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Questions tagged [pci-express]

PCI Express (Peripheral Component Interconnect Express)

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PCIe bifurcation on Supermicro X10SRL-F

The motherboard supports PCIe bifurcation, but unfortunately the manual does not explain how to enable it and the BIOS menu options are poorly labeled. (not asking, just posting here to share what I ...
Zauberfisch's user avatar
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is there a way to hot plug all functions of a pcie device instead of just function 0?

It is often that we have pcie devices for example GPUs. That has multiple functions. I can statically assign all the functions to a domain by editing the XML. However, I would like to be about detach/...
Wang's user avatar
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SSD Software-Raid-0 Ubuntu not as fast as expected

I have an MB ASRock B650 Phantom with two SSD 1TB Samsung 990 PRO m.2 PCIe 4 drives. I set them up in a software Raid-0 with lukscrypt on Ubuntu. The SSD should reach 7.450 MB/s reading, in my naivety ...
Marc Johnen's user avatar
1 vote
0 answers
116 views

How to view I/O bridge in linux?

My laptop lenovo legion r7000 2020 env (with amd r7 4800h cpu): $ uname -a Linux CzgArch 6.3.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 14 Jun 2023 20:10:31 +0000 x86_64 GNU/Linux Recently when I searched ...
An5Drama's user avatar
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1 answer
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What is purpose of backup-power-connectors on 826701-B21 (Riser Card)?

What is the purpose of the connectors marked with 2 on the HP DL380's Riser card? Is it something for backing up power shocks on the PCI controller connected to the port? and if it is, then where I ...
nix's user avatar
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1 answer
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Does exist SFF-8087 adapters to PCIe?

I've found a few adapters from SFF-8642/8639/8611 to PCI express. Is it possible to do the same with a SFF-8087? Either directly or adapting to an intermediate format and then to PCI express? I have a ...
Felipe Almeida's user avatar
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315 views

how can I list all static builtin drivers in kernel, such as pcieport and pciehp?

with lspci I can see things like: Slot: 00:02.0 Class: PCI bridge [0604] Vendor: Red Hat, Inc. [1b36] Device: QEMU PCIe Root port [000c] Driver: pcieport In dmesg I can see pcieport 0000:00:02.0: ...
Wang's user avatar
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40Gbit/s RAID10 - on a single raid adapter is it possible?

I need an ultrafast backups restore for my solution. I am going to use two hosts: operating server and backup server. Both servers will be connected directly via 40Gbe PCIe 4.0 8x ethernet adapters so ...
Mitchel's user avatar
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2 votes
1 answer
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Intel S2600JF server: Processor PCIe Link Speed menu in the BIOS is missing

i have a Intel 4 node server with S2600 JF motherboard per node (older, DDR3 RAM, E5-2600 v1 and v2). I want to insert a NVMe pcie card (with two drives) that requires bifurcation. Based on the ...
Laszlo Malina's user avatar
1 vote
1 answer
510 views

Unexpected shutdown of Server (BSOD) with message “WHEA_UNCORRECTABLE_ERROR”

When we checked the system event log we found that following warning has been logged repeatedly. Event 17 A corrected hardware error has occurred. Component: PCI Express Root Port Error Source: ...
IT Researcher143's user avatar
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1 answer
527 views

How to extend 1U / 2U servers with multiple 2 slot full height GPUs for sharing? [closed]

What are the possible options to extend a 1U / 2U server with a GPU? e.g. I am searching for a solution how to add a GTX 1650 into the server. The GPU is usually 2 slots width and therefore often not ...
cilap's user avatar
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Tesla K80 not showing up in HP DL580 G7

I have a HP Proliant DL580 G7 server with P65 BIOS update from 2015 (which I think is the latest BIOS). I installed the PCIe expansion board in it and installed 4 x Tesla K80 GPUs. Connected them to ...
McJagger's user avatar
3 votes
2 answers
3k views

Dell R630 supported PCIe to NVMe (m.2) adapter and drive?

