Questions tagged [fibre-channel]

Fibre-channel is a communications protocol widely used in storage networks. It's most widely deployed in enterprise SAN environments, where large amounts of storage need to be shared amongst a number of different hosts, potentially over longer distances. The protocol is primarily used over fibre optic media (hence the name), but can also be used with copper interconnects.

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166 views

Can I dynamically expose an entire SCSI host over Fibre Channel, preferably in Linux

Is it possible to expose an entire SCSI host dynamically (an LSI HBA or RAID card) over Fibre Channel, if so how? Preferably on Linux (perhaps targetcli) and with disk hotplugging support. (i.e. ...
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How do I set up IP over FC on OpenSolaris / Illumos?

This article implies that it's easy, but gives no details. I have a double QLogic card in my OmniOS server, connected via two fibre-optic cables to SFP adaptors in my Procurve switch. What I would ...
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53 views

Configuring MPIO on Windows to remove duplicate disks

We have shared some storage from a EMC Unity SAN to Windows Server 2012 R2 to use with Veeam. In Disk Management, there are multiple disks listed with the same size. From previous systems, this is ...
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fibre channel backwards compatibility

I am wondering what fibre channel backwards compatibility looks like in detail. I have already gotten to know the '2x halving rule' which states that backwards compatibility goes in steps of halving ...
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how to discover the added group without rebooting in fc san?

Envs: Client A: Windows、 qlogic-qle2460、 SANsurfer FC HBA Manager Server B: Linux、qla2x00t、scstadmin A and B are connected to the same fabric switch. When I create a group for host A on host B, ...
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131 views

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 ...
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33 views

Mount the Vplex Virtual Volume ( LUN ) Xen Server

Hello ServerFault members, Please help me with this issue. I am in very strange situation with my Xenserver environment. I am trying to mount the Dell EmC ( Vplex LUN ) to the Xen server HA and when ...
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1answer
39 views

3par OS location

As a complete 3par Newbie I have a simple question about the OS of the Storage-System. Is the OS on a 3par stored on it's controllers or on Disks like in some EMC-Models. When I have an empty 3par-...
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How is FC HBA card compatibility on Ubuntu? [Solved]

I have a server running on Ubuntu 16.04, and need to connect this server to a SAN storage via FC. I wonder which kind of HBA FC card does Ubuntu support? For example, this card is suggested by a ...
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141 views

Fibre Channel Ports and Tape Library

I am looking for advice rather then fix my issue. What should fibre channel port settings be? Currently F_ports, I have a qlogic 5800 sanbox switch connected to quantum scalar i40 lto7 library over ...
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498 views

fsck.ext4 complaining that the device is in use. Can't find what exactly is using it

Our setup is a 3-node RHEL 7.3 bare-metal Kubernetes cluster running on Docker. We have a multipath FC SAN block device discovered on all three nodes. This device is used as a Kubernetes Persistent ...
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1answer
398 views

How to find if FC-Switch using port-zoning or not Brocade FC 300

I have to replace a HBA on RedHat5.3 due to card failure. A tech guy asked me that "Check your FC-Switch Zoning Type of Port Zoning or not? , because if host accessed by WWNN, you'll need to update ...
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Centos 7 - install and mount fc multipath disks

I tried to install multipathing on a Centos 7.5 host following some links like https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/dm_multipath/mpio_components https://www....
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How to setup nvmetcli for FC loopback mode?

I have a NVMe SSD, KC1000, from Kingston and a HBA, QLE2672 2-port 16Gb Fibre Channel Adapter, from QLogic and are installed on Linux kernel 4.16.6. Then I would like to set up a scenario which has a ...
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split lc connection to fit two SMF transcievers?

I got a cross connect in a data center patched into my patch panel, I'm using SC to LC cable (SC from patch panel to LC into transceiver) to connect it to my switch (Arista 7150s). I just bought ...
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How to reattach Fibre channel drive when server reboots

I have two servers connected via point-to-point Fibre Channel (QLogic cards). The file server is running FreeBSD and has the iSCSI Target The other is running Debian and is the Initiator. The target ...
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Cisco UCS compatibility with FC-AL storage array

We have a Xiotech RS-1602-FC-SBD storrage array that I am testing to see if it is of any use. We have a Cisco UCS Chassis with blade servers and a Fabric Interconnect 6120XP. The storage array ...
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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. ...
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126 views

Fiber channel HBA, backwards compatibility

I'm pretty new to using FC HBA's, but planning on expanding my server with a storrage array. I found a cheap older (but good enough for my use case) LSI Engenio 1932. It has dual 4Gbs FC connection. ...
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522 views

When multiple VMs share a storage device on the same host, where does the data actually travel?

I am trying to figure out the optimal way to share storage with multiple VMs on the same box. I am aware of a range of options: NFS, iSCSI, fibrechannel, bridged, etc, but I am unclear how they fit ...
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1answer
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How to differentiate GE, Optic and FC adapter/SFP?

I'm going through old switches laying around and find myself troubled by all the different connection types the PCI adapters and their SFP have. I found a 10GE (gigabit ethernet?) SFP that says it's ...
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Microsoft Hypervisor: Can we map LUNs directly to VM like VMWare RDM using HyperV's Virtual Fibre Channel Feature?

