Cubix XPRMG3-1625URP User manual

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Xpander Rack Mount 16 5U Gen 3
with Redundant Power [Part #
XPRMG3-1625URP] –User Guide
Xpander Rack Mount 16 5U Gen 3 with Redundant Power (RP) supplies is a rack mount PCI
Express (PCIe) expansion enclosure that enables connection of 16 single-wide PCIe Solid-State
Drives (SSDs) or cards with rear-connected auxiliary power cables to one or two host
computers. Rack Mount 16 5U RPS supports PCIe SSDs with passive cooling and PCIe cards
with rear-connected auxiliary power cables. The host computer must have one or two PCIe x16
PCIe Gen 3.0 slots available for the host interface controller (HICs).
Rack Mount 16 5U RP provides two Main Interface Boards (MIBs) connected to two HICs in one
host computer or connected to one HIC in each of two host computers with a PCIe x16 cable.
Each MIB features 8 x PCIe x8 electrical / x16 mechanical slots to support a total of 16 x single-
wide PCIe SSDs or cards.
Each MIB connects via a PCIe x16 cable to a HIC in a host computer. You can connect both
MIBs to HICs in one computer or each MIB to a HIC in separate host computers.

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Xpander Rack Mount 16 5U RPS Technical Specifications
Expansion slots
PCI Express Generation 3.0 x8 electrical / x16 mechanical
Number of slots (std)
8 slots in each of 2 x MIBs for a total of 16 slots
Form factor support
16 x full-height, full-length, single-wide PCIe SSDs / adapters in 2 x MIBs
Auxiliary power cable
support
Rear-connected auxiliary power cables (if needed)
16 x sets of 6-pin + 8-pin (6P + 8P)
Connecting cable
External PCI Express cable
Connector type
x16, 136-pin
Length, standard
2.00meters (78.7inches or 6.6feet) total length
1.16meters (45.6inches or 3.8feet) usable length
Connector duty cycle
250 mating cycles maximum per connector
PCIe x16 HIC
Install in a PCIe x16 slot of the host computer
PCIe Gen 3 slot in host
Provides a theoretical 128.0Gbps data transfer rate
PCIe Gen 2 slot in host
Provides a theoretical 80.0Gbps data transfer rate
Front panel LCD
MIB selection = left button
Main menu = middle button
Sub-menu = right button (See detail on page 9.)
Cubix Corporation
MIB assembly and revision; management firmware revision
Power supply status
Redundant power
Temperature status
3 sensor readouts in degrees Centigrade (C)
Fan status
Fan status, voltage percent (%) speed
PCIe link status
x16 cable connected; 8.0Gbps or 5.0Gbps x16 link speed
x16 cable
Connected or not connected status
Slot 1 - 8 x16 transfer
rate, theoretical
PCIe Gen 3 8.0Gbps x8 = 64.0Gbps
PCIe Gen 3 5.0Gbps x8 = 40.0Gbps
LCD panel backlight
Toggle on / off using right button
Fan panel
Power input receptacles and PCIe cables
Fan profile settings
Use Xpander internal jumpers JP7 and JP8 (see page 12)
Cooling fan profiles
Each fan runs at 112cfm (cubic feet per minute) maximum
Performance
2 x double-wide GPUs in slots 1 and 4
Quiet
1 x double-wide GPU in slot 1 or 4
High Performance
2 x double-wide GPUs in slots 1 and 4, and 2 x single-slot PCIe cards
GPU
4 x double-wide GPUs
AC power supply, 1 / MIB
1,500W power auto-ranging 90 –264VAC with 1 + 1 hot-plug modules:
each module provides 1,500W 180 –264VAC @ 15.0Amps.
Auxiliary power cables
Standard: 16 x sets of 6-pin + 8-pin (6P + 8P)
Operating environment
0° to 30° Celsius (32° to 86° Fahrenheit) temperature
5% to 80% non-condensing humidity
Altitude
Maximum
Operating
10,000ft (3,05meters)
Storage
50,000ft (15,24meters)
Dimensions
8.75" H x 19.00" W x 26.00" D (22.22cm H x 48.26cm W x 66.04cm D)
Weight
52.00lbs (24.50kg)
Warranty / period
Parts & labor return to manufacturer / 2 year
Ext. warranty period
Optional 3 years

