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Hewlett Packard Enterprise ProLiant DL20 Gen10, Руководство по техническому обслуживанию и ремонту

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Description

Spare part number

Miscellaneous blanks kit

Includes:

• FlexibleLOM blank

• iLO dedicated network port blank

• Media bay blank

P07883-001

For more information on the removal and replacement procedure of the FlexibleLOM blank, see 

Removing and replacing

the FlexibleLOM blank.

For more information on the removal and replacement procedure of the dedicated iLO management port blank, see 
Removing and replacing the iLO dedicated network port blank.

For more information on the removal and replacement procedure of the media bay blank, see 

Removing and replacing

the media bay blank.

System components

Hewlett Packard Enterprise continually improves and changes product parts. For complete and current supported spare
parts information, see the Hewlett Packard Enterprise PartSurfer website:

https://www.hpe.com/info/partssurfer

Item

Description

1

Flexible Slot power supply spare parts (hot-plug)

2

Non-hot-plug power supply spare parts

3

Riser board spare parts

Table Continued

Illustrated parts catalog

10

Содержание ProLiant DL20 Gen10

Страница 1: ... Number P04758 005 Published August 2020 Edition 5 Abstract This guide describes identification and maintenance procedures diagnostic tools specifications and requirements for hardware components and software This guide is for an experienced service technician ...

Страница 2: ... S Government under vendor s standard commercial license Links to third party websites take you outside the Hewlett Packard Enterprise website Hewlett Packard Enterprise has no control over and is not responsible for information outside the Hewlett Packard Enterprise website Acknowledgments Intel Pentium Xeon Intel Inside Intel Core and the Intel Inside logo are trademarks of Intel Corporation in ...

Страница 3: ...ts 12 Heatsink spare part 12 First generation Intel processor spare parts 12 System battery spare part 13 DIMM spare parts 13 Fan spare part 14 Power distribution board spare part 14 Server options 14 Energy pack spare part 15 HPE Trusted Platform Module 2 0 spare part 15 Drive backplane spare parts 16 Drive cable spare parts 16 System cable spare parts 17 Power cable spare part 17 Customer self r...

Страница 4: ... the Smart Array standup storage controller 63 Removing and replacing a power supply blank 64 Removing and replacing a Flexible Slot power supply 65 Removing and replacing the non hot plug power supply 69 Removing and replacing the power distribution board 71 Removing and replacing the FlexibleLOM blank 72 Removing and replacing the iLO dedicated network port blank 73 Removing and replacing the se...

Страница 5: ...el LEDs and buttons 116 Server UID LED 117 UID button functionality 117 Front panel LED power fault codes 117 Rear panel components 117 Rear panel LEDs 118 System board components 119 System maintenance switch descriptions 120 DIMM slot locations 121 DIMM label identification 121 PCIe riser slot definitions 123 Drive LED definitions 123 Low profile LFF drive LED definitions 124 Smart Carrier SC dr...

Страница 6: ...hot plug Power Supply 94 efficiency 145 HPE 500W Flex Slot Platinum Hot plug Low Halogen Power Supply 146 HPE 800W Flex Slot 48VDC Hot plug Low Halogen Power Supply 146 Websites 148 Support and other resources 149 Accessing Hewlett Packard Enterprise Support 149 Accessing updates 149 Customer self repair 150 Remote support 150 Warranty information 150 Regulatory information 151 Documentation feedb...

Страница 7: ...current supported spare parts information see the Hewlett Packard Enterprise PartSurfer website https www hpe com info partssurfer Item Description 1 FlexibleLOM blank spare part 2 iLO dedicated network port blank spare part 3 Access panel spare part 4 M 2 air guider spare part 5 DIMM guard spare part 6 Quick release latch ear spare part 7 Front bezel spare part Table Continued Illustrated parts c...

Страница 8: ...more information on the removal and replacement procedure of DIMM guard see Removing and replacing the DIMM guard For more information on the removal and replacement procedure of system air baffle see Removing and replacing the M 2 air guider Quick release latch ear spare part Customer self repair Mandatory Description Spare part number Quick release latch ears P07882 001 For more information on t...

Страница 9: ...ving and replacing the energy pack holder Power supply blank spare part Customer self repair Mandatory Description Spare part number Power supply blank 775423 001 For more information on the removal and replacement procedures of power supply blank see Removing and replacing a power supply blank Serial port blank spare part Customer self repair Mandatory Description Spare part number Serial port bl...

Страница 10: ...nd replacing the iLO dedicated network port blank For more information on the removal and replacement procedure of the media bay blank see Removing and replacing the media bay blank System components Hewlett Packard Enterprise continually improves and changes product parts For complete and current supported spare parts information see the Hewlett Packard Enterprise PartSurfer website https www hpe...

Страница 11: ... the removal and replacement procedures see Removing and replacing a Flexible Slot power supply Non hot plug power supply spare parts Customer self repair mandatory Description Spare part number ATX 290W Non hot plug Power Supply 92 efficiency P07898 001 ATX 290W Platinum Non hot plug Power Supply 94 efficiency P21834 001 For more information on the removal and replacement procedures see Removing ...

Страница 12: ... Xeon E 2100 Family Intel Core i3 8300 Intel Pentium Gold G5400 processor 2 Embedded with HPE 361i 1Gb 2 Port Network Adapter and only supports the Intel Xeon E 2200 Family Intel Core i3 9100 Intel Pentium Gold G5420 processor For more information on the removal and replacement procedures see Removing and replacing the system board Heatsink spare part Customer self repair Optional Description Spar...

Страница 13: ...19115 001 3 70 GHz Intel Core i3 8300 4C 62 W4 P07866 001 Intel Pentium Gold Family processors 3 70 GHz Intel Pentium Gold G5400 2C 58 W4 P07869 001 3 80 GHz Intel Pentium Gold G5420 2C 54 W3 P19425 001 1 These processors are supported on the P07884 001 system board assembly spare 2 These processors are supported on the P19256 001 system board assembly spare 3 This processor is supported on the P1...

