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One Stop Systems 

 
 

OSS-521 Gen4 BP  

 

 

 

 

 

 

                                               21

 

 

 
 

Warning: Only use the Upstream slot for the Target card. Do not plug-in the Target card in the downstream PCIe slot.

 

 

 
Ensure the card is firmly and fully seated in the slot. Secure the card with a retaining screw.

 

 

 
 
 

6.2 

Host Card Installation 

The host card can only be installed in the computer motherboard’s PCIe slot. Install the Host card in an x16 Gen4 PCIe slot.  
Check the PCIe slot for any foreign debris as this can damage the card during installation. 

 

Check the dipswitches on the card are set to host mode before installation.   

 

Photos below are x16 dipswitches settings for host mode. 
 

6.2.1 

Host Card Switch Settings (x16 Configuration)   

 

SW1 #2 = ON;  #5 =ON.   

 

SW2 #1 = ON;  #2 = ON 

 

Note: For more information on different host card dipswitch settings / configurations please check the OSS-PCIe-HIB616-x16 
installation guide. 

 

Summary of Contents for OSS-521 Gen4

Page 1: ...INSTALLATION GUIDE OSS 521 Gen4 Backplane OSS 521 Gen4 Backplane www onestopsystems com ...

Page 2: ...apping 16 4 Hardware Requirements 17 4 1 OSS PCIe HIB616 x16 card 17 4 2 SFF 8644 Gen4 x4 Cable 17 4 3 Expansion Chassis with ATX Power Supply 17 5 Backplane Installation 18 6 Cable Adapter Card Installation 20 6 1 Target Card Installation 20 6 1 1 Target Card Switch Settings 20 6 2 Host Card Installation 21 6 2 1 Host Card Switch Settings x16 Configuration 21 7 Cable Installation 23 7 1 Connect M...

Page 3: ...gnized 36 13 2 My PCIe devices are showing UP with a Yellow Exclamation mark 36 13 3 No link between host and target cards 36 13 4 Broken OSS Backplane 36 13 5 My PCIe cards are not detected 36 14 How to Get More Help 37 14 1 Contacting Technical Support 37 14 2 Returning Merchandise 37 14 3 Third Party Hardware Software Support Policy 37 14 4 Online Support Resources 37 ...

Page 4: ...n Link Cable Installation Powering Up the unit system Board LED Indicator Verify Device Installation 2 Unpacking Check and identify the standard supplied item Inspect the backplane for physical defects and damages To achieve good performance and reliability it is recommended to use a certified and compatible set of an OSS Gen4 adapter cards aka Host Interface Board and a Gen4 Mini SAS HD SFF 8644 ...

Page 5: ... status indicator when slot is populated or not Solid green when card is present Off when no card 9 Target Slot LED LED status indicator for Target card Solid green when Gen 4 adapter card is installed 10 Upstream Port Target Slot Designated slot for Target card only 11 Dip Switches For slot configuration 12 Board LEDs LED status indicator for the board 13 FPGA Connector FPGA Programming connector...

Page 6: ...mode Slot 8 configured as Downstream mode will only work with an end point device or a 3rd party PCIe card Configured as an Upstream mode use only with an OSS HIB Target card 3 3 Slot LEDs Item Name Description When Lit Solid Green or Blinking When Off 1 Target Slot LED Upstream Slot LED Solid Gen4 Link OFF Not Linked No Card present in the slot Blink 2Hz Gen3 Link Blink 1Hz Gen2 Link Blink 0 5Hz ...

Page 7: ...LED 1 FPGA Blinking LED When FPGA code is loaded and working 8 blinks 2 pause counts 8 blinks D10 CONFIG Config output from the FPGA but enabled as an FPGA option When RED board is not programmed OFF board is programmed 3 5 Slot Type Slot Type Closed ended PCIe slot connector all the slots are x16 mechanical Six x8 electrical slots slots 1 2 3 4 5 and 6 Three x16 electrical slots slots 0 7 and 8 ...

Page 8: ...kplanes together and to create a bridge or connection between SLOT 8 and the PCIe switch 3 7 PS_ON The board has a two pin connector for placing a shunt jumper that allows the backplane to be ON all the time when an ATX power supply is switched ON See photos below for the location of the JP5 connector on the backplane ...

Page 9: ...One Stop Systems OSS 521 Gen4 BP 9 3 8 Block Diagram ...

Page 10: ...lots ARC6 cables are required and must be attached between the edge of the board and the slot connectors under the backplane Without those ARC6 cables nothing will work in SLOT 8 Configuration 2 Two Upstream slots Slot 0 and SLOT 8 with two partitions Slot 0 Partition 1 with four Downstream slots Slot 8 Partition 2 with three Downstream slots ...

