Technical Specifications
The following tables describe the technical specifications of an SC4020 storage system.
| Drives | |
|---|---|
| SAS hard drives | Up to 24 2.5-inch SAS hot-swappable hard drives (6.0 Gbps) |
| Storage Controllers | |
|---|---|
| Configurations | Two hot-swappable
storage controllers with the following IO options:
|
| Storage Connectivity | |
|---|---|
| Configurations | Supports up to 192 drives in one redundant-path SAS
chain Supports up to 14 SC200 expansion enclosures and up to 7 SC220 expansion enclosures |
| Redundant Array of Independent Disks (RAID) | |
|---|---|
| Controller | Two hot-swappable storage controllers |
| Management | RAID management using the Dell Storage Manager Client |
| Back-Panel Ports Connectors (per Storage Controllers) | |
|---|---|
| Fibre Channel, iSCSI, or SAS connectors | Connection to a Fibre Channel fabric, iSCSI network, or a direct connection to servers with SAS HBAs |
| Ethernet connectors | MGMT – 1 Gbps or 10 Gbps embedded Ethernet/iSCSI port that is typically used
for system
management REPL – 1 Gbps or 10 Gbps embedded iSCSI port that is typically used for replication to another Storage Center |
| SAS connectors | 6 Gbps SAS connectors for SAS port redundancy and additional
expansion enclosures
NOTE:SAS connectors are SFF-8086/SFF-8088 compliant
|
| USB Connector | One USB 3.0 connector
NOTE:For engineering use only
|
| Serial connector | Used for initial configuration and support only functions |
| LED Indicators | |
|---|---|
| Front panel |
|
| Hard drive carrier |
|
| Storage controller module |
|
| Power supply/cooling fan | Four LED status indicators for Power Supply Status, AC Fail status, DC Fail status, and Fan Fail status |
| Power Supplies | |
|---|---|
| AC power supply (per power supply) | |
| Wattage | 580 W (maximum wattage: 584 W) |
| Voltage | 100–240 VAC (7.6 A–3.0 A) |
| Heat dissipation | 65 W at 230 VAC and 99 W at 115 VAC |
| Maximum inrush current | Under typical line conditions and over the entire system ambient operating range, the inrush current might reach 45 A per power supply for 40 ms or less |
| Available Hard Drive Power (per Slot) | |
|---|---|
| Supported hard drive power consumption (continuous) | Up to 1.2 A at +5
V Up to 0.5 A at +12 V |
| Physical | |
|---|---|
| Height | 8.79 cm (3.46 in.) |
| Width | 48.2 cm (18.98 in.) |
| Depth | 54.68 cm (21.53 in.) |
| Weight (maximum configuration) | 24 kg (53 lb) |
| Weight without drives | 19 kg (41 lb) |
| Environmental | |
|---|---|
| Temperature | |
| Operating | 10°C to 35°C (40°F to 95°F) with a maximum temperature gradation of 20°C per hour |
| Storage | –40° to 65°C (–40° to 149°F) at a maximum altitude of 12,000 m (39,370 ft) |
| Relative humidity | |
| Operating | 10% to 80% (noncondensing) with 29°C (84.2°F) maximum dew point |
| Storage | 5% to 95% (noncondensing) with 33°C (91°F) maximum dew point |
| Maximum vibration | |
| Operating | 0.21 G at 5–500 Hz for 15 min |
| Storage | 1.04 G at 2–200 Hz for 15 min |
| Maximum shock | |
| Operating | Half-sine shock 5 G +/- 5% with a pulse duration of 10 ms +/- 10% in operational orientations only |
| Storage | Half-sine shock 30 G +/- 5% with a pulse duration of 10 ms +/- 10% (all sides) |
| Altitude | |
| Operating | 0 m to 3,048 m (0 ft to 10,000 ft)
For altitudes above 915 m (3,000 ft), the maximum operating temperature is derated 1°C per 300 m (1°F per 547 ft) |
| Storage | –300 m to 12,192 m (–1000 ft to 40,000 ft) |
| Airborne Contaminant Level | |
| Class | G1 or lower as defined by ISA-S71.04-1985 |