Страница 14: ...rocedures see Removing and replacing a fan Power distribution board spare part Customer self repair Mandatory Description Spare part number Power distribution board P07887 001 For more information on the removal and replacement procedures see Removing and replacing the power distribution board Server options Hewlett Packard Enterprise continually improves and changes product parts For complete and...

Страница 15: ...cable spare parts 7 System cable spare parts 8 Power cable spare part Not shown Energy pack spare part Customer self repair Mandatory Description Spare part number HPE Smart Storage Battery 12 W 230 mm cable 878641 001 For more information on the removal and replacement procedures see Removing and replacing the energy pack HPE Trusted Platform Module 2 0 spare part Customer self repair No Illustra...

Страница 16: ...r bay SFF drive backplane For more information on the removal and replacement procedure of the Two bay SFF drive backplane see Removing and replacing the two bay SFF drive backplane Drive cable spare parts Customer self repair Mandatory Description Spare part number Two bay LFF drive backplane cable kit Includes Two bay LFF drive backplane power cable Two bay LFF drive backplane Mini SAS cable P07...

Страница 17: ...ion Spare part number Chassis intrusion detection switch cable 875570 001 Serial port cable to M 2 SSD dedicated iLO serial port enablement board P07896 001 Slot 1 M 2 SATA Card to system board cables Include Slot 1 M 2 SATA card to system board cable Slot 2 M 2 SATA card to system board cable Two bay LFF drive backplane Mini SAS to Smart Array Controller AROC cable P07895 001 Power cable spare pa...

Страница 18: ... part back to Hewlett Packard Enterprise within a defined period of time normally five 5 business days The defective part must be returned with the associated documentation in the provided shipping material Failure to return the defective part may result in Hewlett Packard Enterprise billing you for the replacement With a customer self repair Hewlett Packard Enterprise will pay all shipping and pa...

Страница 19: ...se identifica il guasto come riparabile mediante un ricambio CSR Hewlett Packard Enterprise lo spedirà direttamente al cliente per la sostituzione Vi sono due categorie di parti CSR Obbligatorie Parti che devono essere necessariamente riparate dal cliente Se il cliente ne affida la riparazione ad Hewlett Packard Enterprise deve sostenere le spese di spedizione e di manodopera per il servizio Opzio...

Страница 20: ...lefon helfen lassen Den Materialien von Hewlett Packard Enterprise die mit einem CSR Ersatzteil geliefert werden können Sie entnehmen ob das defekte Teil an Hewlett Packard Enterprise zurückgeschickt werden muss Wenn es erforderlich ist das defekte Teil an Hewlett Packard Enterprise zurückzuschicken müssen Sie dies innerhalb eines vorgegebenen Zeitraums tun in der Regel innerhalb von fünf 5 Geschä...

Страница 21: ...a empresa de transporte que se utilice para dicho servicio Para obtener más información acerca del programa de Reparaciones del propio cliente de Hewlett Packard Enterprise póngase en contacto con su proveedor de servicios local Servicio de garantía exclusivo de componentes La garantía limitada de Hewlett Packard Enterprise puede que incluya un servicio de garantía exclusivo de componentes Según l...

Страница 22: ...Packard Enterprise ou fornecedores parceiros da Hewlett Packard Enterprise concluir que o reparo pode ser efetuado pelo uso de uma peça CSR a Hewlett Packard Enterprise enviará a peça diretamente ao cliente Há duas categorias de peças CSR Obrigatória Peças cujo reparo feito pelo cliente é obrigatório Se desejar que a Hewlett Packard Enterprise substitua essas peças serão cobradas as despesas de tr...

Страница 23: ...s termos do serviço de garantia apenas para peças a Hewlett Packard Enterprise fornece as peças de reposição sem cobrar nenhuma taxa No caso desse serviço a substituição de peças CSR é obrigatória Se desejar que a Hewlett Packard Enterprise substitua essas peças serão cobradas as despesas de transporte e mão de obra do serviço Customer self repair 23 ...

Страница 24: ...Customer self repair 24 ...

Страница 25: ...Customer self repair 25 ...

Страница 26: ...Customer self repair 26 ...

Страница 27: ...when setting up the system or handling parts A discharge of static electricity from a finger or other conductor may damage system boards or other static sensitive devices This type of damage may reduce the life expectancy of the device Procedure Avoid hand contact by transporting and storing products in static safe containers Keep electrostatic sensitive parts in their containers until they arrive...

Страница 28: ...ry from a hot component allow the surface to cool before touching This symbol indicates that the component exceeds the recommended weight for one individual to handle safely WARNING To reduce the risk of personal injury or damage to the equipment observe local occupational health and safety requirements and guidelines for manual material handling These symbols on power supplies or systems indicate...

Страница 29: ...nd keeps the server in operation during a power failure CAUTION To prevent damage to electrical components properly ground the server before beginning any installation procedure Improper grounding can cause electrostatic discharge CAUTION To avoid data loss Hewlett Packard Enterprise recommends that you back up all server data before installing or removing a hardware option or performing a server ...

Страница 30: ...r The full weight of the rack rests on the leveling jacks The stabilizing feet are attached to the rack if it is a single rack installation The racks are coupled together in multiple rack installations WARNING To reduce the risk of personal injury or equipment damage when unloading a rack At least two people are needed to safely unload the rack from the pallet An empty 42U rack can weigh as much a...

Страница 31: ...e system To power down the server use one of the following methods Press and release the Power On Standby button This method initiates a controlled shutdown of applications and the OS before the server enters standby mode Press and hold the Power On Standby button for more than 4 seconds to force the server to enter standby mode This method forces the server to enter standby mode without properly ...

