HP StorageWorks 2300 Disk System - Manual (Page 36)

36 Installation
Preparation
Before installing the disk system, make sure (1) electrical wiring, breakers, and
PDUs meet power needs, (2) the required support software is installed on the
host, and (3) if you are connecting the disk system to a V-class server, auto-
termination is enabled on the host bus adapter. This section covers all three of
these topics.
Electrical Requirements
All electrical wiring to the service point (plug) must be sized to carry the
appropriate inrush (20 amps per power supply) and steady state currents. See
Table 1 for examples.
Table 2 Maximum Operating Current
Caution Adding disk systems to 120V circuits rapidly increases amp
requirements. Always make sure that the total current drawn does
not exceed circuit capacity.
Table 1 Inrush (Surge) Current and Duration
No. of Disk Systems
on Circuit (2 power
supplies per disk system)
Inrush Current and Duration
1 40 amps declining over 100 ms (5 cycles)
2 80 amps declining over 100 ms (5 cycles)
3 120 amps declining over 100 ms (5 cycles)
4 160 amps declining over 100 ms (5 cycles)
Incoming Voltage
AC RMS
Maximum RMS Current Drawn by One Disk
System
100 – 120 volts 4.8 amps
200 – 240 volts 2.0 amps