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418 MEGARAID (2-CHANNEL VERSION)

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.