Страница 32: ...e extending a component from the rack Prerequisites Before you perform this procedure make sure that you have a T 25 Torx screwdriver available Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Do one of the fo...

Страница 33: ...he following a Open the latches on both sides of the server b If necessary loosen the shipping screws c Slide the server out of the rack 6 Extend the server on the rack rails until the server rail release latches are engaged Removal and replacement procedures 33 ...

Страница 34: ...higher than chest level Use caution when installing the server in or removing the server from the rack it is unstable when not fastened to the rails Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Extend the ...

Страница 35: ...ore you perform this procedure make sure that you have a T 15 Torx screwdriver available Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel a If necessar...

Страница 36: ...osen the mounting rails on the rack columns For round hole or square hole racks Remove the rail pins from the rack column holes For threaded hole rack Remove the mounting screws and then remove the rail pins from the rack column holes Removal and replacement procedures 36 ...

Страница 37: ...s Remove the riser cage CAUTION To prevent damage to the server or expansion boards power down the server and disconnect all power cords before removing or installing the riser cage Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cab...

Страница 38: ...erform this procedure make sure that you have a T 15 Torx screwdriver available Procedure 1 With access panel latch open insert the guide pin on the chassis through the hole on the access panel latch 2 Close the access panel latch The access panel slides to a closed position 3 Tighten the access panel latch screw Removal and replacement procedures 38 ...

Страница 39: ...e Procedure 1 Install the server into the rack a Insert the server sliding rails into the rack mounting rails b Slide the server into the rack until the chassis ears are engage with the rack column 2 Do one of the following For a server that has thumbscrew chassis ears tighten the captive thumbscrews Removal and replacement procedures 39 ...

Страница 40: ...liding the server in and out of the rack secure the power cord in the strain relief strap attached to the power supply handle a Connect the power cord to the power supply b Unwrap the strain relief strap from the power supply handle CAUTION Avoid tight bend radii to prevent damaging the internal wires of a power cord or a server cable Never bend power cords and server cables tight enough to cause ...

Страница 41: ...d through the strain relief clip a Pull the release tab and then slide the clip backward to avoid having the power cord connection blocked by the clip b Connect the power cord to the power supply c Press the top part of the clip and then pull the clip open d Position the power cord inside the clip and then close the clip Removal and replacement procedures 41 ...

Страница 42: ...he rack rail use the hook and loop strap 7 Connect each power cord to the power source 8 Power up the server Removing and replacing the front bezel Procedure 1 If installed unlock and remove the Kensington security lock For more information see the lock documentation 2 Press and hold the front bezel latch Removal and replacement procedures 42 ...

Страница 43: ...cement procedure Improper grounding can cause electrostatic discharge CAUTION Do not operate the server for long periods with the access panel open or removed Operating the server in this manner results in improper airflow and improper cooling that can lead to thermal damage Prerequisites Before you perform this procedure make sure that you have a T 15 Torx screwdriver available Procedure 1 If ins...

Страница 44: ...component reverse the removal procedure Removing and replacing the DIMM guard Prerequisites Before you perform this procedure make sure that you have the following tools available T 10 Torx screwdriver T 15 Torx screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from ...

Страница 45: ...thumbscrew chassis ears do the following a Remove the screws b Pull the thumbscrew ear away from the chassis For a server that has quick release latch chassis ears Remove the quick release latch ears 8 Remove the front bezel 9 If installed remove the processor air baffle Removal and replacement procedures 45 ...

Страница 46: ...move the heatsink 12 Remove the DIMM guard To replace the component reverse the removal procedures Removing and replacing the M 2 air guider Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power Removal and replacement procedures 46 ...

Страница 47: ... release latch ear Prerequisites Before you perform this procedure make sure that you have a T 10 Torx screwdriver available Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 R...

Страница 48: ...eplacing an SFF drive blank CAUTION To prevent improper cooling and thermal damage do not operate the server unless all bays are populated with either a component or a blank Procedure 1 If installed remove the front bezel 2 Remove the SFF drive blank To replace the SFF drive blank while pressing the release latch slide the component into the bay until it is fully seated Removing and replacing driv...

Страница 49: ...nitions 4 Remove the drive To replace the component reverse the removal procedure Removing and replacing an SFF hot plug drive CAUTION To prevent improper cooling and thermal damage do not operate the server unless all bays are populated with either a component or a blank Procedure 1 Back up all server data on the drive 2 If installed remove the front bezel 3 Determine the status of the drive from...

Страница 50: ... remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Disconnect all existing drive cage cables 8 Remove the non hot plug drive cage 9 Remove the non hot plug drive Removal and r...

Страница 51: ...1 screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Disconnect all existing optical drive cables 8 Remove the optical drive cage assembly ...

Страница 52: ... component reverse the removal procedure Removing and replacing the optical drive from an LFF chassis Prerequisites Before you perform this procedure make sure that you have the following tools available T 10 Torx screwdriver Phillips No 1 screwdriver Removal and replacement procedures 52 ...

Страница 53: ...ct all existing optical drive cables 8 Remove the optical drive from the optical drive bay Retain the screw for future use To replace the component reverse the removal procedure Removing and replacing the media bay blank CAUTION To prevent improper cooling and thermal damage do not operate the server unless all bays are populated with either a component or a blank Prerequisites Before you perform ...

Страница 54: ...the access panel 7 Remove the media bay blank a Remove the screws securing the media bay blank Retain the screws for future use b Disengage the media bay blank c Remove the media bay blank To replace the component reverse the removal procedure Removing and replacing the two bay LFF drive backplane Prerequisites Before you perform this procedure make sure that you have the following tools available...