I can't seem to find any information anywhere about supported PCIe to NVMe (m.2) adapter and a brand of drive that will also work. I am aware third party adapters and drives tend to work with various ...
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1 vote
1 answer
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How to check PCI type and version of free PCI slot in Linux shell

I know how to check how many PCI slots are not used yet on my server, by using dmidecode and looking for Available slots: # dmidecode [...] Handle 0x0014, DMI type 9, 13 bytes System Slot Information ...
Lucio Crusca's user avatar
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AMD Optane alternative

I want to have an Optane features with my Ryzen build: high TBW and high I/O. Disk space irrelevant (like MEMPEK1W064GA, 64GB would be enough for me). And it would be nice if I can utilize the full ...
tchspprt's user avatar
1 vote
1 answer
6k views

PCIe - Training error on device - Link degraded, macLinkWidth = x16, negotiatedLinkWidth = x8

i've placed a pcie raid adapter card with onboard ssd's (AORUS RAID ADAPTOR built in with 4 x PCIe 3.0 512GB NVMe SSD) in a new (2020) Dell (Optiplex 7080). the system boots fine most times, but it ...
vulgarbulgar's user avatar
2 votes
1 answer
920 views

How much PCI-E bandwidth can my SAS HDD array make use of?

Note: This question is real-world, but to analyse it, please note I've begun from a "theoretical" starting point of device and bus capability, which I acknowledge will not usually be at all ...
Stilez's user avatar
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1 vote
1 answer
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add M.2 NVMe enablement kit to HP DL360gen9

I have a HP DL360gen9 8sff Applications running on the machine are saturating the current disks, all Intel Enterprise SSD disks. I would like to add M.2 NVMe drives but I can't figure out which ...
Max Favilli's user avatar
3 votes
2 answers
1k views

Why do internal <> external SAS expanders require a PCIe slot?

I have seen examples of home-brew NAS units that use SAS expanders plugged into a host motherboard that has neither a CPU or memory, literally for the purpose of powering the card. If the card doesn't ...
J Collins's user avatar
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1 answer
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Will a NVMe<>PCIe gen3 x4 (physical x16) Adapter use x8 of PCIe gen2?

I've found a couple of x16 nvme adapters like those: https://www.amazon.de/dp/B07VV9DYTL/ref=sr_1_2_sspa https://www.amazon.de/dp/B07RWCGP1S/ref=sr_1_8 So as a follow up to my earlier question PCIe ...
Zauberfisch's user avatar
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PCIe gen3 x4 card in PCIe gen2 x8 slot - full performance possible?

To my understanding, a gen3 x4 slot is equal to a gen2 x8 slot in terms of speed. I assume that by default a gen3 card can not get full speed, because the gen3 card is only x4 physically, and ...
Zauberfisch's user avatar
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1 answer
120 views

OCZ Revodrive 350 srs interrupts

We built some servers running Windows Server 2016 out of some "spare" parts with the following specs: Supermicro X10DRH-iT Dual E5-2620 v3 256GB Registered ECC DDR4 RAM 1x Adaptec 71685 RAID ...
Lenniey's user avatar
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Servers with 24 NVMe drives - read throughput [duplicate]

We would like to buy some servers and we are looking into DELL server with 24 NVMe drives (like R740xd2 - 2 socket server) since we need very high read IOPS and throughput. We are however wondering ...
Marek Milkovič's user avatar
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1 answer
339 views

How to boot M2 Pci express Card HP Gen8 Dl360P

I recently purchased the HP GEN8 DL360P server. I wanted to install an operating system to use M2 with a pci express card on this server. However, the server does not start boot with the pci card. ...
Ferdi KUCUK's user avatar
4 votes
1 answer
5k views

Does Dell PowerEdge R720(xd) support PCIe Bifurcation?

I want to add a bunch of SSDs to my PowerEdge R720xd, and the highest-density way to do that seems to be a card like this Dell Ultra-Speed Drive Quad NVMe M.2 PCIe x16 Card. However, the specs on ...
Moshe Katz's user avatar
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Possible to use SAS-2 and SAS-3 HBA in the same system?

