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Dell SC7020 and SC7020F Storage Systems: руководство по обслуживанию
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Dell SC7020 and SC7020F Storage Systems: руководство по обслуживанию

Technical Specifications

The following tables provide technical specifications for the SC7020 series storage systems:

Table 1. Drive SpecificationsSpecifications for the SC7020 and SC7020F drives
Drives
SC7020: SAS hard drives Up to 30 2.5-in. SAS hot-swappable HDDs (12 Gb SAS)
SC7020F: SAS SSDs Up to 30 2.5-in. SAS hot-swappable SSDs (12 Gb SAS)
Table 2. Storage Controller SpecificationsSpecifications for the storage controllers
Storage Controllers
Storage controllers Two hot-swappable storage controllers with one mezzanine card and three I/O card slots per storage controller.

Each storage controller has an internal battery backup unit. Write cache is mirrored between the two storage controllers. If a power failure occurs, the battery backup unit provides power to the storage controller so that the write cache can be saved to an SSD within the storage controller.

Table 3. Storage Connectivity ConfigurationsSpecifications for the storage connectivity configurations
Storage Connectivity
Configurations SC7020: Supports a total of 606 drives and 192 drives per SAS chain. Each SAS chain supports up to sixteen SC400 expansion enclosures, eight SC420 expansion enclosures, three SC460 expansion enclosures, and two SC280 expansion enclosures.

SC7020F: Supports a total of 606 SSDs and up to 192 SSDs per SAS chain. Each SAS chain supports up to eight SC420F expansion enclosure.

Table 4. RAID SpecificationsSpecifications for the RAID controllers and management
Redundant Array of Independent Disks (RAID)
Controller Two hot-swappable storage controllers
Management RAID management using the Storage Manager
Table 5. Back-Panel Port SpecificationsSpecifications for the back-panel port connectors
Back-Panel Ports Connectors (per Storage Controller)
Fibre Channel or iSCSI front-end connectors Connection to a Fiber Channel fabric or iSCSI network
Ethernet connectors MGMT – 1 Gbps or 10 Gbps embedded Ethernet port used for Storage Center management
SAS back-end connectors 12 Gb SAS ports for connections to expansion enclosures
NOTE:SAS connectors are SFF-8644 compliant.
Serial connector (micro USB) Used for initial configuration and support-only functions
Table 6. LED Indicator SpecificationsSpecifications for the LED indicators
LED Indicators
Front panel
  • One dual-color LED indicator for system status
  • One single-color LED indicator for power status
  • Identification button with a single-color LED
Hard drive carrier
  • One single-color activity LED
  • One dual-color LED status indicator per drive
Storage controller
  • Two single-color LEDs per Ethernet port indicating activity and link speed
  • One dual-color LED per SAS connector indicating port activity and status
  • One single-color LED indicating status
  • One single-color LED indicating system faults
  • One single-color LED for system identification
Power supply/cooling fan One dual-color LED handle indicating power supply and cooling fan status
Table 7. Power Supply Unit SpecificationsSpecifications for the power supply units
Power Supply Units (PSU) PSU Type 1 PSU Type 2 (Japan Only)
Maximum output power 1485 W 1485 W
Maximum input power 1688 W 1707 W
Maximum input current 8.8 A 17.5 A
Maximum inrush current 55 A for 10 ms or less 55 A for 10 ms or less
Nominal input voltage operating range 200–240 VAC 100–240 VAC
Nominal input frequency 50/60 Hz 50/60 Hz
Thermal output/heat dissipation 693 BTU per hour 757 BTU per hour
Inlet type C14 C20
Table 8. Hard Drive Power SpecificationsSpecifications for the available hard drive power per slot
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
Table 9. Physical SpecificationsSpecifications of the physical dimensions and weight
Physical
Height 13.34 cm (5.25 in.)
Width 44.50 cm (17.5 in.)
Depth 78.27 cm (31 in.)
Approximate weight (maximum configuration) 45 kg (100 lb)
Approximate weight without drives 35 kg (77 lb)
Table 10. Environmental SpecificationsSpecifications of the environmental measurements
Environmental
Temperature
Operating 10°C (50°F) to 35°C (95°F) with a maximum temperature gradation of 20°C/hour (36°F/hour)

Operating above 35°C could result in data loss

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 0.26 Grms at 5–350 Hz for 15 min
Storage 1.88 Grms at 10–500 Hz for 15 min
Maximum shock
Operating 31 G +/- 5% with pulse duration of 2.6 ms +/- 10% (equivalent to 20 in./sec [51 cm/sec])
Storage 71 G +/- 5% with pulse duration of 2 ms +/- 10% (equivalent to 35 in./sec [89 cm/sec])
Altitude
Operating 3,048 m (10,000 ft)

≤35°C (95°F) Maximum Rating – Maximum temperature is reduced by 1°C/300 m (1°F/547 ft) above 950 m (3,117 ft)
Storage 12,000 m (39,370 ft)
Airborne Contaminant Level
Class G1 or lower as defined by ISA-S71.04-1985