Страница 55: ... server 5 Remove the server from the rack 6 Remove the inner left rail attached to the chassis 7 Remove the access panel 8 Do one of the following For a server that has thumbscrew chassis ears do the following a Remove the screws b Pull the thumbscrew ear away from the chassis For a server that has quick release latch chassis ears Remove the quick release latch ears 9 Remove the front bezel Remova...

Страница 56: ...e 11 Remove all drives 12 Remove the two bay LFF drive cage a Remove all the screws securing the drive cage to the chassis b Slide the drive cage out of the chassis 13 Remove the two bay LFF drive backplane Removal and replacement procedures 56 ...

Страница 57: ... T 15 Torx screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the inner left rail attached to the chassis 7 Remove the access panel 8 Remove the front bezel R...

Страница 58: ...ne 10 Remove all drives 11 Remove the four bay SFF drive cage a Remove all the screws securing the drive cage to the chassis b Slide the drive cage out of the chassis 12 Remove the four bay SFF drive backplane Removal and replacement procedures 58 ...

Страница 59: ...e server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Disconnect all cables from the drive backplane 8 Remove all drives 9 Remove the two bay SFF drive cage a Remove all the screws securing the drive cage to the chass...

Страница 60: ...event improper cooling and thermal damage do not operate the server unless all PCI slots have either an expansion slot cover or an expansion board installed CAUTION Before replacing a DIMM expansion board or other similar PCA components due to a perceived hardware error make sure first that the component is firmly seated in the slot Do not bend or flex circuit boards when reseating components Remo...

Страница 61: ...er source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Disconnect all cables connected to existing expansion board 8 Remove the riser cage 9 Remove the expansion board installed in slot 2 of the riser cage 10 Remove the expansion board installed in slot 1 of the riser cage To replace th...

Страница 62: ...ards when reseating components Prerequisites Before you perform this procedure make sure that you have a T 15 Torx screwdriver available Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from ...

Страница 63: ...make sure first that the component is firmly seated in the slot Do not bend or flex circuit boards when reseating components Prerequisites Before you perform this procedure make sure that you have the following tools available T 10 Torx screwdriver T 15 Torx screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the ...

Страница 64: ...Removing and replacing a power supply blank WARNING To reduce the risk of personal injury from hot surfaces allow the power supply or power supply blank to cool before touching it CAUTION To prevent improper cooling and thermal damage do not operate the server unless all bays are populated with either a component or a blank Procedure 1 Remove the power supply blank Removal and replacement procedur...

Страница 65: ...for power redundancy Cause the system to become unstable and might shut down To ensure access to all available features all power input modules in the same server should have the same output and efficiency ratings Verify that all power input modules have the same part number and label color Prerequisites Before you perform this procedure make sure that you have a Phillips No 1 screwdriver availabl...

Страница 66: ... AC power supply DC power supply 3 For an AC power supply do the following a Disconnect the power cord from the power supply Removal and replacement procedures 66 ...

Страница 67: ...ply 4 For a DC power supply do the following a Slide the power supply out of the bay just enough to access the ground cable screw b Detach the ground earthed cable from the power supply Removal and replacement procedures 67 ...

Страница 68: ...c Remove the terminal block connector from the power supply d Remove the power supply Removal and replacement procedures 68 ...

Страница 69: ... electrical outlet and the point where the cord extends from the server WARNING To reduce the risk of injury from electric shock hazards do not open power supplies Refer all maintenance upgrades and servicing to qualified personnel WARNING To reduce the risk of personal injury from hot surfaces allow the drives and the internal system components to cool before touching them CAUTION To prevent dama...

Страница 70: ...r 5 Remove the server from the rack 6 Remove the inner left rail attached to the chassis 7 Remove the access panel 8 Disconnect the power supply cables from the system board 9 Release the power cord from the strain relief clip 10 Remove the power supply To replace the components reverse the removal procedure Removal and replacement procedures 70 ...

Страница 71: ...ilable Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Disconnect all cables from the power distribution board 8 Do one of the following a Remove th...

Страница 72: ...le Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Remove the FlexibleLOM riser cage 8 Remove the FlexibleLOM blank Removal and replacement procedur...

Страница 73: ...l cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Remove the riser cage 8 Remove the iLO dedicated network port blank To replace the component reverse the removal procedure Removing and replacing the serial port blank Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b D...

Страница 74: ...nts due to a perceived hardware error make sure first that the component is firmly seated in the slot Do not bend or flex circuit boards when reseating components Prerequisites Before you perform this procedure make sure that you have the following tools available T 10 Torx screwdriver T 15 Torx screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power ...

Страница 75: ...lled remove the FlexibleLOM adapter installed in slot 1 of the riser cage 11 Remove the FlexibleLOM riser board To replace the component reverse the removal procedures Removing and replacing the PCIe riser board CAUTION To prevent improper cooling and thermal damage do not operate the server unless all PCI slots have either an expansion slot cover or an expansion board installed Removal and replac...

Страница 76: ...orx screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Remove the PCIe riser cage 8 If installed remove the expansion board installed in sl...

Страница 77: ...ure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Remove the riser cage 8 Remove the M 2 air guider 9 If installed disconnect the serial port cable 10 If in...

Страница 78: ...ar end of the board in the upward direction c Disconnect the board from the slot To replace the component reverse the removal procedures Removing and replacing the M 2 SSD M 2 SSD might be installed on the enablement board or the system board Prerequisites Before you perform this procedure make sure that you have a Phillips No 1 screwdriver available Removal and replacement procedures 78 ...

Страница 79: ... server from the rack 6 Remove the access panel 7 Remove the riser cage 8 Remove the M 2 air guider 9 Remove the M 2 SSD a Remove the SSD mounting screw b Lift the M 2 SSD at a 45 angle c Remove the M 2 SSD from the M 2 SSD slot To replace the component reverse the removal procedures Removing and replacing the energy pack Procedure 1 If installed remove the front bezel 2 Power down the server 3 Re...

