Chapter 11 In-service field maintenance for 5Uenclosures 105
Figure 82 Safety lock to release left drawer slide rail of lower drawer
b. Pressing simultaneously inward, begin sliding the drawer back into place until the safety lock clears the
opening.
c. Placing the heels of both palms against the face of the drawer near the anti-tamper locks, exert even
inward pressure until the drawer is almost flush with the rack ear flanges.
d. Simultaneously press inward and hold both drawer pull handles as you push the drawer closed until it
fully latches.
5. Verify that the fault LED on the replaced DDIC is off after properly inserting and seating it in the empty slot.
6. Facing the front of the storage enclosure, verify that the
Power On
LED is green and there are no fault
conditions.
Replace a 5U enclosure controller module
Both controller modules (CMs) manage the flow of data to and from the storage enclosure. Each CM provides
a very specialized, solutions-specific interaction that depends on your system configuration and software
implementation, including SAS zoning, failover and failback procedures, and multipath procedures.
An important feature of the storage enclosure design is redundancy. The storage enclosure will maintain
continuous operation during the replacement of a single CM as long as it is within the time limit of 7 minutes,
since removing a CM significantly alters airflow in the storage enclosure.
CAUTION If you remove any FRU while the storage enclosure is powered up, you must replace it with a
tested good spare within the allotted time for that FRU. If you do not replace the FRU within the identified time
limit, you void the product warranty and the storage enclosure might overheat, causing equipment failure and
possible data loss.
CAUTION Do not remove covers from any FRU. There is a danger of electric shock inside. Return the
FRU to your supplier for repair.
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