IBM TotalStorage SAN256N Director 2045-N16, Installation And Maintenance Manual, Page: 62 / 157

SAN256N Director 2045-N16
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Supplying AC power to the SAN256N director
1. Verify that the SAN256N power supply switches are set in the 0 (Off) position.
2. Verify, using a voltmeter, the customer’s AC voltage from the AC power source is
between 200 VAC and 240 VAC and is single phase. Also, verify the circuit breakers
for each line (A and B) are 20 amp breakers, and that when circuit breakers are
turned Off, the AC voltage measurement indicates zero (0) volts.
3. Verify that the customer’s AC power source circuit breakers are set to the Off
position.
4. Verify that the correct power plug has been installed at the ends of the two SAN256N
director AC power cords.
5. Verify that access to the customer’s AC power receptacles and SAN256N director AC
power receptacles are not restricted so service technicians can easily disconnect the
AC power cords.
6. Route and connect the two 6-foot power cords of the SAN256N director to the
customer’s AC power receptacles.
7. Mark or tag the customer’s receptacles to indicate which line cord, Line A or Line B,
is connected to which receptacle.
Powering on the SAN256N director
Use the following procedure to turn on power to the SAN256N director.
1. Verify that the customer’s AC power source circuit breakers that are supplying power
to the SAN256N director are set to ON.
2. Verify that the AC power cord plug(s) are tightly connected to the AC Input recessed
receptacles on the power supplies, located at the rear of the SAN256N chassis. The
AC indicators should be lit green, and the DC indicators should be lit red on each
power supply.
Attention: Do not apply AC power to the SAN256N director at this time.
Attention: Refer to safety notices before starting an installation.
R001
Attention: Refer to safety notices before starting an installation.