Hitachi E790 - Step 3: Connect the storage system to power

Number Item
1 Bind screws
Step 3: Connect the storage system to power
The storage system's input voltage is auto-adjusting for 100-120 (+6%) / 200-240 (-11%)
VAC, 50-60 Hz power connections. Power is provided through two power supplies, one
per controller.
For best practice, establish power redundancy by routing each power supply to
independent PDUs and then routing the PDUs to separate external power sources on
dierent branch circuits. This arrangement enables the storage system to continue
operating if AC power is lost to one power supply.
Note: Multiple outlets in a PDU or power strip do not constitute an
independent electrical source.
Procedure
1. Conrm that all power sources are o.
2. Connect an AC power cable to the power receptacle on the rear of each controller.
3. Route the power cables from each controller to separate PDUs, and then use the
pre-installed tie wraps at each controller power receptacle to secure the power
cables.
4. Connect the PDUs to separate external power sources on dierent branch circuits.
Note: To prevent the storage system from being turned o by accident,
make sure the external power sources are not controlled by a wall
switch.
Step 3: Connect the storage system to power
Installing your VSP E590 and VSP E790 storage system
Hitachi Virtual Storage System E590, E790 Installation Guide 7