In-Service Field Maintenance; Table 15 Time Limits For Fru Replacement - Seagate Exos E 4U106 Installation And Maintenance Manual

6 In-service field maintenance

You may service the identified storage enclosure FRUs and still maintain continuous operation during the replacement, but
with two very important qualifiers:
You must determine whether your system allows for continuous operation during service replacement of the storage
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enclosure drive modules without interrupting access to enclosure file systems.
You must complete the replacement in the allotted time, replacing only one FRU at a time. The storage enclosure design
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provides for redundancy, so the loss of a single FRU does not impact functionality for a limited time.
The tasks identified in this chapter first cover FRUs in the main bay, followed by FRUs in the auxiliary bay, and finally, FRUs in
the rear panel area. It is absolutely essential you adhere to all safety precautions when servicing storage enclosure FRUs.
CAUTION If you remove any FRU while the storage enclosure is powered up, you must replace it with a known good
spare within the allotted time for that FRU. If you do not replace the FRU and, when applicable, close the related cover within
the identified time limit, you void the product warranty and the storage enclosure might overheat, causing equipment failure
and possible data loss.
CAUTION When performing maintenance on the storage enclosure or its components:
Observe the caution label affixed to each drive module or FRU prior to handling or replacing it.
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Do not remove a defective FRU until you have its functional replacement ready for insertion.
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To adhere to safety precautions when replacing a FRU in a storage enclosure:
1. Replace any defective FRU with a fully operational one as soon as possible.
2. Replace any defective FRU within the identified replacement time to minimize air loss and maintain optimum cooling within
the storage enclosure.

Table 15 Time limits for FRU replacement

Defective FRU
Main bay
Drive modules, LFF or SFF
SAS expander module
Auxiliary bay
Drive modules, LFF or SFF
Auxiliary bay fan module
Rear panel area
System fan module
Power supply unit
Controller module
Attachments
Rackmount rail kit
CMA and brackets
Cable kits: Standard HD mini-SAS to HD mini-
SAS (SF-8644)
AC power cord, compatible
3. Prevent electrostatic discharge from damaging the storage enclosure or its components.
Replacement time limit
Eight (8) minutes, including main bay cover replacement
Eight (8) minutes, including main bay cover replacement
Eight (8) minutes, including auxiliary bay cover replacement
Eight (8) minutes, including auxiliary bay cover replacement
Two (2) minutes
Six (6) minutes
Eight (8) minutes
N/A
N/A
N/A
N/A
Chapter 6 In-service field maintenance
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