Intel SR6850HW4 - Manual (Page 96)

SCSI Backplane Board Intel® Server Platform SR6850HW4 TPS
Revision 1.0
Intel order number D23151-001
84
7.4.1.2 Hot-Swap SCSI Hard Disk Drive Supplied Power
Hot-swap SCSI hard disk drives must fall within the power limits shown in Table 51. The SCSI
Backplane Board works with drives that meet the following requirements.
Table 51. SCSI Backplane Board Board Power Limits per Drive
Device constraint +5 V +12 V
Peak start current 0.73A 1.5A
Max operating current 0.81A 1.15A
Average idle
0.68A 0.61A
7.4.1.3 Power Supply Requirements
The external and internal power supply must meet the following requirements:
ƒ Rise time of less than 50ms (for all voltages).
ƒ Delay of 5ms (minimum) from valid power to power good.
See Table 52 for voltage regulation requirements.
Table 52. DC Voltage Regulation
DC Voltage Acceptable Tolerance
+5V ± 5%
+12V ± 5%
+3.3V ± 5%
+3.3V
stby
± 5%
+1.8V ± 5%