Страница 80: ... the energy pack from the holder a Disconnect the energy pack cable b Gently pull the release latch c Slide the energy pack out of the holder To replace the component reverse the removal procedures Removing and replacing the energy pack holder Prerequisites Before you perform this procedure make sure that you have a T 15 Torx screwdriver available Procedure 1 If installed remove the front bezel 2 ...

Страница 81: ...der To replace the component reverse the removal procedures Removing and replacing the chassis intrusion detection switch Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remo...

Страница 82: ...re Removing and replacing a fan Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 If installed remove the processor air baffle before removing fan 1 o...

Страница 83: ...f DIMM that is supported in the server First generation Intel Xeon Scalable processors support DDR4 2666 DIMMs Second generation Intel Xeon Scalable processors support DDR4 2666 DIMMs or DDR4 2933 DIMMs Mixing DIMM types is not supported Install either all DDR4 2666 DIMMs or all DDR4 2933 DIMMs in the server Removal and replacement procedures 83 ...

Страница 84: ... power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Remove the DIMM To replace the component reverse the removal procedure For DIMM configuration information see the Hewlett Packard Enterprise website Removing and replacing a heatsink Removing the heatsink WAR...

Страница 85: ...rver 3 Remove all power a Disconnect each power cord from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 If installed remove the processor air baffle 8 Remove the M 2 air guider 9 Allow the heatsink to cool 10 Remove the heatsink a Loosen one pair of diagonally opposite s...

Страница 86: ...ing any installation removal or replacement procedure Improper grounding can cause electrostatic discharge Prerequisites Before you perform this procedure make sure that you have the following tools available T 15 Torx screwdriver Alcohol swab Procedure 1 Clean the old thermal grease from the processor with the alcohol swab Allow the alcohol to evaporate before continuing 2 Remove the thermal inte...

Страница 87: ...other pair of screws c Finish the installation by completely tightening the screws in the same sequence 4 If removed install the processor air baffle 5 Install the M 2 air guider 6 Install the access panel 7 Install the server into the rack 8 Connect all peripheral cables to the server 9 Connect the power cords Removal and replacement procedures 87 ...

Страница 88: ...ns before beginning any installation removal or replacement procedure Improper grounding can cause electrostatic discharge Prerequisites Before you perform this procedure make sure that you have the following items available T 15 Torx screwdriver Torque screwdriver Procedure 1 If installed remove the front bezel 2 Power down the server 3 Remove all power a Disconnect each power cord from the power...

Страница 89: ...n the other pair of screws b Completely loosen all screws in the same sequence c Remove the heatsink from the processor backplate 11 Open the processor load plate a Push the processor locking lever down to unclip it and then pivot it to the vertical position callout 1 b Open the processor load plate callout 2 Removal and replacement procedures 89 ...

Страница 90: ... VERY FRAGILE AND EASILY DAMAGED Any damage to them might require replacing the system board 12 Do not touch the socket contacts or the bottom of the processor 13 Hold the processor by the edges and then lift it out of the socket Removal and replacement procedures 90 ...

Страница 91: ...c precautions before beginning any installation removal or replacement procedure Improper grounding can cause electrostatic discharge Prerequisites Before you perform this procedure make sure that you have the following items available T 15 Torx screwdriver Torque screwdriver Alcohol wipe 1 0 gm 0 5 ml or two 0 5 gm 0 25 ml of thermal grease Procedure 1 Do not touch the socket contacts or the bott...

Страница 92: ...ket notches with the processor notches Pin 1 indicator on the processor and the socket b Lower the processor straight down without tilting or sliding the processor in the socket Make sure that the processor is properly seated in the socket Removal and replacement procedures 92 ...

Страница 93: ...rocessor load plate callout 1 and then engage the processor locking lever callout 2 4 Use an alcohol wipe to remove the existing thermal grease from the heatsink Allow the alcohol to evaporate before continuing 5 Apply new thermal grease to the processor in the following pattern to ensure even distribution Use the full contents of the thermal grease syringe 6 Install the heatsink Removal and repla...

Страница 94: ...uider 9 Install the access panel 10 Install the server into the rack 11 Connect all peripheral cables to the server 12 Connect the power cords a Connect each power cord to the server b Connect each power cord to the power source 13 Power up the server 14 If removed install the front bezel Removing and replacing the system board Removing the system board Prerequisites Before you perform this proced...

Страница 95: ...rd from the power source b Disconnect each power cord from the server 4 Disconnect all peripheral cables from the server 5 Remove the server from the rack 6 Remove the access panel 7 Remove the front bezel 8 Remove the M 2 air guider 9 If installed remove the processor air baffle Removal and replacement procedures 95 ...

Страница 96: ... 14 If installed remove the M 2 SSD 15 If installed remove the Smart Array modular controller AROC 16 Allow the heatsink to cool 17 Remove the heatsink a Loosen one pair of diagonally opposite screws halfway then loosen the other pair of screws b Completely loosen all screws in the same sequence c Remove the heatsink from the processor backplate Removal and replacement procedures 96 ...

Страница 97: ...he vertical position callout 1 b Open the processor load plate callout 2 CAUTION THE PINS ON THE PROCESSOR SOCKET AND ON THE PROCESSOR ARE VERY FRAGILE AND EASILY DAMAGED Any damage to them might require replacing the system board 20 Do not touch the socket contacts or the bottom of the processor Removal and replacement procedures 97 ...

Страница 98: ...21 Hold the processor by the edges and then lift it out of the socket 22 Remove the system board screws Removal and replacement procedures 98 ...

Страница 99: ...e the system board away from the real panel Replacing the system board Prerequisites Before you perform this procedure make sure that you have the following items available T 15 Torx screwdriver Alcohol wipe 1 0 gm 0 5 ml or two 0 5 gm 0 25 ml of thermal grease Removal and replacement procedures 99 ...

