The SR 4200 is the same build as the Coraid SRX 4200. Build it yourself, or purchased pre-built chassis through Thinkmate or Servers Direct.

Motherboard Assembly

Coraid used four generations of SuperMicro motherboards, but there is very little about the motherboard that makes any difference to the systems. The only issue that limited motherboard selection was the fact that we tapped into the system management bus and talked to the various sensors for temps, fan speeds, and power supply states rather than using IPMI and on board BMC. If a user doesn’t care about those functions, they can use almost any motherboard. For these instructions, we will be using the X8DTH-iF.

Parts Required

  • motherboard, X8DTH-iF
  • memory (at least 3Gb)
  • CPU/Processor (Coraid used P4X-DPX5520–226–8M586)


  • Install memory into motherboard—use slots DIMM1A, DIMM 2A, and DIMM31 (Blue slots).
  • Install CPU in slot CPU1 on motherboard.
  • Set aside.

Chassis Assembly

Parts Required


  1. Remove the chassis from the shipping box.
  2. Remove the accessory box from the shipping box and set aside.
  3. Remove the shipping foam and rails from the shipping box and set aside.
  4. Set aside chassis cover by removing the 4 screws in top, save for late. Lift lid from the back, then slide off.
  5. Remove the 7 chassis fans, set them aside.
  6. Remove the motherboard tray.
    • Remove the 2 power supplies.
    • Remove side screw in front of power supplies; save screw for later.
    • Pull slide screw out of side.
    • Pull motherboard tray back.
  7. Unplug fan power cables from SAS backplane.
  8. Set SAS backplane jumper settings for backplane in the front of chassis as follows:
    • Verify that jumper JP84 is set to SGPIO on pins 1 and 2.
    • Verify that the jumpers for Fans 1, 2, 3, and 4 are OFF. OFF is the same as NO FAN printed on the SATA backplane—jumper on pins 2 and 3.
  9. Install the stand-offs in chassis as designated in figure below.
  10. SR 4200 Stand-offs

System Assembly

Parts Required

  • Assembled motherboard
  • SATA flash module
  • Assembled chassis
  • 11 motherboard screws
  • 1 heatsink [SNK-P0038P]
  • 9 SATA cables [CBL–0281L]
  • 5 SATA controller cards [AOC-SASLP-MV8]
  • 2 fan power extension cables [CBL–0296L]
  • power Y cable
  • 12C power cable [100–100000205]


  1. Remove the chassis cover, if not already removed.
  2. Pull motherboard tray back.
    • Remove power supplies.
    • Remove screw on side of chassis in front of power supplies.
    • Pull slide screw out and slide the tray back.
  3. Install assembled motherboard and attach with screws.
  4. Mount heatsink on top of CPU1:
    • In order to install heatsink correctly, screw first screw down 1/2 way, then do the same on the screw diagonally across. Repeat for remaining screws. Once they are all 1/2 the way down, go back and tighten them in the same pattern.
  5. Plug the Flash Module into the SATA motherboard connector labeled SATA0.
  6. Plug in all power cables:
    • The white, black, red, green, and yellow wired 12C cable labeled P4 goes to I2C power cable.
    • 8-pin Power PC goes to JPW2 on motherboard.
    • 4-pin Power PM goes to the Flash Module power cord.
    • 24-pin Power PA goes to JPW1 on motherboard.
    • Power PDa and PDb go to JPW3 on motherboard.
    • Note: Power PE is unused. Wrap and tuck it.
  7. Connect front panel LED by plugging cable into JF1 on motherboard with the red wire closest to the power supply.
  8. Connect the chassis intrusion switch by connecting it to the CHASSIS INTRUSION connector on the motherboard.
  9. Connect fans:
    • There are 7 fans in the unit. In this step you will connect 5 of them to the motherboard.
    • Connect the fans by starting on the right side (viewed from the back of chassis); row in front first, closest to front of chassis.
    • SR 4200
    • FAN 5 and FAN 6 will be connected later, and both require the fan extension cable [CBL–0296L].
  10. Install SAS controllers and cables:
PCIe Slot#.iPass Bay iPass Front-JSM2
3.bottom Front-JSM1 Front-JSM3
4.bottom No Connect Front-JSM4
5.bottom Rear-JSM3 Front-JSM5
6.bottom Rear-JSM2 Front-JSM6
7.bottom Rear-JSM1
  1. Pull power cables for FAN 5 and FAN 6 up.
  2. Slide motherboard tray in place—watch SAS cables; tuck extra cable under motherboard tray area.
  3. Replace screw inside of chassis in front of power supplies.
  4. Replace power supplies.
  5. Connect power status I2C cable:
    • There are 2 blue jumpers located in PCIe slot area—between PCIe slot 4 and PCIe slot 5.
    • Remove those jumpers.
    • Run cable behind the SAD controllers, and connect to the SAS controller in PCIe slot 5 with a “tie down” square—see picture.
    • Connect cable with orange wire coming in front of chassis and brown wire going to back of chassis as indicated here.
  6. Connect FAN 5 and 6:
    • Connect extender cable to dan cables.
    • Connect fan 5 and Fan 6 according to diagram earlier in procedure.
  7. Replace the clear acrylic air baffle:
    • Remove section C from air baffle.
    • Remove tabs on either side of air baffle that is opposite side of power supplies.
    • Remove section in rear of air baffle next to SAS controllers.
    • Install air baffle in chassis.
  8. Replace the 7 chassis fans.
  9. Put top cover back on chassis and replace 4 screw that secure lid to unit.

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