Filter
Top Products
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 9176/D173 D
ISK SUBSYSTEM - SITE PREPARATION GUIDE
AC Power Requirements - 9176 Disk Controller
Assuming a 70% power supply efficiency and a 0.99 Power Factor, the following
specifications apply to a fully configured 9176 Disk Controller.
Table 8 Additional Power Ratings/Specifications
NOTE When we take actual readings, we discover that the actual current is slightly less
than the rating plate. This ensures that we never understate current and power
consumption, especially with various unknowns. As shown above, the actual
maximum operating power is slightly less than the maximum operating current
multiplied by the current (220V times 1A=220VA), however, when calculating
the maximum operating power, we recommend that you use the KVA figures
shown in Table 10 and Table 11.
StorageTek 9170 Disk Array and D173 Disk Controller Array
The 9170/D173 drive tray is a 120/220 VAC, 50/60 Hz unit that meets standard voltage
requirements for domestic and international operation. It uses standard industrial wiring
with a line-to-neutral power connection (see Table 9). When installing a 9170/D173 (drive
tray), review the following specifications.
•
Earth ground - The drive tray requires an earth ground conductor on the AC power
source.
•
AC power source - The AC power source must provide the correct voltage, current,
and frequency specified by the manufacturer. If you plug the drive tray into an internal
AC distribution unit, make sure the internal unit can handle the power requirements.
•
Redundant AC Power, nominal 100 volt - In order to meet power requirements and
maintain power redundancy, you should connect the drive tray to 90–136 volt, 15 Amp
circuits with:
•
three or fewer drive trays - using two, 90–136 volt, 15 Amp circuits. On each
9170, connect one power supply to one circuit and the other power supply to a
second circuit.
Parameter 110 volt 220 volt
Min. Operating Current 2.0 A 1.0 A
Max. Operating Current 2.0 A 1.0 A
Max. Surge Current 3.0 A 2.0 A
Max. Operating Power .1925 KVA, 192.5 Watts (AC), 657.5 BTU/HR