Hitachi HUS VM - Data Cabling; Block Module

• Cable length for host I/O modules
The following table lists the cable length requirements for the host I/O
modules in the HUS VM storage system.
Table 4-11 Maximum cable length (shortwave)
DataTransfer
Rate
OM1(62.5/125 f/m
multi-mode fiber)
OM2(50/125 f/m
multi-mode fiber)
OM3(50/125 f/m laser
optimizedmulti-mode fiber)
MB/s feet / meters feet / meters feet / meters
200 492.1 / 150 984.3 / 300 1640.4 / 500
400 229.7 / 70 492.1 / 150 1246.7 / 380
800 68.9 / 21 164 / 50 492.1 / 150
• External data storage
If you plan to attach external storage to the HUS VM storage system, be sure
to include the appropriate power and space requirements in your planning.
Data cabling
This section provides basic cabling diagrams for connecting ENC (data and
control) cables between the control chassis and the drive trays in the block
module, and between the controller and HNAS storage in the file module.
Block module
This diagram shows the cabling from the controller to the DBS drive tray (24
SFF drives).
Site preparation
4-17
Hitachi Unified Storage VM Block Module Hardware User Guide