IBM Small J10 Series, Руководство пользователя

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PSUs are hot-pluggable, and replacement should only take a few seconds to do. Replacement must be
completed as soon as possible after the removal of the defective PSU to avoid a thermal exception. The
replacement procedure should be completed within an absolute maximum of three minutes.
Important:
Operation of the enclosure with any modules missing will disrupt the airflow, and the disks will not
receive sufficient cooling. It is essential that all slots are fitted with PSUs prior to powering on the
enclosure.
System airflow
The system must be operated with low pressure rear exhaust installation. Back pressure created by rack
doors and obstacles is not to exceed 5 pascals (0.5mm water gauge). The cooling system provides
sufficient capacity to ensure that maximum temperatures are not exceeded.
I/O module
Overview
This user guide describes the 12Gb/s SAS I/O module. Blank modules must be put in all empty SBB slots.
Figure 8. 12Gb/s SAS I/O Module
The system operates from one module with a dummy module providing airflow control in the other slot.
Module presence is checked against the (initial power-on) configuration to determine invalid configuration
conditions.
Chapter 2. System overview 9