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Included
Xpander Rackmount 16 includes four cooling fans, two 1,500Watt power supplies with two
redundant modules and four power cords as well as two MIBs, two PCIe x16 HICs and two
external PCIe x16 cables. It does not include installation media because installation requires no
driver or other software. The only drivers you install are for the devices you install in Xpander.
Quick Start without Detail
Install a PCIe SSD in the host system and install the device driver. Once you have verified
operation, shut down, move the GPU to Xpander, install the HIC in the same slot within the host
computer, connect Xpander to the HIC using the cable provided and connect power to Xpander
Rackmount 16. Boot the host computer. If the host operating system (OS) is plug-n-play, the OS
detects the GPUs and loads device drivers.
Start-up / Installation / Test Procedure with Detail
Each Rack Mount 16 provides two MIBs with four slots for a total of 16 x PCIe x8 slots. The MIB
supports either one or two host computers.
During this procedure, place the Rack Mount 16 enclosure on a stable surface. Use a Philips #2
screwdriver for this procedure. Make sure all AC power to Xpander is disconnected. Do not
install graphics or other controllers until instructed to do so within this procedure.
1. Switch off AC power from the host computer. Leave the power cord to the host connected.
2. Install the standard x16 HIC in a PCIe x16 slot within the host computer. Preferably, the HIC
should be in a PCIe Gen 3.0 x16 slot.
3. Connect the external PCIe cable from its MIB
inside the Rack Mount 16 enclosure to the
HIC port. Make sure the connector snaps into
place within the HIC port as shown in the
illustration at the right. Cubix includes a low-
profile end bracket for the HIC, if required.
4. Remove the screws holding in place the
Rack Mount 16 top cover and remove the top
cover.
5. Connect a power cord to the receptacle in
each of the four power supply modules at the
Rack Mount 16 enclosure rear.
6. Power on the host computer. Rack Mount 16
enclosure also powers on.

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7. Confirm that the PEX1 -Cable Link LED lights green for the MIB inside
the Rack Mount 16 enclosure.
Xpander MIB is functioning properly
once the PEX1-Cable LED lights green.
Proceed to the next step to install
adapters.
8. Switch off AC power to the host computer.
Leave the power cords and the external
PCIe cables to the host computer connected.
9. Disconnect AC power from Xpander MIB or
main board in which you plan to install the
GPUs.
10. Remove the screws for holding down the
PCIe card end brackets.
11. Install the graphics or other controller(s) in
the Rack Mount 16 PCIe slot(s) and secure
each with the screws provided in the top of
the I/O panel.

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12. Connect PCIe auxiliary (aux) power cables.
The power supply with redundant modules
inside Rack Mount 16 enclosure provides eight
sets of aux power connectors including 6P +
8P (6-pin and 8-pin) connectors. See the
image at the right.
13. Make sure blank end brackets (L-brackets) are
installed for each slot without an accelerator.
14. Replace the ventilation panel and tighten the two screws holding it in place. See the image
on the previous page.
15. Power up the computer(s) and the Rack Mount 16 to confirm that the appropriate slot link
LEDs are lit green, which confirms that you have installed a controller correctly in each slot.
Refer to the appropriate image above to identify slot LEDs.
16. Connect power to Xpander and boot up the host computer.Install the appropriate graphics or
other controller driver(s) using the vendor’s procedure: e.g., NVIDIA Quadro / Tesla / Grid
Series or AMD Firepro S9100 / S9150 / S9170.
17. Replace the Rack Mount 16 front top covers and replace the screws holding it in place.
Normal Power On/Off Procedure
1. With Rack Mount 16 connected to the host computer and running, shut down the host
computer normally.
2. With Rack Mount 16 connected to the host computer and powered down, switch on the
connected host computer; both Xpander and host will boot.
3. To run the host PC without Xpander connected, power down the host, remove power from
Xpander and boot the host. When you are ready to run Xpander again, power down the
host, connect power to Xpander and boot the host.
Warning
Replace the cover as soon as possible to allow for proper cooling. Do not run Rack Mount 8
without the cover for more than a few minutes.
Warning
Make sure that blank end brackets (L-brackets) are installed for each slot that has no
PCIe card. Blank end brackets are required to assure proper cooling of the GPUs.
Warning
Before installing or removing cards in the Xpander Rack Mount 16, remove AC power and
wait for the 5V Standby LED to power off.

