Hitachi G800 Hardware Reference Manual page 100

Observing bend radius values
Never bend cables beyond their recommended bend radius. The following table provides
general guidelines for minimum bend radius values, but you should consult the
recommendation of your cable manufacturer.
Fibre Channel
iSCSI optical
Category 5 Ethernet
SAS
Protecting cables
Damage to your Fibre Channel and Ethernet cables can affect the performance of your
storage system. Observe the following guidelines to protect the cables:
Keep cables away from sharp edges or metal corners.
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When bundling cables, do not pinch or constrict the cables.
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Do not use zip ties to bundle cables. Instead, use Velcro hook-and-loop ties that do
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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
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bundled separately, electromagnetic interference (EMI) can affect your data stream.
If you run cables from overhead supports or from below a raised floor, include
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vertical distances when calculating necessary cable lengths.
If you use overhead cable supports:
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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
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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, such as NAS modules as shown in the following figure,
route the cables horizontally, so that they do not interfere when replacing a module.
Appendix F: Data and power cables
Hitachi Virtual Storage Platform G800 Hardware Reference Guide
Cable type
Managing data cables
Minimum bend radius
values
1.73 inch (40 mm)
1.73 inch (40 mm)
Four times the outside
diameter of the cable
1.73 inch (40 mm)
100