A-2 DAE2P/DAE3P Hardware Reference
Technical specifications
Enclosure specifications
Technical enclosure specifications include power requirements, size,
drive, interface, and standards information.
AC power
requirements
The input current, power (VA), and dissipation per DAE2P/DAE3P
are based on the requirements that a maximum enclosure
configuration places on the power supplies and cooling system to
provide internal regulated power. Typical values will be less,
depending on the number and manufacturer of disk modules. These
values represent either
◆ the values for a single power supply line cord, or
◆ the sum of values shared by the line cords of two power supplies
in the same DAE2P/DAE3P, with the division between the line
cords and supplies at the current sharing ratio (approximately
50% each).
A failure of one of the two power supplies in the enclosure results in
the remaining supply and cord supporting the full load. You must
use a rackmount cabinet with AC power distribution, and have main
branch AC distribution that can handle these values for each disk
enclosure in the cabinet.
* Ratings assume a fully configured DAE2P/DAE3P that includes two power supplies,
two LCCs, and 15 disk drives.
Table A-1 DAE2P/DAE3P AC power specifications
Requirement Description *
AC line voltage 100 to 240 V AC +
10%, single phase, 47 to 63 Hz
AC line current 4.4 A at 100 V ac, 2.2 A at 200 V ac
Power consumption 440 VA(425 W) max (fully configured)*
Power factor 0.98 min at full load, low voltage
Heat dissipation 1.53 x10
6
J/hr (1,450 BTU/hr) max
In-rush current 50 A max for 1/2 line cycle, per power supply at 240 V ac
25 A max for 1/2 line cycle, per power supply at 120 V ac
Startup surge current 15 A pk (10.6 A rms) max for 100 ms, at any line voltage
AC protection 10 A fuse in each power supply, both phases
AC receptacle type IEC320-C14 appliance coupler, per power supply
Ride-through time 30 ms min
Current sharing 60% max, 40% min, between power supplies
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