17
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 Specification
Remarks
Maximum data backup time
64 hours
Full charging
Outer dimension (mm)
49 (width) × 68 (depth) × 15 (height)
Weight
About 0.07 kg
Battery capacity
4.22 Wh
Normal operation
Temperature
10
°
C - 35
°
C
Operating
environment
Humidity
20% - 80%
Without condensation
Temperature
0
°
C - 35
°
C
Storage
environment
Humidity
20% - 80%
Without condensation
Life (battery back)
About 2 years
Varies depending on
operating environment and
boundary conditions
Summary of Contents for N8103-100
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Page 24: ...2 3 1 2 2 2 1...
Page 25: ...3 4 1 1 2 1 3 1 4 1 Set up Date Y M...
Page 26: ...4 5 1 2 3 4 1 2 3 XXX 4 N8103 100...
Page 27: ...5 Y M Set up Date 6 5 5 6 6 6 1 6 2 2 2 NEC...
Page 28: ...6 2 N8103 99 0ch 1 1 1...
Page 29: ...7 1 2 X X X Y 2006 M 08 Y M Set up Date 2 2 64 3...
Page 30: ...8 1 3 N8103 99 1 2 3...
Page 31: ...9 1 2 3...
Page 33: ...11 3 Logical Logical Virtual Disk 4 Properties Default Write Policy Logical Operations...
Page 37: ...15 3 1 NEC NEC 2 2 1 MegaRAID Storage ManagerTM MSM 2 2 2 2...
