Item Name Icon Description• On steady amber: Hardware detected fault• Blinking amber: Software detected fault3 IdentificationbuttonLights when the storage system identification is enabled.• Off: Normal status• Blinking blue: Storage system identification enabled4 Unit ID display — Displays the storage system identification number. The defaultvalue for a new storage system is 01.5 Hard drives — Can have up to 12 3.5-inch or 24 2.5-inch SAS hard drives.SCv2000/SCv2020 Back-Panel Features and IndicatorsThe back panel of the SCv2000/SCv2020 contains the storage controller indicators and power supplyindicators.Figure 7. SCv2000/SCv2020 Back-Panel ViewItem Name Icon Description1 Power supply/cooling fan module(PSU) (2)— Contains a 580 W power supply and fans that provide coolingfor the storage system.2 Battery backup unit(BBU) (2)— Allows the storage controller to shut down smoothly when aloss of AC power is detected.3 Storage controller(1 or 2)— Each storage controller contains:• Back-end ports: Two 6 Gbps SAS ports• Front-end ports: Fibre Channel ports, iSCSI ports, or SASports• MGMT port: Embedded Ethernet/iSCSI port that is typicallyused for system managementNOTE: The MGMT port can share iSCSI traffic if theFlex Port license is installed.16 About the SCv2000/SCv2020 Storage System