LaCie 12big Rack Fibre 8 Bedienungsanleitung PDF herunterladen (Seite 17)

LaCie 12big Rack Fibre 8 System Overview

User Manual page 17

1.4.2.1. Battery Module

The 12big Rack Fibre 8 RAID Controller module assembly includes

a removable backup battery module, located as shown in Fig. 09.

The battery module contains a user replaceable cell battery pack,

see Fig. 10. The battery pack provides protection of the controller

cache contents if the AC power fails. A fully charged battery should

provide up to 72 hours of protection.

The battery charging behavior is described as follows: during initial

startup, the battery charging system will enable the battery char-

ger to complete a full charge cycle. Once the charge completion

indication is detected from the charger, the charger is monitored

for an additional period of three hours for further charge activity.

If no charge activity is detected within that three hour window, the

battery is considered to be fully charged, and the charger is dis-

abled. Routinely, after every ﬁve days (7,200 minutes), the charger

is re-enabled to provide a top-off charge to the battery. Again, once

the charge completion indication is detected from the charger, the

charger is monitored for an additional period of three hours for fur-

ther charge activity. If no charge activity is detected within that three

hour window, the battery is considered to be fully charged, and the

charger is disabled until the next top-off charge interval elapses.

1.4.2.2. Fibre Channel Interface

The 12big Rack Fibre 8 RAID Controller module provides two Fibre

Channel SFP host interface connections. The controller uses two SFP

cages to capture the removable SFP optical modules. These connec-

tions are labeled Host 0 and Host 1. Please contact your supplier for

a list of qualiﬁed SFP optical components.

Each connection is bi-directional between the Fibre Channel host

side interface and the drives. The drives will not be presented to the

Host until they are conﬁgured into disk arrays and logical drives, and

then mapped by the controller.

TECHNICAL NOTE: There are no external terminators required

with Fibre Channel architecture.

IMPORTANT INFO: Optical SFP modules must be UL (or other

North American NRTL) RECOGNIZED COMPONENT and the laser

in the module must comply with Laser Class 1, US 21 CFR (J) and

EN 60825-1.

Fig. 10 - Backup Battery Module

Fig. 11 - Sample SFP Optical Modules - Shown Right Side

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LaCie 12big Rack Fibre 8 Bedienungsanleitung Seite 17