Avago Technologies MegaRAID SAS 9240-4i - Manual (Page 73)

LSI Corporation
- 73 -
6Gb/s MegaRAID SAS RAID Controllers User Guide
August 2013
MegaRAID SAS RAID Controller Characteristics
Technical Specifications
3.3.4 Electrical Characteristics and Environmental Conditions
This subsection provides the power supply requirements, and the operating (thermal and atmospheric) and
non-operating conditions, for the 6Gb/s MegaRAID SAS RAID controllers.
3.3.4.1 Power Supply Requirements for MegaRAID SAS 9240 RAID Controllers
All power is supplied to the MegaRAID SAS 9240-4i RAID controller and the MegaRAID SAS 9240-8i RAID controller
through the PCIe 3.3-V rails and the 12-V rail. Onboard switching regulator circuitry operating from the 3.3-V rails and
the 12-V rail provides the necessary voltages. The following states determine the typical current consumption of the
controller:
 State 1: During a hard reset
 State 2: During a drive stress test
 State 3: While sitting idle at the DOS® prompt
The supply voltages are 12 V ± 8 percent (from the PCI edge connector only) and 3.3 V ± 9 percent (from the PCI edge
connector only). The following table lists the power supply for the RAID controllers for each of the three states at the
different voltages.
3.3.4.2 Operating and Nonoperating Conditions for MegaRAID SAS 9240 RAID Controllers
For the MegaRAID SAS 9240 RAID controllers, the operating (thermal and atmospheric) conditions are as follows:
 Relative humidity range is 20 percent to 80 percent noncondensing.
 Airflow must be at least 200 linear feet per minute (LFPM) to avoid operating the LSISAS2008 processor above the
maximum ambient temperature.
 Temperature range: +10 °C to +55 °C
The parameters for the nonoperating (such as storage and transit) environment for these controllers are as follows:
 Relative humidity range is 5 percent to 90 percent noncondensing.
 Temperature range: –40 °C to +70 °C
3.3.4.3 Power Supply Requirements for MegaRAID SAS 9260 RAID Controllers
All power is supplied to the MegaRAID SAS 9260-4i, SAS 9260-8i, SAS 9260CV-4i, SAS 9260CV-8i, and SAS 9260DE-8i
RAID controllers through the PCIe 3.3-V rails and the 12-V rail. Onboard switching regulator circuitry operating from
the 3.3-V rails and the 12-V rail provides the necessary voltages. The following states determine the typical current
consumption of the controller:
 State 1: During a hard reset
 State 2: During a drive stress test
 State 3: While sitting idle at the DOS prompt
Table 24 Power Supply for the MegaRAID SAS 9240 RAID Controllers
PCI Edge Connector State 1 State 2 State 3
+3.3-V supply N/A N/A N/A
+12-V supply 350 mA 520 mA 470 mA
+3.3-V auxiliary supply N/A N/A N/A
Total Power 4.2 W 6.24 W 5.64 W