SC7020 and SC7020F Storage Systems Owner’s Manual

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Technical Specifications

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


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)


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.


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.


Redundant Array of Independent Disks (RAID)
Controller	Two hot-swappable storage controllers
Management	RAID management using the Storage Manager


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


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


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


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	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)


Environmental
For additional information about environmental measurements for specific storage system configurations, see https://www.dell.com/environmental_datasheets.
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 G_rms at 5–350 Hz for 15 min
Storage	1.88 G_rms 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