AMERICAN MEGATRENDS, INC.
418 MEGARAID (2-CHANNEL VERSION)
428 MEGARAID (2-CHANNEL VERSION)
MEGARAID ULTRA
| 
 Processor  | 
 Intel i960CA RISC  | 
| 
 Processor Speed  | 
 33MHz  | 
| 
 Maximum Onboard Memory  | 
 128MB DRAM (MegaRaid 418 and 428) 32MB DRAM (MegaRaid Ultra)  | 
| 
 Hard Drives supported  | 
 Up to 30 SCSI-2 Wide and Fast devices  | 
| 
 Floppy drives supported  | 
 None  | 
| 
 I/O Options  | 
 Tone generator  | 
| 
 Data Bus  | 
 32-bit PCI  | 
| 
 Card Size  | 
 Full-length, full-height card  | 
| 
 RAID levels supported  | 
 0,1,3,5,30 and 50  | 
| 
 CONNECTIONS  | |||
| 
 Function  | 
 Location  | 
 Function  | 
 Location  | 
| 
 4-pin connector - auxiliary TermPOWER  | 
 J3  | 
 26--pin connector - fault bus  | 
 J13  | 
| 
 68-pin SCSI channel 1 connector - internal  | 
 J4  | 
 9--pin serial port - internal (optional - not on all models)  | 
 J15  | 
| 
 68-pin SCSI channel 2 connector - internal  | 
 J5  | 
 8-pin connector - cache battery backup  | 
 J19  | 
| 
 50-pin SCSI channel 1 connector - internal  | 
 J8  | 
 20-pin connector - cache battery backup  | 
 J21  | 
| 
 4-pin connector - drive active LED  | 
 J10  | 
 68-pin SCSI channel 2 connector - external  | 
 J26  | 
| 
 50-pin SCSI channel 2 connector - internal  | 
 J11  | 
 68-pin SCSI channel 1 connector - external  | 
 J27  | 
| 
 2-pin connector - dirty cache LED  | 
 J12  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| » | 
 PCI expansion BIOS enabled  | 
 J2  | 
 Closed  | 
| 
 PCI expansion BIOS disabled  | 
 J2  | 
 Open  | |
| » | 
 Controller chipset is other than Intel Triton (see note below)  | 
 J28  | 
 Pins 1 & 2 closed  | 
| 
 Controller chipset is Intel Triton  | 
 J28  | 
 Pins 2 & 3 closed  | |
| 
 Note: Jumper J28 is present on model 418 Rev. A only.  | |||
| 
 CHANNEL 1 TERMINATION POWER SETTINGS  | ||
| 
 Setting  | 
 J20  | |
| » | 
 TERMPOWER from PCI bus to Channel 1  | 
 1 & 2  | 
| 
 TERMPOWER from auxiliary power source to Channel 1  | 
 2 & 3  | |
| 
 TERMPOWER from SCSI bus to Channel 1  | 
 Open  | |
| 
 CHANNEL 2 TERMINATION POWER SETTINGS  | ||
| 
 Setting  | 
 J17  | |
| » | 
 TERMPOWER from PCI bus to Channel 2  | 
 1 & 2  | 
| 
 TERMPOWER from auxiliary power source to Channel 2  | 
 2 & 3  | |
| 
 TERMPOWER from SCSI bus to Channel 2  | 
 Open  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 4MB  | 
 (1) 1MB x 36  | 
 None  | 
| 
 8MB  | 
 (1) 1MB x 36  | 
 (1) 1MB x 36  | 
| 
 16MB  | 
 (1) 4MB x 36  | 
 None  | 
| 
 32MB  | 
 (1) 4MB x 36  | 
 (1) 4MB x 36  | 
| 
 64MB  | 
 (1) 16MB x 36  | 
 None  | 
| 
 128B  | 
 (1) 16MB x 36  | 
 (1) 16MB x 36  | 
| 
 Note: The maximum cache on the MegaRaid Ultra is 32MB.  | ||