HPE Nimble Storage HF Series Hardware Manual page 98

Information required:
Tools required:
Support contact:
HPE recommends using the Maintenance Window functionality within the HPE InfoSight portal to inform HPE Support of
upcoming maintenance windows.
Refer to https://infosight.hpe.com/dashboards/nimble/wellness/maintenance-windows for more information.
You can disable automated support case generation during planned maintenance from the Manage Maintenance Windows
page. After a maintenance window is set, no further communication with HPE Support is required.
The expansion shelf serial number label is located above Expander A.
1 Expander A
Note:
Be sure to identify the correct expansion shelf by its serial number.
Be sure to identify the correct expander (A or B) as the one that has
failed.
If the incorrect expander is removed, an unplanned failover occurs.
Procedure
1. Prepare the array for expander replacement.
a) Log in to the array using the CLI.
Type ctrlr --list --array array_name to determine which controller is in Active mode (A or B).
b) If the controller in Active mode is in the same path as the failed expander, perform a manual failover:
Type failover array_name
ctrlr --list --array array_name to verify that the manual failover placed the controller in Standby mode.
RMA (Return Material Authorization) work order
Case number
Expansion shelf serial number
The expansion shelf serial number can be found on the back of the expansion shelf.
ESD (electrostatic discharge) strap or appropriate grounding device
See Support.
2 Expander B
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Maintenance Procedures 98