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Install Xpander in a Cabinet
For this procedure, use a Philips #2
screwdriver, a flat-blade screwdriver and a 3/8”
wrench or socket and drive. When lifting the
Xpander into place, ask for assistance. Mount it
close enough to the host computer so that the
external PCIe cable will reach. Mount Xpander
either immediately above or immediately below
the host computer(s) in the cabinet.
Within packaging, you will find four brackets
that mount within the four corners of your rack
mount cabinet, screws, nuts and G-nuts for use
in mounting Xpander within a cabinet. See the
image on the previous page.
1. Shut down the host and Xpander normally
and disconnect all data and power cables
connected to Xpander.
2. Find in packaging the rackmount slide rails with a bag of 8 x mounting screws taped to one
of the rails.
3. Remove the inner slide rail, or slide mount,
from the outer rail and mount it to Xpander
using the Xpander slide mounting holes. To
release each outer slide mount, slide it
toward the rear of the enclosure until it stops.
Press the catch to release and remove the
outer slide mount as you can see in the
image at the right.
4. Determine where to mount the Xpander slide
mounts in your cabinet.
5. Mount the front and rear mounting brackets (Part # S32760A) to each slider assembly with
the bolts and nuts provided in the packaging.
6. Repeat the process for the other front and two rear mounting brackets and slider assembly.
7. Tightly secure the screws holding the sliders to the front and two rear mounting brackets on
each side of the cabinet.
8. Check the two rails on each side and check from front to rear to make sure that you have
mounted the rails so that they are level within the cabinet.

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9. Lift the Xpander, line up the inside slider with the slider assembly mounted in your cabinet
and carefully slide it into place.
10. Try sliding the Xpander in and out slightly to make sure it moves freely.
11. Secure Xpander into place within the cabinet using the front-panel screws provided.
12. Connect the PCIe x16 external cable to the HIC in the host computer.
13. Connect power to Xpander.
Use this step if you need extender brackets
for mounting in a 1000mm deep cabinet.
1. Mount the extender bracket on the outer
slide mount behind the front bracket
(S32760 A). Mount the rear bracket (S32760
A) to the rear end of the extender bracket.
Leave the nuts loose so you can slide the
rear bracket along the extension bracket to
mount on the cabinet’s vertical rails and fit inside the cabinet. Check to make sure the
mounting brackets and slide rails are level from front to rear before tightening the screws
and nuts. Align the front of the slider with the front of the cabinet.
2. If you do not need the extender brackets, mount each of the two sliders into the front and
rear mounting brackets (Part # S18500A) and slider assembly with the bolts and G-nuts
provided in the packaging. Use the Philips #2 screwdriver and the 3/8” wrench or socket to
secure snugly but not tightly each slider to the front and rear mounting brackets. Check to
make sure the mounting brackets and slide rails are level from front to rear before tightening
the screws and nuts. Align the front of the slider with the front of the cabinet.
3. Repeat the process for the other two front and two rear mounting brackets (as well as the
extender bracket if needed) and slider assembly on the right side of the cabinet.
4. Check to make sure that the slide rails are level, both from front to back and from right to
left. Once you’re sure the slide rails are level, you’re ready to tighten the mounting screws.
See the image at the right.
5. Tightly secure the screws holding the sliders to the front and two rear mounting brackets on
each side of the cabinet.
6. Extend the slide rails almost all the way out
the front of the cabinet.
7. Lift the Rack Mount 16 enclosure, line it up
carefully and slide it into place. Before lifting
the Rack Mount 8 enclosure into place, ask
for assistance.
8. Try sliding the Rack Mount 16 in and out slightly to make sure it moves freely.
9. Connect the AC power cords into the Rack Mount 16 rear receptacles.
10. Make sure the host computer(s) with the host adapters installed are powered down.
11. Connect the PCIe x16 external cables to the host adapters in the host computer(s).
12. Power up the host computer(s) with the host adapters installed.
Warning
Before lifting Xpander into place, ask for assistance.

