IBM DS3950, Руководство пользователя и инструкция по установке

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Note: Be sure to turn on all of the storage expansion enclosures and verify that
there are no ESM or power supply and fan unit fault LEDs lit before you
turn on the DS3950 storage subsystem.
In addition, consider the following items:
v
The storage subsystem supports simultaneous power-up of the system
components; however, you should always follow the power-up
sequence listed in the “Turning on the storage subsystem section” of
the
DS3950 Storage Subsystem Installation, User's, and Maintenance Guide
during any attended power-up procedure.
v
A storage subsystem in an optimal state should recover automatically
from an unexpected shutdown and unattended simultaneous
restoration of power to system components. After power is restored,
contact IBM technical support if any of the following conditions occur:
– The storage subsystem logical drives and subsystems do not
display in the DS Storage Manager graphical user interface (GUI).
– The storage subsystem logical drives and subsystems do not come
online.
– The storage subsystem logical drives and subsystems seem to be
degraded.
4. Turn on the power to each device, based on the startup sequence.
Note: All of the EXP395 storage expansion enclosures must be powered on
before the DS3950 storage subsystem.
5.
The green LEDs on the front and the back of the EXP395 and DS3950 storage
subsystem should remain lit. If other amber Fault LEDs light, see “Solving
problems” on page 93.
Recovering from an overheated power supply and fan unit
Each EXP395 storage expansion enclosure contains two power supply and fan
units. Each power supply and fan unit contains a built-in temperature sensor
designed to prevent it from overheating. Under normal operating conditions, with
an ambient air temperature range of 5° - 40° C (41 - 104° F), the fans in the power
supply and fan units maintain a proper operating temperature inside the module.
If the internal temperature reaches 65° C (149° F), the power supply shuts down
automatically. If both power supplies shut down because of overheating, the
module has no power, and all indicator lights are off.
The following factors can cause the power supplies to overheat:
v
An unusually high room temperature
v
Fan failures in the power supply and fan units
v Defective circuitry in the power supply
v
Blocked air vents
v Failures in other devices in the configuration or cabinet
If a fan failure causes overheating or the operating environment becomes too hot
(greater than 55° C), the Global Fault LED on the storage expansion enclosure
turns on. The power supply and fan unit Fault and Service Action Allowed (SAA)
LEDs on the back of the storage expansion enclosure also turn on. “Rear LEDs” on
page 53 shows the location of these LEDs.
Chapter 4. Operating the EXP395
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