Страница 100: ...ch it to the real panel b Press down the system board on the chassis 2 Install the system board screws 3 Open the processor load plate a Push the processor locking lever down to unclip and then lift it upwards callout 1 b Open the processor load plate callout 2 Removal and replacement procedures 100 ...

Страница 101: ...THE PROCESSOR ARE VERY FRAGILE AND EASILY DAMAGED Any damage to them might require replacing the system board 4 Do not touch the socket contacts or the bottom of the processor 5 Remove the processor socket cover Removal and replacement procedures 101 ...

Страница 102: ...e processor in the socket Make sure that the processor is properly seated in the socket CAUTION The processor load plate and locking lever should close without resistance Forcing to close these parts can damage the processor and the socket This damage might require replacing the system board 7 Close the processor load plate callout 1 and then engage the processor locking lever callout 2 Removal an...

Страница 103: ...to ensure even distribution Use the full contents of the thermal grease syringe 10 Install the DIMM guard 11 Install the heatsink a Position the heatsink on the processor backplate b Tighten one pair of diagonally opposite screws halfway then tighten the other pair of screws c Finish the installation by completely tightening the screws in the same sequence Removal and replacement procedures 103 ...

Страница 104: ... firmware including option cards and embedded devices is updated to the same versions to ensure that the latest drivers are being used 23 Re enter any Secure Boot Keys that were previously added in the Secure Boot configuration 24 Re enter the server serial number and the product ID Re entering the server serial number and product ID After you replace the system board the server serial number and ...

Страница 105: ...eal time clock If this battery is not properly handled a risk of the fire and burns exists To reduce the risk of personal injury Do not attempt to recharge the battery Do not expose the battery to temperatures higher than 60 C 140 F Do not expose the battery to extremely low air pressure as it might lead to explosion or leakage of flammable liquid or gas Do not disassemble crush puncture short ext...

Страница 106: ... battery a Use a small flat bladed nonconductive tool to press the battery latch callout 1 b Remove the system battery from the socket callout 2 9 Install the system battery a With the side of the battery showing the sign facing up insert the battery into the socket callout 1 b Press the system battery down until it clicks into place callout 2 10 Install the access panel 11 Install the server into...

Страница 107: ... or an authorized service provider HPE Trusted Platform Module 2 0 Gen10 Option The HPE Trusted Platform Module 2 0 Gen10 Option is not a customer removable part CAUTION If the TPM is removed from the original server and powered up on a different server data stored in the TPM including keys will be erased If you suspect a TPM board failure leave the TPM installed and remove the system board Contac...

Страница 108: ...nterpreting and resolving error messages Error Message Guide for HPE ProLiant Gen10 Plus servers and HPE Synergy provides a list of error messages and information to assist with interpreting and resolving error messages Integrated Management Log Messages and Troubleshooting Guide for HPE ProLiant Gen10 and Gen10 Plus servers and HPE Synergy provides IML messages and associated troubleshooting info...

Страница 109: ...cure Boot that enables the system firmware option card firmware operating systems and software collaborate to enhance platform security UEFI Graphical User Interface GUI An Embedded UEFI Shell that provides a preboot environment for running scripts and tools Boot support for option cards that only support a UEFI option ROM Selecting the boot mode This server provides two Boot Mode configurations U...

Страница 110: ...l signature to execute during the boot process Operating systems must support Secure Boot and have an EFI boot loader signed with one of the authorized keys to boot For more information about supported operating systems see https www hpe com servers ossupport You can customize the certificates embedded in the UEFI BIOS by adding or removing your own certificates either from a management console di...

Страница 111: ...Intelligent Provisioning prepares the system for installing original licensed vendor media and Hewlett Packard Enterprise branded versions of OS software Intelligent Provisioning also prepares the system to integrate optimized server support software from the Service Pack for ProLiant SPP SPP is a comprehensive systems software and firmware solution for ProLiant servers server blades their enclosu...

Страница 112: ...ewlett Packard Enterprise website https www hpe com info ossupport HPE Insight Remote Support Hewlett Packard Enterprise strongly recommends that you register your device for remote support to enable enhanced delivery of your Hewlett Packard Enterprise warranty HPE support services or Hewlett Packard Enterprise contractual support agreement Insight Remote Support supplements your monitoring contin...

Страница 113: ...for configuration tasks Some of the advanced tasks are available in only one format The diagnostic features in HPE SSA are also available in the standalone software HPE Smart Storage Administrator Diagnostics Utility CLI During the initial provisioning of the server or compute module an array is required to be configured before the operating system can be installed You can configure the array usin...

Страница 114: ...ve optional 2 Serial number iLO information pull tab 3 iLO Service Port 4 USB 3 0 port 5 LFF non hot plug drive cage Two bay LFF hot plug drive model Item Description 1 Optical drive optional 2 Serial number iLO information pull tab 3 iLO Service Port 4 USB 3 0 port 5 LFF hot plug drives Component identification 114 ...

Страница 115: ...rt 4 SFF hot plug drives Serial number iLO information pull tab The serial number iLO information pull tab is double sided One side shows the server serial number and the customer asset tag label The other side shows the default iLO account information and QR code label Use a mobile device to scan the QR code label to display the server mobile product page https www hpe com qref dl20gen10 This pag...

Страница 116: ...LED1 Solid blue Activated Flashing blue 1 flash per second Remote management or firmware upgrade in progress 4 flashes per second iLO manual reboot sequence initiated 8 flashes per second iLO manual reboot sequence in progress Off Deactivated 1 When the LEDs described in this table flash simultaneously a power fault has occurred For more information see Front panel LED power fault codes 2 If the h...

Страница 117: ...e https www hpe com support ilo docs Front panel LED power fault codes The following table provides a list of power fault codes and the subsystems that are affected Not all power faults are used by all servers Subsystem LED behavior System board 1 flash Processor 2 flashes Memory 3 flashes Riser board PCIe slots 4 flashes FlexibleLOM 5 flashes Storage controllers 6 flashes System board PCIe slots ...