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Access Xpander Rack Mount 16 Interior
For this procedure, use a Philips #2 screwdriver. For accessing Rack Mount 16 to add, move or
replace GPUs or other adapters, use the following procedure.
1. Shut down gracefully the host computer(s) connected to the MIB(s) you intend to access.
2. Remove the power cord(s) connected to the power supply modules.
3. Remove the secure screws holding the Rack Mount 16 in the cabinet.
4. Gently pull the Rack Mount 16 toward you a foot or so.
5. Remove the screws holding in place the Rack Mount 16 top cover, remove the top cover
and set it aside.
6. Remove the two screws holding the ventilation panel in place above the I/O panel.
7. Add, remove or replace the GPUs or other cards, making sure to seat each firmly in the slot,
secure the end bracket screws and to connect aux power cables, if necessary.
8. Replace the Rack Mount 16 front top cover and replace the four screws (front, rear and one
on each side) holding it in place.
9. Gently slide the Xpander Rack Mount 16 back in place.
10. Replace the secure screws holding the Rack Mount 16 in the cabinet.
Front Panel LCD
Rackmount 16 front panel LCD provides
enclosure details and status. Beneath the LCD
are three buttons: left button scrolls through
MIBs, middle button scrolls through the main-
menu items and right button scrolls through sub-
menu items.
When you first connect power, Xpander comes
up in standby mode. The LCD displays Cubix on
the top line and Corporation on the bottom line.
This is the Start menu. Access all other main
menu items by pressing the left button for a MIB,
the middle button for a menu selection and then
the right button for a sub-menu selection.
The upper right corner of the LCD shows a flashing asterisk *. This indicates that the on-board
Micro-Controller Unit (MCU) is running properly. If the asterisk is not flashing or the LCD is not
responding, reset the MCU by pressing and holding the left button for 3 seconds while Xpander
is running. A corresponding HB (for heartbeat) LED on the MIB also confirms that the MCU is
working.
Warning
Before installing or removing cards in the Rack Mount 16, switch off AC power and wait for
the 5V Standby LED to power off for the affected MIB.
Warning
Make sure that blank end brackets (L-brackets) are installed for each slot that has no PCIe
card, especially if the installed cards are passively-cooled GPUs. Blank end brackets are
required to assure proper cooling of the GPUs.

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When a fault occurs, the LCD will jump to that fault and the LCD backlight will flash on / off.
Press the left button to acknowledge the fault and the LCD will stop flashing and enable normal
operation. The LCD will continue to display the fault at the applicable sub-menu until you clear
the fault.
Menu 1: Start Menu
Menu 1 Sub-menu 1 Sub-menu 2 Sub-menu 3
Main menu 1: Cubix Corporation
Sub-menu 1: PCB Assembly
Board Number
EEPROM Revision
Board Revision
Sub-menu 2: MCU Firmware
Release Number
Release Date
Sub-menu 3: PCB Serial Number
Menu 2: Power Supply Status
Menu 2 Sub-menu 1 Sub-menu 2
Main Menu 2: Power Supply Status
Sub-Menu 1: Main Power Status:
PWR Standby = Main power is off; system is in standby
PWR ON-Good = Main power is on; +3.3V, +5V, +12, -12V are within spec.
PWR ON-FAULT = Main power is on; +3.3V, +5V, +12V, or -12V is out of spec.
Sub-Menu 2: Optional redundant power supply (RPS) status
RPS Standby = Main Power is off, System is in standby
RPS ON-Good = Main Power is on, power supply/modules are working
RPS ON-FAULT = Main Power is on, power supply/module has failed
Menu 3: Temperature Status
Menu 3 Sub-menu 1 Sub-menu 2
Menu 3: Temperature Status
Sub-Menu 1: Display the temperature of the 3 temperature sensors in degrees Celsius.
Note: If a temperature sensor fails, FLT (fault) appears under the failed sensor.
Sub-Menu 2: Bridge (left), Bridge (right) IC Temperature (Range: 20C-125C, ---C when power is off)
Cubix
Corporation
c
PCB Assembly
A09180 Rev 1A-0A
c
MCU Firmware
Rel 01 06-20-12
c
Power Supply
PWR ON-Good
c
Power Supply
RPS ON-Good
c
Power Supply
Status
c
Temperature
Status
c
Tmp1 Tmp2 Tmp3
24C 25C 26C
c
IC Temperature
65C
c
Serial Number
10200000
c

