LSI MegaRAID SAS User Manual

LSI Corporation
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6Gb/s MegaRAID SAS RAID Controllers User Guide
August 2012
Chapter 3: MegaRAID SAS RAID Controller Characteristics
Technical Specifications
3.3.4.21 Power Supply Requirements for the MegaRAID SAS 9280-16i4e RAID Controller and the MegaRAID
SAS 9280-24i4e RAID Controller
All power is supplied to the MegaRAID SAS 9280-16i4e RAID controller and the MegaRAID SAS 9280-24i4e RAID
controller through the PCI Express 3.3V rails and the 12V rail. Onboard switching regulator circuitry operating from the
3.3V rails and the 12V rail provides the necessary voltages. The following states determine the typical current
consumption of the controller:
 State 1: During a consistency checks of all RAID 5 virtual drives at one time
 State 2: While sitting idle at the DOS prompt
 State 3: During a RAID 5 stress test
 State 4: During a drive stress test while the BBU is under fast charging
The supply voltages are 12V ± 8 percent (from the PCI edge connector only) and 3.3V ± 9 percent (from the PCI edge
connector only). The following table lists the power supply for the controller for each of the three states at the
different voltages.
3.3.4.22 Operating and Nonoperating Conditions for the MegaRAID SAS 9280-16i4e RAID Controller and the
MegaRAID SAS 9280-24i4e RAID Controller
The operating (thermal and atmospheric) conditions for the MegaRAID SAS 9280-16i4e RAID controller and the
MegaRAID SAS 9280-24i4e RAID controller 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 LSISAS2108 processor above the
maximum ambient temperature.
 Operating ambient temperature: +55 °C (The iBBU unit is not included in the limit as it is present remotely in the
system. You need to make sure that maximum operating ambient temperature around the LSIiBBU07 unit is 45 °C
and 55 °C for the LSIiBBU08 unit).
The parameters for the nonoperating (such as storage and transit) environment for the controller are as follows:
 Temperature range: –30 °C to +80 °C without the battery backup unit
 Temperature range: 0 °C to +45 °C with the LSIiBBU07 battery backup unit and 0°C to +55°C with the LSIiBBU08
battery backup unit
Table 34 Power Supply for the MegaRAID SAS 9280-16i4e and SAS 9280-16i4e RAID Controllers
PCI Edge Connector State 1 State 2 State 3 State 4
3.3V supply 1.339A 1.174A 1.225A 1.356A
+12V supply 1.466A 1.426A 1.487A 1.773A
3.3V auxiliary supply 0.048A 0.026A 0.214A 0.168A
Total power 21.509W 21.072W 22.593W 26.3052W
NOTE The charging circuitry for the battery pack on the optional iBBU battery-backed daughter card uses
+12V. If the iBBU daughter card is mounted, see State 4 in the previous table for typical current
consumption values.
NOTE The operating ambient temperature of these RAID controllers can be raised to +60 °C, provided
the airflow over the controller is at least 300 LFPM.

LSI MegaRAID SAS Specifications

General

RAID Levels	0, 1, 5
Ports	8
Form Factor	Low Profile
Operating Systems Supported	Windows, Linux, VMware
SAS Ports	8
BBU Support	Optional
Operating Temperature	0°C to 55°C