Hitachi G200 - AC Power Cables

• Keep cables away from sharp edges or metal corners.
• When bundling cables, do not pinch or constrict the cables.
• Do not use zip ties to bundle cables. Instead, use Velcro hook-and-loop
ties that do not have hard edges and which you can remove without
cutting.
• Never bundle network cables with power cables. If network and power
cables are not bundled separately, electromagnetic interference (EMI) can
affect your data stream.
• If you run cables from overhead supports or from below a raised floor,
include vertical distances when calculating necessary cable lengths.
• If you use overhead cable supports:
○ Verify that your supports are anchored adequately to withstand the
weight of bundled cables.
○ Gravity can stretch and damage cables over time. Therefore, do not
allow cables to sag through gaps in your supports.
○ Place drop points in your supports that permit cables to reach racks
without bending or pulling.
Cabling full-width modules
When cabling full-width modules, route the cables horizontally, so that they
do not interfere when replacing a module.
Ensuring adequate airflow
Bundled cables can obstruct the movement of conditioned air around your
storage system.
• Secure cables away from fans.
• Keep cables away from the intake holes at the front of the storage system.
• Use flooring seals or grommets to keep conditioned air from escaping
through cable holes.
Preparing for future maintenance
Design your cable infrastructure to accommodate future work on the storage
system. Give thought to future tasks that will be performed on the storage
system, such as locating specific pathways or connections, isolating a fault,
or adding or removing components.
• Purchase colored cables or apply colored tags.
• Label both ends of every cable to denote the port to which it connects.
AC power cables
Utility AC power standards for connector types and voltage levels vary by
country. Hitachi provides a variety of power cables that facilitate using
storage systems around the world. Hitachi power cables meet the safety
standards for the country for which they are intended.
104 Data and power cables
Hitachi Virtual Storage Platform G200 Hardware Reference Guide