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Menu 4: Fan Status
Menu Sub-menu Sub-menu Sub-menu Submenu
Menu 4: Fan Status
Sub-Menu 1-4: Indicates fan status for fans 1-4
Note: Fan speed is controlled by adjusting fan voltage based on sensed system temperature. Fan voltage
adjusts from 6V min (25deg C or lower) at 50% to 12V max (50deg C or higher) at 100%. Fan voltage is
the same for all fans.
PWR OFF is 0V at 00%; system is in standby.
Running aaV at pp%; fan is good; aa = fan voltage and pp = fan power percent (%).
FAULT is 12V at 100%; fan fault: fan voltage is set to full on.
NO FAN is aaV at pp%; Xpander can be configured with 1, 2 , 3, or 4 fans. No fan means fan is
not installed.
Menu 5: PCIe Link Status
Menu Sub-menu Sub-menu Sub-menu
Menu 5: PCIe Link Status
Sub-Menu 1: Indicates x16 PCIe cable installation status
Connected x16 cable is properly connected to the HIC
NOT-Connected x16 cable is not properly connected to the HIC
Sub-Menu 2: x16 PCIe cable link speed and link width. Speed and width depend on the host capability.
Speed: 8.0Gb/s, 5.0Gb/s or 2.5Gb/s
Width: x1, x2, x4, x8, x16 and “NO Link” when the host did not successfully link or Xpander is
in standby power.
Sub-Menu 3-10: Link speed and link width for slots 1-8.
Speed: 5.0Gb/s or 8.0Gb/s
Slot 1-8 width: x1, x2, x4, x8, and “NO Link” when the slot is empty, unsuccessful link, or
Xpander is in standby power.
LCD Backlight Control
Press right switch to toggle the LCD backlight On/Off.
Fan Profile Settings
Use jumpers JP8 and JP2. Pin 1 is furthest from the board edge and pin 3 is closest to the
board edge.
Fan Profile
JP8 (PIC_RB0)
JP7 (PIC_RB1)
Performance Mode
1-2
Quiet Mode
1-2
High Performance Mode
2-3
Fan
Status
c
Fan 1
Running 7V 70%
c
Fan 2
Running 7V 70%
c
Fan 3
Running 7V 70%
c
Fan 4
Running 7V 70%
c
PCIe Link
Status
c
PCIe X16 Cable
Connected
c
PCIe Cable
8.0Gb/s X16
c
PCIe Slot n
8.0Gb/s X16
c

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Replace a Power Supply Module
All power supply modules show a steady green LED when operating normally. A module with a
red LED is either disconnected from power or has a fault. Check that the power cord is firmly
seated. If an LED remains red, replace the module.
Shipping Procedure
Before shipping Xpander, remove any installed graphics or other controller(s) using the
following procedure:
1. Switch off the host computer connected to Xpander.
2. Disconnect power from Xpander.
3. Disconnect Xpander from the HIC(s).
4. Remove the secure screws holding the Xpander in the cabinet.
5. Gently pull the Xpander toward you.
6. Lift Xpander down from the cabinet and set it on a stable surface.
7. Remove the screws holding Xpander top cover, remove it and set it aside.
8. Remove the graphics or other controllers and pack them in the original packaging.
9. Replace the hold-down brackets and tighten the captured screws.
10. Pack the graphics cards or other controllers within the boxes in which you received them.
11. Replace the Xpander Rackmount Elite front top cover, replace the screws and remove the
power cords.
12. Remove the two outer slide mounts by sliding each out until it stops. Press the catch to
release and remove the outer slide mount.
13. Remove the two slide mounts from the Xpander sides.
14. Store all of the screws, nuts and G-nuts in the plastic bag included. Tape the bag to the rails
and wrap the rails together.
15. Remove the HIC(s) from the host computer.
16. Within the original packaging, pack the Xpander, the power cords, the HIC(s) and the boxed
graphics cards. Include a copy of these instructions.
Warning
Before lifting Xpander out of a cabinet, ask for assistance.
Warning
Remove GPUs or other adapters before shipping Xpander.

