SC280 Expansion Enclosure Overview
The SC280 is a 5U SAS expansion enclosure that supports up to 84 internal 3.5‐inch hard drives installed
in a two‐drawer, three‐row, 14‐column configuration.
The SC280 expansion enclosure ships with two redundant power supply units, five redundant cooling
fans, and two redundant enclosure management modules (EMMs).
SC280 Expansion Enclosure Front-Panel Features and Indicators
The SC280 front panel displays the expansion enclosure status.
Figure 22. SC280 Expansion Enclosure Front-Panel Features and Indicators
Item Name Panel Description
1 Drawer-specific
anti-tamper locks
Locks the drawer shut using a Torx T20
screwdriver until the red arrows point to the
locked icon (away from the center of the
chassis).
2 Drawer-specific
left and right side
status indicators
• Sideplane OK/Power Good
– Off — Sideplane card or cable fault
– Green — Sideplane card and cable are
functional (though a fault may be
indicated by one or more of the
following LEDs)
• Drawer Fault
– Amber — Sideplane card fault or drive
failure causing loss of availability or
redundancy
• Logical Fault
– Amber (steady) — Host indicated drive
fault
About the SC4020 Storage System
29
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