Page 11: ...One Stop Systems OSS 521 Gen4 BP 11 Configuration 3 Two backplanes are daisy chained together One Upstream slot and 15 Downstream slots ...

Page 12: ...521 Backplane with Kit vs no Kit OSS 521 backplane with kit which includes two ARC 6 cables installed to enable slot 8 see photos below Part OSS BP 521 LSKIT OSS 521 backplane with no kit installed no ARC 6 cables see photos below Part OSS BP 521 ...

Page 13: ...wnstream slots 6 x8 slots Slot 1 2 3 4 5 and 6 2 x16 slots Slot 7 and 8 Configuration 2 OSS 521 backplane is linked to two host computers see diagram below Two partitions two Upstream slots Slot 0 and SLOT 8 with a total of 7 downstream slots Slot 0 Partition 1 with four Downstream slots o 4 x8 slots Slot 1 2 3 and 4 Slot 8 Partition 2 with three Downstream slots o 2 x8 slots Slot 5 and 6 o 1 x16 ...

Page 14: ... is linked to a single host computer With a total of 15 Downstream slots 1st backplane 7 downstream slots 6 x8 slots slot 1 2 3 4 5 and 6 1 x16 slot slot 7 One non operational slot slot 8 2nd backplane 8 downstream slots 6 x8 slots slot 1 2 3 4 5 and 6 2 x16 slots slot 0 and 7 One non operational slot slot 8 ...

Page 15: ...ot a supported setup It will not work 2 Third Party FPGA Adapter cards Using a custom FPGA adapter card with the backplane is not supported OSS manufactured tested and certified an FPGA adapter card that is compatible with OSS backplane We offer a variant of proprietary OSS FPGA adapter cards that are designed to operate reliably with OSS backplanes Customer is solely responsible for troubleshooti...

Page 16: ...ing it For example a single GPU or PCIe card is seated in slot 2 on the backplane PCIe port 56 will be automatically assigned to the card Port Slot Slot Mapping 88096 Port Slot 0 0 Slot 1 48 Slot 2 56 Slot 3 64 Slot 4 72 Slot 5 80 Slot 6 88 Slot 7 32 Slot 8 16 Daisy chain If slot 8 is cabled to the daisy chain port it becomes port 16 of the 88096 regardless of upstream downstream configuration NA ...

Page 17: ... of 200O Watt 4 1 OSS PCIe HIB616 x16 card A pair of OSS Gen4 x16 cards one as host card and the other as target card 4 2 SFF 8644 Gen4 x4 Cable Use Gen 4 PCI Express PCIe rated cables This passive copper cable mates to the SFF 8644 connectors on the HIB6xx family of OSS host interface board Tested and validate with 1m 2m and 3m lengths Single or multiple cables can form larger PCIe links o x4 1 c...

Page 18: ...plane inspect the chassis for any protruding metals Turn the backplane over to access the onboard 24 PIN ATX Power connector Connect the ATX power cable to the onboard 24 PIN ATX power connector as shown from the photos below Connect the 12v Aux power cables to the 12V input connectors ...

Page 19: ...ble enclosures or expansion units that you can use for housing the OSS 521backplane 4UP enclosure Applicable for dual backplane installation EB4400 enclosure For single backplane installation Place the OSS backplane on top of the stand offs and align the screw mounting holes Secure the backplane with the screws ...

Page 20: ...x16 card Host Target card please refer to the OSS PCIe HIB616 x16installation guide https www onestopsystems com product pcie x16 gen 4 cable adapter 6 1 Target Card Installation Use the designated Target Slot Upstream Slot on the backplane when installing the card The HIB card configured as Target card will only operate in the target slot upstream slot See photo below for the correct default loca...

Page 21: ...omputer motherboard s PCIe slot Install the Host card in an x16 Gen4 PCIe slot Check the PCIe slot for any foreign debris as this can damage the card during installation Check the dipswitches on the card are set to host mode before installation Photos below are x16 dipswitches settings for host mode 6 2 1 Host Card Switch Settings x16 Configuration SW1 2 ON 5 ON SW2 1 ON 2 ON Note For more informa...

Page 22: ...Ie connector on top of the PCIe slot Carefully push the card down until it is firmly seated and secure it The photos below are example of x16 PCIe slot For easy identification on the PCIe slot specification check the label or silk screen next to the connector ...

