14. Check the input and output bypass LEDs at both ends of the reconnected
cables. If the input and output bypass LEDs are lit, reconnect the cables and
SFP modules.
15. Use the DS Storage Manager Client to open a Subsystem Management
window to the DS4000 on which the EXP810 ESM was replaced. Click on the
Recovery
Guru
or the
Environment
Status
icon of the drive expansion
enclosure on which you replaced the ESM.
If there is an ESM firmware mismatch, wait up to 15 minutes for the DS4000
Client program to perform ESM code synchronization.
Note:
The ESM firmware download will take up to 5 minutes in typical
workload condition.
If there is no ESM firmware mismatch, the upgrade process is complete.
16. If there is an ESM firmware mismatch, you must make corrections to match
the ESM firmware by using the ESM firmware download function in the DS
Storage Manager Client Subsystem Management window.
Replacing
an
SFP
module
The speed of the SFP module determines the maximum operating speed of the
fibre channel port in which the SFP is installed. For example, a 2-Gbps SFP that is
plugged into a 4-Gbps-capable port will limit the speed of that port to a maximum of
2 Gbps.
Attention:
Refer to the FRU option P/N on the SFP to identify the maximum
operating speed of the SFP and to request the correct FRU replacement.
Use the following procedure to replace a Small Form-factor Pluggable (SFP)
module on the storage expansion enclosure. The SFP module shown in this
procedure might look different from those you are using, but the difference will not
affect functionality. Figure 57 on page 119 illustrates installing an SFP module.
Electrostatic discharge can damage sensitive components. To prevent electrostatic
discharge damage to the storage expansion enclosure, use proper antistatic
protection when handling components.
1. Use the DS Storage Manager client software to print a new storage subsystem
profile.
2. Using the Recovery Guru, identify the failed component that needs to be
replaced.
3. Check the Fault LEDs to locate the failed SFP module. If a fault is detected,
the amber Fault LED is on.
Attention:
Potential
loss
of
data
access
- To prevent loss of access to
data, remove only the SFP module that has a failed status in the storage
management software and has Port Bypass LED lit.
4. Put on antistatic protection.
5. Unpack the new SFP module. Verify that it is the same type of module you are
replacing. If it is not, contact IBM Customer and Technical Support.
118
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide
Summary of Contents for DS4000 EXP810
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