LSI MegaRAID SAS 9286-8e User's Guide download pdf (Page 84)

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6Gb/s MegaRAID SAS RAID Controllers User Guide

August 2012

Chapter 3: MegaRAID SAS RAID Controller Characteristics

Technical Specifications

3.3.4.25 Power Supply Requirements for the MegaRAID SAS 9285CV-8e RAID Controller

All power is supplied to the MegaRAID SAS 9285CV-8e 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 hard reset

 State 2: During a disk stress test

 State 3: While sitting idle at the DOS prompt

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.

3.3.4.26 Operating and Nonoperating Conditions for the MegaRAID SAS 9285CV-8e RAID Controller

The operating (thermal and atmospheric) conditions for the MegaRAID SAS 9285CV-8e 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 LSISAS2208 processor above the

maximum ambient temperature.

 Temperature range: +10 °C to +60 °C without the battery backup unit.

 Temperature range: +10 °C to +45 °C with the iBBU battery backup.

The parameters for the nonoperating (such as storage and transit) environment for the RAID 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 iBBU battery backup.

Table 36 Power Supply for the MegaRAID SAS 9285CV-8e RAID Controller

PCI Edge Connector State 1 State 2 State 3

3.3V supply 593mA 974mA 963mA

+12V supply 598mA 768mA 816mA

3.3V auxiliary supply 0.4mA 0.3mA 0.1mA

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 on the controller, the following power consumption figures apply:

During trickle charging of the battery pack: Not applicable (no trickle charge for Li-ION).

During fast charging of the battery pack: 250mA in +12V current.

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LSI MegaRAID SAS 9286-8e User's Guide Page 84