NEC N8103-136, Руководство пользователя

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16
Chapter 1 Overview
First read this chapter if you use the N8103-136 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 N8103-134 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 Specification Remarks
Maximum data backup time 72 hours Full charging
(Even charge completion
is about 10 hours.)
Outer dimension 52 (width) × 55.6 (depth) x
14.1 (height) mm Excluding battery cable
Weight Approx. 0.10 kg
Power consumption 1.92 W
Temperature
10
°
C to 35
°
C
Operating
environment
Humidity 20% to 80% Without condensation
Temperature
0
°
C to 35
°
C
Storage
environment
Humidity 20% to 80% Without condensation
Life (battery back) About 2 years Varies depending on
operating environment
and boundary conditions