Owners Manual
Item Name Icon Description
• The identication LEDs on the storage controllers also blink, which allows users
to nd the storage system when looking at the back of the rack.
4 Hard drives — Can have up to 30 internal 2.5-inch SAS hard drives
SC5020 Series Storage System Back-Panel View
The back panel of the storage system contains the storage controller indicators and power supply indicators.
Figure 2. SC5020 Series Storage System Back-Panel View
Item
Name Icon Description
1 Power supply/cooling fan
module (2)
Contains power supplies and fans that provide cooling for the storage system, with
AC input to the power supply of 200–240 V. In Storage Manager, the power
supply/cooling fan module on the left side of the back panel is Power Supply 1 and
power supply/cooling fan module on the right side of the back panel is Power
Supply 2.
2 Storage controller (2) — Each storage controller contains:
• card with four SFP+ ports or four RJ45 10GBASE-T ports
• One expansion slot for a front-end I/O card:
– Fibre Channel
– iSCSI
– SAS
• SAS expansion ports – Two 12 Gbps SAS ports for back-end connectivity to
expansion enclosures
• USB port – Single USB 2.0 port
• MGMT port – Embedded Ethernet port for system management
• Serial port – Micro-USB serial port used for an alternative initial conguration
and support-only functions
3 Power switch (2) — Controls power for the storage system. Each power supply/cooling fan module has
one power switch.
4 Power supply/cooling fan
module LED handle
—
The handle of the power supply/cooling fan module indicates the DC power status
of the power supply and the fans.
• Not lit – No power
• Solid green – Power supply has valid power source and is operational
• Blinking amber – Error condition in the power supply
• Blinking green – Firmware is being updated.
SC5020 Series Storage System Hardware 7