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

[Image]

                                CONNECTIONS

       Function           Location          Function           Location

  4-pin connector -          J3       26--pin connector -         J13
  auxiliary TermPOWER                 fault bus

  68-pin SCSI channel        J4       9--pin serial port -        J15
  1 connector -                       internal
  internal
                                      (optional - not on
                                      all models)

  68-pin SCSI channel        J5       8-pin connector -           J19
  2 connector -                       cache battery backup
  internal

  50-pin SCSI channel        J8       20-pin connector -          J21
  1 connector -                       cache battery backup
  internal

  4-pin connector -         J10       68-pin SCSI channel         J26
  drive active LED                    2 connector -
                                      external

  50-pin SCSI channel       J11       68-pin SCSI channel         J27
  2 connector -                       1 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 & 2
      Intel Triton (see note below)                           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               2 & 3
      to 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               2 & 3
      to 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.