Hardware options installation 97
CAUTION: After the node is powered down, wait for 30 seconds, and then check the amber
LED before unplugging the cable from the cache module. If the amber LED flashes after 30
seconds, do not remove the cable from the cache module. The cache module is backing up
data. Data will be lost if the cable is detached when the amber LED is still flashing.
Storage controller installation guidelines
To maintain optimal thermal conditions and efficiency, Hewlett Packard Enterprise recommends the
following guidelines:
• Install one storage controller per node.
• The HPE H240/H241 host bus adapter or HPE P440/P441 Smart Array controller can be installed in
slot 1 or slot 2.
IMPORTANT: The HPE Apollo r2800 Chassis does not support nodes using the HPE
Dynamic Smart Array B140i Controller or the HPE P840 Smart Array Controller. Hewlett
Packard Enterprise recommends installing an HPE H240 Host Bus Adapter or HPE P440
Smart Array Controller.
• The HPE P840 Smart Array controller can only be installed in slot 2 of the FlexibleLOM 2U node riser
cage assembly (PN 798184-B21)
For more information on the riser board slot specifications, see "PCIe riser board slot definitions (on page
26)."
For information on drive bay mapping in the HPE Apollo r2800 Chassis and the factory default
configuration, see "Drive bay mapping for the HPE Apollo r2800 Chassis (on page 65)."
For more information about product features, specifications, options, configurations, and compatibility,
see the product QuickSpecs on the Hewlett Packard Enterprise website (http://www.hpe.com/info/qs).
Installing the HPE Smart Storage Battery
To install the component:
1. Power down all nodes ("Power down the node" on page 32).
2. Disconnect all peripheral cables from the nodes and chassis.
3. Remove all nodes from the chassis ("Remove the node from the chassis" on page 32).
4. If installed, remove the security bezel (on page 35).
5. Remove all drives ("Removing the drive" on page 35).
6. If installed, remove the RCM module (on page 34).
7. Remove all power supplies ("Remove the power supply" on page 34).
8. Remove the chassis from the rack (on page 38).
9. Remove the access panel ("Remove the chassis access panel" on page 36).
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