I'm wondering if it is possible to use a SAS-2 HBA in a "SAS-3" system. I have a Supermicro X11DPH-T and have attempted to install an LSI 9201-16e. From what I understood (which may be wrong), a ...
Liczyrzepa's user avatar
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1 answer
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Configure single LTO tape drive over Fiber Channel HBA

How do you set up a single tape storage drive over an FC HBA? As far as I can tell, these things are not "plug and play". The tape drive I bought is an lto-5 FC taken from a tape library. I have ...
teziroct's user avatar
2 votes
2 answers
2k views

Hardware RAID array using PCIe based storage? (M.2 / U.2 / full PCIe slot)

Is there currently a mechanism for constructing a hardware RAID array using storage devices that have a full-size PCIe slot, PCIe M.2, or PCIe U.2 bus interface, such as SSDs? It is extremely ...
Dale Mahalko's user avatar
1 vote
1 answer
2k views

PCI-E lane speed vs NIC throughput

I am curious about NIC troughput vs PCIE slot speed. I have found Mellanox MHQH19B-XTR which claims to be 40 Gbps PCI-E 2.0 x8 cards. However, this slot limit seems to be theoretical ~ 31 Gbps. So, ...
curious's user avatar
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2 answers
3k views

HP ProLiant DL380 G6 GPU installation

I have a Proliant DL380 G6 and I want to build a Graphics card into it. To be specific, it is a GTX 960 from Asus. The card When I now want to build it in, I am pretty shure I need a pcie slot riser, ...
Lukas's user avatar
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0 votes
1 answer
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Internal HDD keep being dropped

I own a server on which I run flexraid and since a couple of weeks, I get the issue that whenever the server is doing some heavy operations on the RAID, one or more harddrives get dropped. In order ...
Jaspack's user avatar
  • 129
-2 votes
1 answer
418 views

How Infiniband manages to have 100Gbit/s

How Infiniband manages to get a speed of 100Gbit/s. The PCIE x16 has maximum speed of 32Gbit/s. For example, NVidia DGX-1 station has 4 such ports. How is this possible?
Konstantin Solomatov's user avatar
2 votes
1 answer
173 views

HP DL180 G6 Storage Edition (14x LFF) - Help Adding NIC ports

I have a whole bunch of these (18+) currently running. The DL180 G6 has 2x NIC ports both of which we are using, and one 16x PCI-e slot on a riser, in our case, occupied by a RAID card (mostly P410s)....
DaBuddha's user avatar
2 votes
0 answers
845 views

Manually executing option roms (PCIe SATA storage card)

I have an older Dell server, a Poweredge 2900 II, and I would like to use it with large HDDs (> 8 TB). For this, an expansion card is needed, since the motherboard nor the PERC RAID controller can ...
mmx1337's user avatar
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5 votes
0 answers
843 views

How to get PCI Tx/Rx byte counters?

I know how to read statistics about the configured network interfaces, for example via cat /proc/net/dev. Is there a way to read similar byte counters of PCI or PCIe traffic? Apparently, according ...
perde's user avatar
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2 votes
0 answers
378 views

PCIe: Why pciehp gives contradictory log info

I am running fio jobs on my NVMe SSD and hotplug it then. The platform is hot-pluggable and the system is Centos 7.0.Several seconds after my plug-out, the system encounters a crash and gives these ...
Leo Erzhuo Chen's user avatar
2 votes
2 answers
5k views

PCIe 3.0 downgraded to 2.0 speed

I have a dual Xeon board with Intel C602 chipset and two E5-2670 CPUs. The board comes with five PCIe 3.0 x16 slots and a PCIe 3.0 x4 slot; all of which are directly connected to the CPUs. I added a ...
ypnos's user avatar
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0 votes
1 answer
2k views

PCI Express 2.0 x16 vs 3.0 x8

Will a PCI Express 2.0 x16 graphics card fit in a PCI Express 3.0 x8 slot, and if so, will it affect the performance? Theoretically I take it the two configurations should be equal with respect to ...
Jay's user avatar
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0 votes
0 answers
92 views

Using non-FUJITSU 10Gb Ethernet Cards in FUJITSU servers

We are currently trying to upgrade old servers to 10Gb connections. The servers in question are: PRIMERGY RX200 S6 PRIMERGY RX300 S5 Our FUJITSU partner told us that there were no cards available by ...
taalas's user avatar
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0 votes
3 answers
6k views

Dell Poweredge R620 PCIe Training error what to do?

