User guide

Site preparation 4–9
Hitachi Unified Storage VM Block Module Hardware User Guide
Electrical specifications
The following table lists the electric power requirements and approximate
power consumption of a typical HUS VM storage system. Detailed electrical
specifications are located in Specifications on page A-1.
Table 4-7: HUS VM electric power requirements
1
Table 4-8: System power consumption, single phase current
Grounding
The site and site equipment must meet all of the following three grounding
requirements.
Note: The current and power specifications in the following tables were
measured on a HUS VM system in a controlled environment. To calculate
the power draw, current draw, and heat output of a specific system, see
Table 4-10: HUS VM component specifications on page 4-13 or (easier) use
the Power and Weight calculator at the following URL.
http://www.hds.com/go/weight-and-power-calculator/
Contact technical support if you need assistance using this tool.
Phase Voltage Frequency
AC, single phase
2 wire + ground
200 V -8% min 240 V +6% max 50 ±3 Hz
60 ±2 Hz
AC, three phase delta
See Table 4-9: PDU plugs,
circuit breakers, and receptacles
on page 4-10 for connections.
208 V
+5/-15%
50/60 Hz
Note 1: See Electrical specifications on page A-4 for detailed voltage and power requirements.
Configuration
Standby2 Idle3
Max Power
Consumption
Current per rack
(KW)
5,6
Current per rack
(KW)
5,6
Current per rack
(KW)
5,6
one rack (with control chassis) To be provided To be provided To be provided
two racks, fully loaded To be provided To be provided To be provided
three racks, fully loaded To be provided To be provided To be provided
Total Power To be provided To be provided To be provided
Notes:
1. Data taken from measurements on a HUS VM storage system in a controlled environment.
2. Standby condition - AC power on but DC power to controller and drives is off.
2. Idle condition - system is powered on but not being accessed
3. Max power consumption - all disks are in write mode.
4. Total 1152 3 TB SAS drives.
5. power Factor 0.96
6. Voltage 210 VAC