Страница 118: ...PCIe riser slot definitions 2 When a FlexibleLOM adapter is installed in a server with default iLO settings the shared iLO port function is assigned to port 1 of the FlexibleLOM adapter Rear panel LEDs Item LED Status Definition 1 UID Solid blue Activated Flashing blue System is being managed remotely Off Deactivated 2 Power supply Solid green Normal Off System is off or power supply has failed 3 ...

Страница 119: ... No network link 5 iLO status Solid green Linked to network Flashing green Network active Off No network activity 6 iLO link Solid green Network link Off No network link System board components Item Description 1 PCIe riser connector1 2 System maintenance switch 3 M 2 SSD slot Table Continued Component identification 119 ...

Страница 120: ...ort 1 17 x4 SATA port Mini SAS connector 18 Fan connector 3 19 Controller backup power connector for slot 2 20 TPM connector 21 Smart Array modular controller connector AROC 22 Internal USB 3 0 connector 1 For more information on the supported riser board slots see PCIe riser slot definitions System maintenance switch descriptions Position Default Function S11 Off Off iLO 5 security is enabled On ...

Страница 121: ...facturing defaults 3 When the system maintenance switch position 6 is set to the On position and Secure Boot is enabled some configurations cannot be restored For more information see Secure Boot DIMM slot locations The arrow in the illustration points to the front of the server DIMM label identification To determine DIMM characteristics see the label attached to the DIMM The information in this s...

Страница 122: ...GB 128 GB 2 Rank 1R Single rank 2R Dual rank 4R Quad rank 8R Octal rank 3 Data width on DRAM x4 4 bit x8 8 bit x16 16 bit 4 Memory generation PC4 DDR4 5 Maximum memory speed 2133 MT s 2400 MT s 2666 MT s 2933 MT s Table Continued Component identification 122 ...

Страница 123: ...bility see the HPE DDR4 SmartMemory QuickSpecs on the Hewlett Packard Enterprise website https www hpe com support DDR4SmartMemoryQS PCIe riser slot definitions FlexibleLOM riser board Item Description Supported options 1 FlexibleLOM slot PCIe3 x8 with NCSI FlexibleLOM adapter 2 Slot 2 PCIe3 x16 8 4 1 Full height half length expansion boards Two slot PCIe riser board Item Description Supported opt...

Страница 124: ...per second A predictive failure alert has been received for this drive Replace the drive as soon as possible 2 Online Activity Solid green The drive is online and has no activity Flashing green 4 flashes per second The drive is operating normally and has activity Flashing green 1 flash per second The drive is doing one of the following Rebuilding Performing a RAID migration Performing a strip size...

Страница 125: ... a logical drive to fail 4 Drive status Solid green The drive is a member of one or more logical drives Flashing green The drive is doing one of the following Rebuilding Performing a RAID migration Performing a strip size migration Performing a capacity expansion Performing a logical drive extension Erasing Spare part activation Flashing amber green The drive is a member of one or more logical dri...

Страница 126: ...Drive bay numbering Two bay LFF non hot plug drive model Two bay LFF hot plug drive model Four bay SFF hot plug drive model Six bay SFF hot plug drive model Component identification 126 ...

Страница 127: ...vior The server supports only nonredundant fan mode If a single fan fails or is missing the following behaviors are exhibited The health LED flashes amber The operating system performs a graceful shutdown Component identification 127 ...

Страница 128: ...ngth of the cable Use the internal cable management features to properly route and secure the cables When routing cables be sure that the cables are not in a position where they can be pinched or crimped Avoid tight bend radii to prevent damaging the internal wires of a power cord or a server cable Never bend power cords and server cables tight enough to cause a crease in the sheathing Make sure t...

Страница 129: ...aining them inside the server can restrict airflow If you intend to use the removed cables later label and store them for future use Storage cabling Non hot plug drive cabling Two bay LFF non hot plug drive for embedded controller cabling Cabling 129 ...

Страница 130: ...bay LFF non hot plug drive for Smart Array modular controller AROC cabling Cable color Description Orange SATA cable from drive backplane to modular controller AROC port 1 Blue Drive backplane power cable Two bay LFF non hot plug drive for type p controller cabling Slot 1 Cabling 130 ...

Страница 131: ...Blue Drive backplane power cable Slot 2 Cable color Description Orange SATA cable from drive backplane to controller port 2 Blue Drive backplane power cable Hot plug drive cabling Two bay LFF hot plug drive cabling Two bay LFF hot plug drive for embedded controller cabling Cabling 131 ...

Страница 132: ...ini SAS cable Two bay LFF hot plug drive for Smart Array modular controller AROC cabling Cable color Description Orange Mini SAS cable from drive backplane to AROC port 1 Blue Drive backplane power cable Two bay LFF hot plug drive for type p controller cabling Slot 1 Cabling 132 ...

Страница 133: ...ler port 1 Blue Drive backplane power cable Slot 2 Cable color Description Orange Mini SAS cable from drive backplane to controller port 2 Blue Drive backplane power cable Four bay SFF hot plug drive cabling Four bay SFF hot plug drive for embedded controller cabling Cabling 133 ...

Страница 134: ...ay SFF hot plug drive for embedded controller cabling Cable color Description Orange Four bay SFF drive backplane power cable Blue Mini SAS cable Gold Two bay SFF to four bay SFF drive backplane power cable Pink SATA cable and drive sideband cable 4 2 bay SFF hot plug drive for Smart Array modular controller AROC cabling Cabling 134 ...

