HP StorageWorks XP24000 Disk Array Site Preparation Guide, v01 (AE131-96002, June 2007)

The C-Track solution offers an internet connectivity option for the XP24000 in addition to a modem
connectivity option. If you choose the internet-based remote support solution, additional infrastructure
and site preparation are required. This additional preparation may include server and router
requirements, and HP and the customer may both have implementation responsibilities. For more
information about the C-Track internet-based solution, ask your HP representative.
Electrical requirements
The following text explains the electrical requirements of your site to support the HP system.
Line voltage
Line voltage (AC) at the wall power outlet is a function of the local power utility and your building
power distribution network. Voltages outside of the operating range of the HP system can cause
intermittent system errors or a complete system shutdown. If required, an HP representative and your
electrician can measure the available line voltage and make recommendations. See
“Electrical specifications for the HP XP24000 Disk Array” on page 47 for specific AC line voltage
requirements.
Avoid the use of a line voltage conditioner.
Make sure that a power distribution unit (if used) provides the correct voltage to support your entire
system.
Branch circuit breakers
See “Electrical specifications for the HP XP24000 Disk Array” on page 47 for specific branch circuit
requirements for your power situation.
Three-phase branch circuit breakers
The power cords supplied with each DKC or DKU configured for three-phase power are sized for
connection to a 30-amp circuit.
Single-phase branch circuit breakers
The power cords supplied with each DKC or DKU configured for single-phase power are sized for
connection to a 30- or 50-amp circuit.
Frequency
Usually, AC line frequency is determined by your local power providers. In some cases, electrical
power is supplied by generators. Shifts in AC line frequency can cause system errors. An HP
representative can monitor the frequency of the input AC line power and make recommendations, if
necessary. The HP system requires that the line frequency fall within these limits: 50 Hz ±3 Hz or 60
Hz ±2 Hz.
See “Electrical specifications for the HP XP24000 Disk Array” on page 47 for more information.
Site requirements for the HP XP24000 Disk Array42