Chapter 3. Replacing Ds4400 Storage Server Components; Handling Static-Sensitive Devices; Ds4400 Storage Server Controller - IBM TotalStorage DS4400 User Manual

Chapter 3. Replacing DS4400 Storage Server components

The DS4400 Storage Server contains two RAID controllers, a cooling system
containing four fans, mini-hubs, SFP modules, and a power system. This chapter
includes detailed instructions on replacing these components.

Handling static-sensitive devices

Attention:
avoid damage, keep static-sensitive devices in their static-protective package until
you are ready to install them.
To reduce the possibility of electrostatic discharge, observe the following
precautions:
v Limit your movement. Movement can cause static electricity to build up around
v Handle the device carefully, holding it by its edges or its frame.
v Do not touch solder joints, pins, or exposed printed circuitry.
v Do not leave the device where others can handle and possibly damage the
v While the device is still in its static-protective package, touch it to an unpainted
v Remove the device from its package and install it directly into your system unit
v Take additional care when handling devices during cold weather because heating

DS4400 Storage Server controller

The DS4400 Storage Server supports RAID technology. The DS4400 Storage
Server contains two RAID controllers.
Each controller comes in a removable, portable unit, called a controller CRU, as
shown in Figure 34 on page 43. Each controller CRU slides into one of two
controller slots on the front of the DS4400 Storage Server and attaches to hosts
through Fibre Channel connections. Two handles lock the controller in place. Each
controller slot has a controller slot designation that identifies the physical location of
the controller in the chassis: controller slot A (top) or controller slot B (bottom). Each
controller CRU has ten indicator lights: one power, one fault, and eight status
indicator lights, as shown in Figure 33 on page 42.
Attention:
the DS4400 Storage Server, label controllers A and B with the white tape dots that
are included in the rack mounting assembly kit. To prevent data loss, the controllers
must be installed into their original location.
© Copyright IBM Corp. 2005
Static electricity can damage electronic devices and your system. To
you.
device.
metal part of the system unit for at least two seconds. (This drains static
electricity from the package and from your body.)
without setting it down. If it is necessary to set the device down, place it in its
static-protective package. Do not place the device on your system unit cover or
on a metal table.
reduces indoor humidity and increases static electricity.
If you are removing both controllers (controller A and controller B) from
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