery (called BBU below) for the first time.
This chapter describes the characteristics and configuration of the BBU and outlines the additional battery
installation job.

1. Characteristics of BBU

The BBU is an additional battery exclusively used for the N8103-99 Disk Array Controller (0ch).
Connecting the BBU to the disk array controller can prevent data from being lost due to an unforeseen
accident including instantaneous power interruption (in the WriteBack mode).
Backup of data in cache memory on disk array controller for up to 64 hours
Improvement of reliability in WriteBack mode
Use of rechargeable NiMH battery

2. Specification

Item
Maximum data backup time
Outer dimension (mm)
Weight
Battery capacity
Operating Temperature
environment
Humidity
Storage Temperature
environment
Humidity
Life (battery back)
Specification
64 hours
49 (width) × 68 (depth) × 15 (height)
About 0.07 kg
4.22 Wh
10°C - 35°C
20% - 80%
0°C - 35°C
20% - 80%
About 2 years
Remarks
Full charging
Normal operation
Without condensation
Without condensation
Varies depending on
operating environment and
boundary conditions
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