Avago Technologies MegaRAID SAS 9240-4i - Manual (Page 81)

LSI Corporation
- 81 -
6Gb/s MegaRAID SAS RAID Controllers User Guide
August 2013
MegaRAID SAS RAID Controller Characteristics
Technical Specifications
3.3.4.17 Power Supply Requirements for the MegaRAID SAS 9271 RAID Controllers
All power is supplied to the MegaRAID SAS 9271-4i RAID controller, the MegaRAID SAS 9271-8i RAID controller, and
the MegaRAID SAS 9271-8iCC 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.
NOTE The MegaRAID SAS 9271 RAID controllers support the CVFM02
module, CVPM02 module, and the LSIiBBU09 unit.
NOTE The charging circuitry for the battery pack on the optional iBBU
battery-backed daughter card uses +12 V. If the BBU daughter card is
mounted, the following power consumption figures apply in addition
to the +12-V consumption figures listed in the previous table:
 During trickle charging of the battery pack: Not applicable
(no trickle charge for Li-ION).
 During fast charging of the battery pack: 250 mA in +12-V current.
NOTE If a Cache Vault Flash Module 02 (CVFM) is attached to the RAID
controller, and the CVFM02 module is connected to a Cache Vault
Power Module 02 (CVPM), the following power consumption figure
applies in addition to the +12-V consumption figures listed in the
previous table:
 During CVPM module charge cycle: 500 mA in +12-V current.
3.3.4.18 Operating and Nonoperating Conditions for the MegaRAID SAS 9271 RAID Controllers
For the MegaRAID SAS 9271-4i RAID controller, the MegaRAID SAS 9271-8i RAID controller, and the MegaRAID SAS
9271-8iCC RAID controller, 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 LSISAS2208 processor above the
maximum ambient temperature.
 Temperature range:
— +10 °C to +55 °C (without BBU or a Cache Vault module)
— +10 °C to +45 °C (with BBU)
— +10 °C to +55 °C (with LSIiBBU09 mode 1 through 5)
— +10 °C to +55 °C (with a Cache Vault module)
Table 32 Power Supply for MegaRAID SAS 9271 RAID Controllers
PCI Edge Connector State 1 State 2 State 3
+3.3-V supply 548.7 mA 916.7 mA 910 mA
+12-V supply 331 mA 723.3 mA 663.3 mA
+3.3-V auxiliary supply 0.6 mA 0.3 mA 0.1 mA
Total Power 5.785 W 11.7057 W 10.963 W