Hardware options installation 72
IMPORTANT:
High power PCIe cables report power allocation information used by the server
to calculate power supply redundancy rules. For the server to calculate the accurate number of
power supplies needed, use the lowest wattage power cable possible for the high- powered
PCIe card.
For example: if a user installs a 150-W PCIe card in the server and connects it to a 300-W
power cable, the server calculates the power needed as 300 watts instead of the 150 watts the
card uses. This situation results in the server requiring more power supplies than needed for
operation or redundancy when, in fact, the server may be sufficient with fewer power supplies.
Hewlett Packard Enterprise recommends fully populating the server with power supplies when
using high power PCIe cards.
6. Connect the power cable.
7. Install the access panel.
8. Install the server into the rack ("Installing the server into the rack" on page 38).
9. Connect each power cord to the server.
10. Connect each power cord to the power source.
11. Power up the server ("Powering up the server" on page 24).
Drive option
When adding hard drives to the server, observe the following general guidelines:
• The system automatically sets all device numbers.
• If only one hard drive is used, install it in the bay with the lowest device number.
• Hard drives must be SFF types.
Drives should be the same capacity to provide the greatest storage space efficiency when drives are
grouped together into the same drive array.
For drive numbers, see "Drive bay numbering (on page 19)."
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