Step 9 - Connecting the power cords
Use the following information to connect the power cords in your storage array.
Things to know - AC power cords
• For each AC power connector on the drive tray, make sure that you use a separate power source in
the cabinet. Connecting to independent power sources maintains power redundancy.
• To ensure proper cooling, do not operate a drive tray with one of its power supplies removed,
unless instructed to do so by the Recovery Guru.
• You can use the power cords shipped with the controller-drive tray with typical outlets used in the
destination country, such as a wall receptacle or an uninterrupted power supply (UPS). These
power cords, however, are not intended for use in most EIA-compliant cabinets.
Things to know - DC power cords
Warning: (W14) Risk of bodily injury – A qualified service person is required to make the DC
power connection according to NEC and CEC guidelines.
• DC power cable
1
Supply (negative), brown wire, –48 VDC
2 Return (positive), blue wire
3 Ground, green/yellow wire
4 DC power connector
• Each power-fan canister has two DC power connectors. Be sure to use a separate power source
for each power-fan canister in the drive tray to maintain power redundancy. You can, optionally,
connect each DC power connector on the same power-fan canister to a different source for
additional redundancy.
• A two-pole 30-amp circuit breaker is required between the DC power source and the drive tray
for over-current and short-circuit protection.
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