3-4
(1) Power supplies (PS0/PS1)
The power supplies are provided to supply power to the disk array unit. See Section 3.3 "Power
Supply" for details.
(2) Controllers (CONT0/CONT1)
The controller boards are provided to control the disk array unit. See Section 3.4 "Controller" for
details.
(3) Battery backup unit (BBU1/BBU0)
The battery back units are provided to protect data in the cache memory when a power failure occurs.
In the standard configuration, one battery backup unit is installed in each power supply.
The battery backup units are also provided as optional batteries (NF1400-SZ01E,) for the expansion
configuration.
See "3.5 Battery Backup Unit" for details.
(4) Fans (FAN1-[0]/FAN1-[1]/FAN0-[0]/FAN0-[1])
The fans are provided to prevent the heat-up of the overall system.
When the power switch is set to ON, four cooling fans are rotating. Note that the ventilating holes are
not blocked.
Install the disk array unit so that the ventilating holes may not be blocked. If either or
both of the ventilating holes are blocked, the internal temperature of the disk array
unit may increase to cause a fault to occur.
The disk array unit is equipped with four fans. Even if a fan fails, the air-cooling
conditions for the entire disk array unit are satisfied. However, to guarantee the
safety operation of the disk array unit, replace the power supply immediately if a fan
failure occurs.
(5) Power control card (PCC)
A power control card can be additionally installed as an option for the NF1400-SR40E only. In the
standard configuration, a dummy assembly is installed as a cover in place of the power control card.
When the disk array unit is turned OFF, the power control card is used for writing the remaining cache
data from the disk array unit into the disk drive according to the instructions from the external power
controller.
See "3.6 Power Control Card" for details.
Содержание S1400 NF1400-SR40E
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