1
About the SC400/SC420 Expansion
Enclosure
An SC400/SC420 expansion enclosure provides expansion storage for an SC9000 storage system.
The SC400/SC420 connects directly to the SAS ports on the back of the storage system.
SC400/SC420 Expansion Enclosure Overview
The SC400 is a 2U expansion enclosure that supports up to 12 3.5
‐
inch hard drives installed in a four
‐
column, three-row configuration. The SC420 is a 2U expansion enclosure that supports up to 24 2.5
‐
inch
hard drives installed vertically side by side.
An SC400/SC420 expansion enclosure ships with two redundant power supply/cooling fan modules and
two redundant enclosure management modules (EMMs).
SC400/SC420 Expansion Enclosure Monitoring and
Diagnostics
The Storage Center OS generates alert messages for temperature, I/O module, fan module, disk, and
power conditions for Storage Center components. Use the Dell Storage Client to view these alerts.
The SC400/SC420 also has LED indicators to notify you of possible problems with the expansion
enclosure.
NOTE: Dell OpenManage Server Administrator is not available for the SC400/SC420.
SC400/SC420 Expansion Enclosure Front-Panel Features
and Indicators
The SC400/SC420 front panel shows the expansion enclosure status and power supply status.
Figure 1. SC400 Front-Panel Features and Indicators
About the SC400/SC420 Expansion Enclosure
7
