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3-18 MegaRAID SAS RAID Controller Characteristics
Copyright © 2009 by LSI Corporation. All rights reserved.
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 12V ± 8 percent (from PCI edge connector only)
and 3.3V ± 9 percent (from PCI edge connector only). Table 3. 10 lists
the power supply for the RAID controllers for each of the three states at
the different voltages.
Table 3.10 Power Supply for SAS 9240 RAID Controllers
3.3.4.2 Operating and Non-operating Conditionsfor the SAS 9240 RAID Controllers
For the SAS 9240 RAID controllers, the operating (thermal and
atmospheric) conditions are:
• 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 +60 ° C.
The parameters for the non-operating (such as storage and transit)
environment for these controllers are:
• Relative humidity range is 5 percent to 90 percent noncondensing.
• Temperature range: −30° C to +80° C.
3.3.4.3 Power Supply Requirements for SAS 9260 RAID Controllers
All power is supplied to the SAS 9260 RAID controllers through the PCI
Express 3.3V rails and the 12V rail. Onboard switching regulator circuitry
PCI Edge Connector State 1 State 2 State 3
3.3V supply 330mA 330mA 330mA
+12V supply 1.00A 1.81A 1.53A
3.3V auxiliary supply 30mA 30mA 30mA