Page 23: ...e x16 switch settings Refer to the OSS PCIe HIB616 x16 installation guide Plug in the 1st cable to Port 0 Top port on both Target and Host cards Plug in the 2nd cable to Port 1 on both Target and Host cards Plug in the 3rd cable to Port 2 on both Target and Host cards Plug in the 4th cable to Port 3 Bottom port on both Target and Host cards For more details on different cable configurations please...

Page 24: ...dpoint device or your selected PCIe cards OSS 521 backplane configured with two Upstream slots SLOT 0 and SLOT 8 o Use Slots 1 2 3 4 5 6 and 7 for your endpoint device o The slot 0 and 8 will operate in an Upstream mode and will only work with an OSS HIB card configured as target 9 Powering UP the unit Plug in the power to the expansion unit Plug in the power to the host computer Flip the power su...

Page 25: ...0 1 Verify Board LEDs After powering UP the host computer the Target SLOT LED on the backplane will lit as solid green A fully operational back plane will illuminate the following LEDs D19 Blinking green LED 1 D18 Solid green LED 0 D16 AUX power solid green ...

Page 26: ...One Stop Systems OSS 521 Gen4 BP 26 10 2 Fault LEDs RED A solid RED led on the backplane signifies a fault or an error Below photos are list of RED LED locations and definitions ...

Page 27: ...reen D10 PWR Power Blinking green D2 LED 0 Solid green D4 LED1 Solid green D6 LED2 Solid green D8 LED3 Solid green CHO Link LED Solid green C9 Aux Power Solid green x16 configuration Four x4 Cables connected CHO LED will illuminate as solid green indicates of a stable LINK between Target and Host cards When there is no link between Target and Host cards the CHO LED is OFF The C9 Aux power LED will...

Page 28: ...e either solid green or blinking green depending on the Generation of the PCIe card that is occupying the slot The Target SLOT LED will illuminate as solid green Gen 4 Solid Gen4 Link Blink 2Hz Gen3 Link Blink 1Hz Gen2 Link Blink 0 5Hz Gen1 Link Slow Blinking OFF No card installed ...

Page 29: ...hould see three instances of devices enumerated see photo below If you are only seeing one device the host card is not linking up with the target device If there are two devices detected it is an indication that the backplane is not recognized You can also run lspci m grep Device 00b2 Three instances of 00b2 signify that both host targets cards including the backplane are correctly detected If one...

Page 30: ...vvv grep c010 The output below shows that the operating system is recognizing the OSS Host card Target card and backplane The output below shows that the operating system is only detecting the Host card No link between Target card and Host card ...

Page 31: ...indows Device Manager should look something like the screenshot below You will see multiple instances of PCI standard PCI to PCI bridge or PCI Express standard Upstream Switch Ports and PCI Express standard Downstream Switch Ports Viewing devices by connection Photo below shows the backplane target card and host card are detected OSS backplane with no PCIe cards installed the downstream slots on t...

Page 32: ... 521 Gen4 BP 32 Viewing devices by type Both adapter cards host and target cards and backplane are recognized detected The devices are coming up with a Yellow Exclamation point this is normal No need to install any drivers ...

Page 33: ...ards use the following commands on the terminal window lspci vtt command Output below is a screenshot of the lspci vtt showing the OSS backplane with seven cards that are detected You can also grep the vendor name of the PCIe card For example if you have an NVIDIA GPUs run the command on the terminal window lspci vvv grep NVIDIA Screenshot below shows one ATTO PCIe card is detected in slot 7 ...

Page 34: ...lapse all the or until you see multiple subsets of PCI standard PCI to PCI bridge See screenshot below Collapse or click the or sign next to PCI standard PCI to PCI bridge or PCI Express Upstream Switch Port and Downstream Switch Port and you will find all the PCIe devices that are detected The screenshot below shows the OSS backplane is populated with five PCIe cards but showing a yellow exclamat...

Page 35: ...One Stop Systems OSS 521 Gen4 BP 35 The screenshot below shows an Ethernet card is detected and it installed in slot 1 ...

Page 36: ...cables 6 If you are still having the same issue after replacing the host card target card and cables your next step is to replace the backplane with a known good board or contact Technical Support for assistance 13 4 Broken OSS Backplane 1 If you received a brand new DOA Dead on Arrival board please contact OSS to RMA board and request for a replacement 2 If you have an out of warranty board pleas...

Page 37: ...t be responsible for any physical damage to the product or component pieces of the product such as the host or expansion interfaces for the expansion chassis that are damaged due to inadequate packing Physical damage sustained in such a situation will be repaired at the owner s expense in accordance with Out of Warranty Procedures Please protect your investment a bit more padding in a good box wil...

Page 38: ...One Stop Systems OSS 521 Gen4 BP 38 ...

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