After the startup, the server show the "PCIe Training error :Integrated RAID" And then "PCIe express error interrupt at F000:B891" My thought is that the controller raid is broken Any help?
ale rep's user avatar
0 votes
1 answer
81 views

Can a standard PCIe card fit on top of VLP (Very Low Profile) memory?

I am dealing with a motherboard https://b2b.gigabyte.com/Server-Motherboard/MZ31-AR0-rev-1x#ov where multiple memory slots are situated right in front of several PCIe slots and hence a full-length ...
Matt's user avatar
  • 332
6 votes
2 answers
6k views

PCIe SATA III RAID controller card Linux setup

I recently added a StarTech 4 port PCIe SATA card to a Linux server. The card is connected via SFF-8087 to a Norco 4224 backplane and 4 new hard drives that I'd like to configure into a new software ...
fanli's user avatar
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1 vote
0 answers
114 views

SFP Card compatibility

We are installing our first "professional" server configuration in the office. We will install a HP ProLiant DL120 Gen9 that will provide a hypervisor based on CentOS / KVM and should be connected to ...
rlw's user avatar
  • 11
0 votes
1 answer
1k views

Only one link comes up on dual PCIe 10-Gigabit card

Background A server running Ubuntu 16.04 Dell X520 (based on Intel's 82599) is connected via PCIe ixgbe driver was installed from here and comes up at boot Issue The card is recognized by the ...
orangesomethingorange's user avatar
0 votes
1 answer
207 views

Compatibility criteria between PCIe component and the motherboard

I have a Gigabyte (GA-B85-HD3 2.0) motherboard and an LSI SA9201-16e, however am not seeing the BIOS configuration menu for the card on boot. The motherboard only has one PCIe slot that can accept the ...
J Collins's user avatar
  • 221
3 votes
1 answer
4k views

HP Proliant DL380 G7 compatible with Kingston SKC1000H/960G PCIe SSD NVME?

Can anyone confirm if they've successfully installed and operated the Kingston SKC1000H/960G PCIe SSD NVME card in an HP ProLiant DL380 G7 Server? If so, is it just plug-and-play? Does the extra ...
Mac Anamourlis's user avatar
0 votes
1 answer
3k views

Change the NUMA node where a PCIe device is attached

Modern servers using multiple physical CPU sockets have NUMA. PCIe devices are attached to one specific NUMA node as the PCIe controller is embedded in the physical CPU chip. Is it possible to change ...
Mircea Vutcovici's user avatar
1 vote
1 answer
491 views

PCIex lanes on Supermicro X10SRH-CF

I am trying to set up 5 GPUs on X10SRH-CF to run Tensorflow, but cannot seem to get the board boot up with more than 3 cards plugged in. In some layout I get it to boot with 4 cards but OS (Ubuntu ...
Marin's user avatar
  • 193
4 votes
1 answer
166 views

PCIE root complex failover

PCIE switches from Avago and IDT have the capability of root complex failover. This sureley does not happen over an instant - there must be some time that elapses before the secondary root complex ...
user434147's user avatar
-1 votes
1 answer
481 views

HP PCIe 8GB FC Adapter not visible on Windows Server 2012R2 [closed]

Anyone who can assist me. I have a HP Proliant GL360, On Boot, the HP PCIe 8GB FC Adapter drivers are visible. Once logged on the server, when I go to Network Connections, I can't see the adapters. ...
Msemane's user avatar
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