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VTrak Ex10 E310 datasheet states (2) 400W PSU’s. It also states 436W under full load with SAS drives. Since 436 > 400, could you clarify this statement?
Ken Chou posted this 22 June 2007

The information on the datasheet is correct.
141.68 Watts (under load w/o HDD) / 452.68 Watts (under load with SAS HDD) for E310f
157.8 Watts (under load w/o HDD) / 468.8 Watts (under load with SAS HDD) for E310s
 

The E-Class unit ships with 2 x 400W power supplies  
For the 400W power supply, the AC power should be 597W (400/0.67).
.67 is assuming 67% efficiency

The power consumption number is calculated by taking the power consumption of the unit 141.68
and adding the power consumption of the SAS drives. In this case, we are using 300GB 15kRPM Seagate
SAS drives which based on their data and assuming 67% efficiency comes to 17.4W

So then we calculate as follows:

17.4 x 12 = 208.8 , 208.8/0.67 ~= 311.64 power consumption of 12 SAS drives

E310f - 141.68 311 ~= 452.68
E310s - 157.8 311 ~= 468.8

Both of these are under 597W, so the system can run on a single power supply.

Legacy Other Disk Drive Enclosure with SuperTrak EX16350 hangs during bootup
Ken Chou posted this 01 November 2006

Some disk drive enclosures might fail to boot with the SuperTrak EX16350 controller card and early design SATA disk drives installed. When the SuperTrak BIOS appears on the screen, this message is displayed: “Something wrong with your hardware.”

The boot failure might be caused by the LED connections between the enclosure backplane and the SuperTrak card, depending on how the enclosure is internally grounded.

If the enclosure with the SuperTrak card hangs during bootup:

1. Power down the enclosure.

2. Disconnect the LED leads from the SuperTrak’s LED header.

3. Reboot the enclosure.

If the enclosure boots successfully with the LED leads disconnected, your system might have the condition discussed in this document.

1. Power down the enclosure again.

2. Connect the LED leads to the SuperTrak’s LED header in the opposite polarity from your original configuration.

3. Reboot the enclosure.

The SuperTrak BIOS should appear and the enclosure should boot normally.

For most installations, you connect single LED leads to the anode (+) pin on the LED header.

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