User guide

Site preparation 4–17
Hitachi Unified Storage VM Block Module Hardware User Guide
Operational requirements
The operational requirements for the HUS VM include:
• LAN for Storage Navigator
Storage Navigator communicates with the HUS VM storage system over a
LAN to obtain system configuration and status information and send user
commands to the storage system. Storage Navigator serves as the
integrated interface for all resource manager components.
• 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 4-12: Maximum cable length (shortwave)
Figure 4-5: Service Clearances, single rack system
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