Table of Contents
Advertisement
Chapter 1 Overview
Read this chapter if you are using the RAID Battery Backup Unit (called Battery Backup Unit=BBU) for the
first time.
This chapter describes the characteristics and configuration of the BBU and outlines the additional battery
installation procedure.
1. Characteristics of the BBU
Connecting the BBU to the RAID controller can prevent data from being lost in incidents such as
instantaneous power interruptions (in the WriteBack mode).
Backup of data in SDRAMs on the RAID controller for up to 72 hours.
Reliability improvement in WriteBack mode.
Rechargeable lithium ion battery use.
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
67 (width) × 54 (depth) x 13
(height) mm
Approx. 0.10 kg
3.7 V or higher
1.85 W
10°C to 35°C
20% to 80%
0°C to 35°C
20% to 80%
About 2 years
15
Remarks
Full charging
Excluding battery cable
In normal operation
Without condensation
Without condensation
Varies depending on the
operating environment and
boundary conditions
Advertisement
Table of Contents
