Item Control/Feature Icon Description
• Amber (flashing) — PSU firmware is downloading
3 AC fault+
• Amber (steady) — AC power is not detected
• Amber (flashing) — PSU firmware is downloading
4 Power OK
• Green (steady) — This PSU is providing power
• Green (flashing) — AC power is present, but this
PSU is in standby mode (the other PSU is providing
power)
5 Power outlet — Power outlet for the storage system.
6 Power switch — Controls power for the storage system.
If all three LEDs are in the same state, the following separate and unique conditions are indicated:
• If all three LEDs are off, then there is neither PSU has AC power.
• If all three LEDs are on, then the General Enclosure Management (GEM) software has lost
communication with the PSU.
SC280 Expansion Enclosure Drives
Dell Enterprise Plus hard disk drives (HDDs) and Dell Enterprise solid-state drives (eSSDs) are the only
drives that can be installed in SC280 expansion enclosures. If a non-Dell Enterprise Plus drive is installed,
the Storage Center prevents the drive from being managed.
Each drive is installed in a Disk Drive In Carrier (DDIC), and each DDIC includes one status indicator.
Figure 27. DDIC and Status Indicator
Item Feature Indicator Code
1 DDIC fault indicator Amber — Drive fault
Amber (flashing) — Flashes in 1–second intervals when the
drive or enclosure indicator is enabled
34
About the SC4020 Storage System
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