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23
Chapter 1 Overview
First read this chapter if you use the N8103-110 Additional DAC Battery (called Battery
Backup Unit=BBU) for the first time.
This chapter describes the characteristics and configuration of the BBU-Plus3 and outlines
the additional battery installation job.
1. Characteristics of BBU
The BBU is an additional battery exclusively used for the N8103-109 RAID Controller
(called RAID Controller hereafter).
Connecting the BBU to the RAID Controller can prevent data from being lost due to an
accident including instantaneous power interruption (in the WriteBack mode).
Backup of data in SDRAMs on RAID Controller for up to 72 hours
Improvement of reliability in WriteBack mode
Use of rechargeable lithium ion battery
2. Specification
Item
Maximum data backup time
Outer dimension
Weight
Operating voltage
Power consumption
Operating
Temperature
environment
Humidity
Storage
Temperature
environment
Humidity
Life (battery back)
Specification
72 hours
58 (width) × 52 (depth) x 10
(height) mm
Approx. 0.10 kg
3.7 V or higher
1.92 W
10 C to 35 C
20% to 80%
0 C to 35 C
20% to 80%
About 2 years
Remarks
Full charging
Excluding battery cable
In normal operation
Without condensation
Without condensation
Varies depending on
operating environment and
boundary conditions
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