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Troubleshooting
Issue: Cable LED inside Xpander does not light green.
Resolution: Check the following:
Confirm that the HIC is firmly seated in a PCIe slot within the host computer.
Confirm that the cable connector is firmly seated HIC connector port.
Issue: Cable LED inside Xpander flashes green even though I have a PCIe x16 HIC
and cable.
Resolution: The internal Cable LED should light steady green. If the Cable LED flashes, it is
transferring data at a reduced bandwidth because you installed the PCIe x16 HIC
in a Gen 1 slot or a PCIe x8 (electrical) slot. If your HIC is PCIe x8, you installed
it in a Gen 1 slot. The HIC operates at full bandwidth when installed in a PCIe
Gen 2 slot.
Issue: Slot LED inside Xpander does not light green.
Resolution: Shut down the OS gracefully, power down Xpander and reseat the GPUs in each
PCIe slot. Make sure that you seat each GPU firmly in its slot and that you
connect all aux power connectors firmly.
Issue: Slot LED inside Xpander flashes green even though I installed a PCIe x16 Gen 3
GPU or card.
Resolution: Slot LEDs should light steady green. If they are flashing, it may be because the
GPUs in the slots do not have a processing load. Apply a processing load on the
GPUs. If the slot LEDs still flash green, check the vendor’s link for a driver
update.
Issue: All Cable and Slot LEDs are lit green but your OS does not detect the GPUs.
Resolution: Shut down the OS gracefully, power down Xpander and reseat the GPUs in each
PCIe slot. Make sure that you seat each GPU firmly in its slot and that you
connect all aux power connectors firmly.
Issue: The front-panel LCD screen backlight is flashing on/off, which indicates a fault.
Resolution: Press the MIB button momentarily to identify the MIB with the fault. Acknowledge
the fault by pressing the Menu button, which will stop the LCD flashing and the
LCD will remain at the fault.
Issue: After acknowledging a fault, the front-panel LCD screen backlight continues
flashing on/off, which indicates two or more faults. If multiple faults have
occurred, when you acknowledge the first fault, the LCD will jump to the next
fault and the LCD backlight will once again flash on/off. This continues until you
clear all faults.
Resolution: Press the MIB button momentarily to identify the MIB with the fault. Acknowledge
the fault by pressing the Menu button, which will either stop the LCD flashing and
the LCD will remain at the fault, or the LCD will jump to the next fault and the
LCD backlight will once again flash on/off.
Issue: The front-panel LCD screen either does not respond or is blank even though
Xpander is operating.
Resolution: Press and hold the MIB Select button to reset the Micro-Controller Unit (MCU).

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Issue: The front-panel LCD screen either does not respond or is blank for a particular
MIB even though Xpander and the MIB are both operating.
Resolution: Select the appropriate MIB using the MIB Select (left) button. Press and hold the
Menu (middle) button for 3 seconds to reset the Micro-Controller Unit (MCU). If
the Xpander is running, the Xpander fans will turn on full speed for 10 seconds
and then slow down to the operating speed set by the MIB local temperatures.
Issue: The passively-cooled GPUs or accelerators in Xpander are overheating.
Resolution: Make sure you have installed blank end brackets (L-brackets) for each empty
Xpander slot. The blank end brackets are essential to assure proper cooling,
especially passively-cooled accelerators (such as Intel Xeon Phi coprocessor or
GPUs like NVIDIA Tesla K40 / K80 or Grid K2, as well as AMD Firepro S9100 /
9150 / 9170).