Страница 135: ...ble Pink Two bay to four bay SFF drive backplane power cable 4 2 bay SFF hot plug drive for type p controller cabling Slot 1 Cable color Description Orange Mini SAS cable from four bay SFF drive backplane to controller port 1 Blue Mini SAS cable from two bay SFF drive backplane to controller port 2 Gold Two bay to four bay SFF drive backplane power cable Pink Four bay SFF drive backplane power cab...

Страница 136: ...S cable from two bay SFF drive backplane to controller port 2 Gold Two bay to four bay SFF drive backplane power cable Pink Four bay SFF drive backplane power cable M 2 SATA SSD cabling M 2 SATA SSD in slot 1 Cable color Description Orange SATA cable to x1 SATA port 1 Blue SATA cable to x1 SATA port 2 Cabling 136 ...

Страница 137: ...M 2 SATA SSD in slot 2 Cable color Description Orange SATA cable to x1 SATA port 1 Blue SATA cable to x1 SATA port 2 Energy pack cabling Cabling 137 ...

Страница 138: ...Controller backup power cabling Slot 1 Slot 2 Cabling 138 ...

Страница 139: ...figuration Cable color Description Orange SATA power Y cable to x1 SATA port 2 Blue Power extension cable SFF configuration Cable color Description Orange SATA power Y cable to x1 SATA port 2 Blue Power extension cable Cabling 139 ...

Страница 140: ...Fan cabling Cable color Description Orange Fan 1 cable Blue Fan 2 cable Gold Fan 3 cable Chassis Intrusion Detection cabling Cabling 140 ...

Страница 141: ...Serial port cabling Power supply cabling Non hot plug power supply cabling Cable color Description Orange 16 pin power supply sideband cable Blue 14 pin power supply cable Cabling 141 ...

Страница 142: ...Flexible Slot power supply cabling Cable color Description Orange 14 pin power supply cable Blue Redundant power supply sideband cable Cabling 142 ...

Страница 143: ...nge is 20 C hr 36 F hr The upper limit and rate of change may be limited by the type and number of options installed System performance during standard operating support may be reduced if operating above 30 C 86 F Extended ambient operating support For approved hardware configurations the supported system inlet range is extended to be 5 C to 10 C 41 F to 50 F and 35 C to 40 C 95 F to 104 F at sea ...

Страница 144: ... 500W Flex Slot Platinum Hot plug Low Halogen Power Supply HPE 800W Flex Slot 48VDC Hot plug Low Halogen Power Supply These are entry class power supply products for ProLiant Servers For detailed power supply specifications see the QuickSpecs on the Hewlett Packard Enterprise website ATX 290W Non hot plug Power Supply 92 efficiency Specification Value Input requirements Rated input voltage 100 VAC...

Страница 145: ... Hz Rated input current 5 5 A Rated input power 331 W at 115 VAC 319 W at 230 VAC Efficiency At 230 VAC 50 Hz No less than 91 at 100 load No less than 94 at 50 load No less than 90 at 20 load No less than 80 at 10 load At 115 VAC 60 Hz No less than 87 6 at 100 load No less than 89 7 at 50 load No less than 87 2 at 20 load No less than 80 8 at 10 load Power supply output Rated steady state power 29...

Страница 146: ...0 VAC 537 W at 240 VDC for China only BTUs per hour 1902 at 100 VAC 1840 at 200 VAC 1832 at 240 VDC for China only Power supply output Rated steady state power 500 W at 100 VAC to 127 VAC input 500 W at 100 VAC to 240 VAC input 500 W at 240 VDC input for China only Maximum peak power 500 W at 100 VAC to 127 VAC input 500 W at 100 VAC to 240 VAC input 500 W at 240 VDC input for China only HPE 800W ...

Страница 147: ...o permit the connection of the earthed conductor of the DC supply circuit to the earthing conductor at the equipment If this connection is made all of the following must be met This equipment must be connected directly to the DC supply system earthing electrode conductor or to a bonding jumper from an earthing terminal bar or bus to which the DC supply system earthing electrode conductor is connec...

Страница 148: ...ibility matrix https www hpe com storage spock Storage white papers and analyst reports https www hpe com storage whitepapers For additional general support websites see Support and other resources Product websites Product QuickSpecs https www hpe com servers dl20 gen10 HPE ProLiant DL20 Gen10 support page https www hpe com support dl20gen10 HPE ProLiant DL20 Gen10 user documents https www hpe com...

Страница 149: ... updates Some software products provide a mechanism for accessing software updates through the product interface Review your product documentation to identify the recommended software update method To download product updates Hewlett Packard Enterprise Support Center https www hpe com support hpesc Hewlett Packard Enterprise Support Center Software downloads https www hpe com support downloads My ...

Страница 150: ...trongly recommends that you register your device for remote support If your product includes additional remote support details use search to locate that information Remote support and Proactive Care information HPE Get Connected https www hpe com services getconnected HPE Proactive Care services https www hpe com services proactivecare HPE Datacenter Care services https www hpe com services datace...

Страница 151: ... can be found at https www hpe com info reach For Hewlett Packard Enterprise product environmental and safety information and compliance data including RoHS and REACH see https www hpe com info ecodata For Hewlett Packard Enterprise environmental information including company programs product recycling and energy efficiency see https www hpe com info environment Documentation feedback Hewlett Pack...

Страница 152: ...ization for Standardization LFF large form factor LRDIMM load reduced dual in line memory module NCSI network controller sideband interface PCIe Peripheral Component Interconnect Express POST Power On Self Test QR code quick response code RBSU ROM Based Setup Utility RDIMM registered dual in line memory module REACH Registration Evaluation Authorization Restriction of Chemicals European Union chem...

Страница 153: ...SI SATA serial ATA SFF small form factor SPP Service Pack for ProLiant SSD solid state device TPM Trusted Platform Module UDIMM unregistered dual in line memory module UEFI Unified Extensible Firmware Interface UID unit identification Acronyms and abbreviations 153 ...

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