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# 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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|-------------------+----------+------------------+----------|
| 4-pin connector - | J3 | 26--pin | J13 |
| auxiliary | | connector - | |
| TermPOWER | | fault bus | |
|-------------------+----------+------------------+----------|
| 68-pin SCSI | J4 | 9--pin serial | J15 |
| channel 1 | | port - internal | |
| connector - | | | |
| internal | | (optional - not | |
| | | on all models) | |
|-------------------+----------+------------------+----------|
| 68-pin SCSI | J5 | 8-pin connector | J19 |
| channel 2 | | - cache battery | |
| connector - | | backup | |
| internal | | | |
|-------------------+----------+------------------+----------|
| 50-pin SCSI | J8 | 20-pin connector | J21 |
| channel 1 | | - cache battery | |
| connector - | | backup | |
| internal | | | |
|-------------------+----------+------------------+----------|
| 4-pin connector - | J10 | 68-pin SCSI | J26 |
| drive active LED | | channel 2 | |
| | | connector - | |
| | | external | |
|-------------------+----------+------------------+----------|
| 50-pin SCSI | J11 | 68-pin SCSI | J27 |
| channel 2 | | channel 1 | |
| connector - | | connector - | |
| internal | | external | |
|-------------------+----------+------------------+----------|
| 2-pin connector - | J12 | | |
| dirty cache LED | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| » | PCI expansion BIOS enabled | J2 | Closed |
|---+------------------------------------+-------+-----------|
| | PCI expansion BIOS disabled | J2 | Open |
|---+------------------------------------+-------+-----------|
| » | Controller chipset is other than | J28 | Pins 1 & |
| | Intel Triton (see note below) | | 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 | 2 & 3 |
| | Channel 1 | |
|---+------------------------------------------------+-------|
| | 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 | 2 & 3 |
| | Channel 2 | |
|---+------------------------------------------------+-------|
| | 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. |
+------------------------------------------------------------+