Hitachi VSP User and Reference Guide
A–4
Specifications
Table A-3 VSP Electrical specifications. three phase current
Table A-4 Power consumption, single phase current (HDDs)
Item Unit Specification
Power requirements AC, 3 Phase delta 208 V +5/-15%, 50/60 Hz
Power consumption
.
NOTE: The power 
consumption of the 
system is the same 
whether it uses single 
phase or three phase 
power. The difference is 
that each branch of the 
three phase input power 
draws less current than 
the single phase 
conductors.
Drive chassis
 (240 HDD)
4.3KVA (2.5" SAS)
5.7KVA (3.5” SATA)
Maximum 41.4 KVA
Controller chassis power 
supply
Input Current 7.18 A
Steady Current 3.59 A
Leakage Current 0.28 mA
Inrush current 1st (0-p) 20 A
2nd (0-p)
1st (0-p) Time
 (-25%: 80 ms
Drive chassis
power supply
Input Current 6.52 A
Steady Current 3.26A
Leakage Current 0.28 mA
Inrush current 1st (0-p) 20 A
2nd (0-p)
1st (0-p) Time 
(-25%: 80 ms
Configuration
1
 Idle
2
Max Power 
Consumption
3, 5
Current per rack Current per rack
R00 (module 0 controller
4
17.3 19.6
R10 (module 1 controller
4
18.2 17.9
R01 (module 0 drive 1)4 14.8 18.3
R11 (module 1 drive 1)4 16.1 19.6
R02 (module 0 drive 2)4 17.2 17.1
R12 (module 1 drive 2)4 14.4 18.6
Total Power 98 111.1
Notes:
1. The numbers in this table were provided by measuring system power consumption in a controlled 
environment. Depending on the air temperature and actual voltage where the system is installed, 
current draw can vary as much as + or - 10%. To calculate power draw for a specific system, use the 
Power and Weight calculator at. http://www.hds.com/go/weight-and-power-calculator/ Contact 
technical support if you need assistance using this tool.
2. Idle condition - system is powered on but not being accessed.
2. Max power consumption - all disks are in write mode.
3. R00 and R01 are controller racks with one controller chassis and two drive chassis.
4. R01, R02, R11, and R12 are drive racks with three drive chassis each. 
5. Configured with the maximum of 2048 146 GB SAS drives.