Caution, to avoid overheating your storage system,
you have 30 minutes to replace the repaired controller node,
once the controller node has been removed from its bay.
Attach your ESD wrist strap to an unpainted surface
of the enclosure or rack.
Caution, to prevent data loss,
confirm that the SAS data cabling provides a redundant path
to all of the enclosures from the healthy node.
Confirm that the UID Locate LED is solid blue
on the node to be removed.
This indicates that it is safe to remove.
Confirm that all the cables attached to the node
are labeled, noting their locations.
If not labeled, label them with node,
slot, and port information.
Remove the Ethernet cable from the MGMT port
by pressing the release tab and disconnecting the cable.
Remove all fiber cables by pulling out
the long tab underneath the SFP and disconnecting the SFP
with the fiber cables attached.
Remove SAS cables by grasping the cable connector,
pushing inward while pulling the long tab
above the connector to release the cable from the port,
and then disconnecting the SAS cable.
Fully loosen both captive thumb screws that secure
the controller node handles to its enclosure bay.
If too tight, use a Torx T15 screwdriver to loosen.
Open both controller node handles simultaneously
to disengage the node from the enclosure backplane,
and partially slide the node out of its bay.
Caution, the node is long and heavy.
Be prepared.
While making sure that all cables are out of the way,
support the node from underneath and carefully slide it
out of its bay in the node enclosure.
Place the removed node
onto the flat anti-static surface nearby.
Remove the top cover by pressing
the black plastic release tabs on both sides
of the top cover near the rear.
Slide it back until it stops,
and lift the top cover up and off the node.
Note, on the inside cover of the node you will find a map
that displays the locations of the Boot Drives,
DIMMs, and Node Coin Battery.
Locate the Node Coin Battery.
Gently pull back the hook bracket that secures
the Coin Battery just enough to access the battery.
Caution, take care not to bend the hook bracket too far.
Lift the Coin Battery up and out of its holder.
With its positive side facing the hook bracket,
insert the replacement coin battery into its holder
with the hook bracket over the battery securing it in place.
Confirm that the Coin Battery is firmly in place.
Replace the top cover by aligning the tabs
in the front of the cover with the notches
in the front of the chassis, lower the cover,
and slide it forward to secure.
Caution, clear the area in front of the empty bay
of any cables that might get snagged or damaged
during re-installation of the controller node.
With its release levers in their open position,
carefully align and slide the node into its bay
until its release levers begin to engage.
Close the release levers to fully seat the node
into the enclosure backplane.
Fully tighten both thumbscrews to secure
the node to the enclosure.
Replace all the cables that were removed earlier,
making sure that each cable is in the same location
and fully connected.