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Attention
Never
remove the interconnect-battery unit unless directed to do so by an IBM
support representative. Removing the interconnect-battery unit after a
controller or a power supply and fan unit has already been removed results in
a loss of data access. Refer to “Replacing the interconnect-battery unit” on
page 187 for complete information about the conditions required for safe
removal of the interconnect-battery unit.
Do not
replace the
interconnect-battery unit without first meeting the requirements described in
“Replacing the interconnect-battery unit” on page 187.
Information about the condition of the interconnect-battery unit is conveyed by
indicator LEDs on the front of interconnect-battery unit. (“Interconnect-battery unit
LEDs” on page 154 identifies the indicator LEDs on the interconnect-battery unit
and explains the conditions that each LED indicates.)
You must remove the front bezel in order to see all of the interconnect-battery unit
LEDs. With the bezel in place, only the following interconnect-battery unit LEDs are
visible:
v
Power
v
Overall DS5100 and DS5300 Configuration Needs Attention
v
Locate/Identify
Note:
The displayed order of the Overall DS5100 and DS5300 Configuration
Needs Attention and Locate/Identify LEDs on the interconnect-battery unit
are reversed when the bezel is removed. See “Front bezel LEDs” on page
144 and “Interconnect-battery unit LEDs” on page 154.
SFP modules
The storage subsystem supports fiber-optic interface cables. You must install a
Small Form-factor Pluggable (SFP) module in each interface connector on the
controller where a fibre optic cable is to be installed. Do not install an SFP in any
port that will not have a fibre optic cable attached. Additionally, it is best practice
that you remove any SFP from any port that does not have fibre optic cables
attached.
Figure 9 on page 23 shows an SFP module with fiber-optic cable. Note that the
SFP module shown might look different from those shipped with your unit. The
differences do not affect module performance.
Attention:
Currently, the DS5100 and DS5300 supports only
short-wave/multimode SFPs. In DS5100 and DS5300 configurations, you may use
long-wave SFPs only in fibre channel switches that connect DS5100 and DS5300s
over long distances. In addition, there are not any visual markings to identify the
maximum operating speeds of the SFPs aside from the option and FRU part
number on the SFP label.
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IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User’s, and Maintenance Guide