If we have a vSAN created on Microsoft Hypervisor and Virtual FC Ports have been assigned to VMs, can we directly map a LUN to the VMs bypassing the Hypervisor? i.e. The Hypervisor's disk management ...
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Hyper-V Point to Point using FC HBA

Is it possible to connect Point to Point two Hyper-V servers using FC HBA to replicate data without connection to external storage?
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Connecting two computers directly using Fiber

At my workplace, we have an electron microscope that is hooked to our storage server using a 10g FC connection. Due to unknown reasons, we are experiencing some issues with the connectivity. As plan ...
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2answers
656 views

Fibre channel zoning with VMware datastores

If I have multiple VMware ESXi servers controlled by vCenter that share a datastore over FibreChannel, what is the best practice for zoning those connections? I see two obvious ways to do this: ...
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585 views

Automatic backup of brocade switch FC configuration

What is the best way to set up automatic backup for switch FC configuration? I have searched the web and came across https://code.google.com/archive/p/save-simply-your-san/ , but it looks like it ...
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219 views

Blade Server Networking Connectivity Solution

We are looking at purchasing 4 of the Dell M1000e Blade Chassis', along with 16x Half Height Servers in each. For our LAN Connection, we are looking at 2x MXL 10/40 GbE IO's per Chassis. From my ...
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324 views

FC persistentvolume: What is the LUN number?

I'm trying to understand how to use fibre channel with OpenShift/Kubernetes persistent volumes. At https://docs.openshift.com/enterprise/3.1/install_config/persistent_storage/...
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1answer
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Unable to access server using remote desktop and detect access point in controller software at the same time

I have following topology: I am not a networking expert but somehow using the help of the Internet I was able to successful configure my topology so that I can access the Server remotely from any ...
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1k views

Fibre Channel Adapter as a NIC?

Is it possible to use a Fibre Channel PCIe adapter as an Ethernet network interface? I have QLogic Fibre Channel controller and a 3Com Gigabit Ethernet switch. I use Debian on a DL160 G5.
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Can I use a HBA to connect to Internet

I recently got a QLogic QLE2460 network card which seems to be a Host Bus Adapter. Can I somehow use it as a network interface (NIC) between my server/workstation and a Cisco Catalyst switch with ...
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895 views

FibreChannel-SAN SCSI-block-devices get lost

There are 3 LUNs on a FC-SAN I want to access using 2 HBAs (with two paths each. When the system is booted, everything seems fine, but after a while the sd*-devices from the second HBA disappeared ...
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3answers
108 views

ESXi FibreChannel Woes

I just recently got VMWare ESXi installed on one of our servers. I installed some fibre channel cards (QLogic) and for some unknown reason they show up in the storage adapters tab as an ISCSi Adapters....
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1answer
207 views

Can I use Emulex fibre channel ports to set up a network between my servers? [closed]

I recently got my hands on a couple of old Fujitsu servers, all of which contain two PCIe fibre channel cards (Emulex ones). I also own a fibre channel switch. Is it possible to use the FC ports as ...
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1answer
816 views

100BASE-FX WDM vs 100BASE-BX vs 100BASE-BX10 - Are they all the same?

Are these three all the same thing being inconsistently named by different manufacturers? 100BASE-FX WDM uses separate wavelengths (1310 nm & 1550 nm) for Tx & Rx over a single strand of ...
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1answer
383 views

Moving a QLogic fiberchannel card from one ESXi host to another

We are trying to upgrade an DL360 G6 ESXi host with a DL360p G8. The G6 has a Qlogic ISP2532 FC card inside and everything works fine. Since I don't have a spare FC card, I need to use the same card ...
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1answer
264 views

Fibre channel: LTO tape overwritten on bus reset

There is a situation that we had at out customer that I'd like to understand better. Here's what happened: A library with LTO tape drives is connected to a fibre channel environment Archiving ...
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2answers
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Can you connect a SAN directly to a HBA with Fibre Channel?

I am in the process of sourcing our company's first SAN as we have the need for high availability/shared storage. I have noticed fibre channel switches are extremely expensive, and for redundancy we ...
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1answer
2k views

VMware ESXi config pass-through for Fibre Channel

I want to config pass-through for FC in VMware ESXi 5.5 (FC HBA: ISP2532-based 8Gb Fibre Channel to PCI Express HBA) follow the link https://tinkertry.com/usb3passthru. But when I turn on the virtual ...
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Relationship between device queue_depth and HBA ql2xmaxqdepth

RHEL 6/7 server with dual-port FC hba: There's a queue which may be adjusted via the QLogic HBAs ql2xmaxqdepth kernel-module parameter. And there's a queue for each block device, eg /sys/block/sdf/...
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600 views

How can I distinguish between SAN zoning and LUN assignment issues on RHEL6?

From Red Hat Enterprise Linux 6 how can I tell the difference between a SAN zoning problem (e.g. cannot reach the storage at all) versus a LUN masking issue (e.g. LUNs not assigned to the right HBA ...
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1answer
458 views

Dell R730 with QLogic 2660 16Gb FC HBAs connected to a Brocade 300 8Gb FC Switch? Will it work?

We have a standard shop with 3x Hypervisors running VMware vSphere 6.0. The hypervisors are currently connected via 8Gb FC link to a Brocade 300 (8Gb FC) switch, which is then connected to our ...
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Removed cluster disk that wouldn't come online, now it wants to be formatted. Can I recover the data?

I inherited a failover cluster hosting several VMs and some storage volumes. It uses a fibre-channel SAN for storage. I updated firmware on the SAN controllers recently and when it came back up one of ...
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Centos 6.7 Emulex LPE12002 on Dell can see any targets/LUNS on HP EVA4400 SAN

As the title indicates -- I have a new Dell R730xd running Centos 6.7 with all updates loaded, etc. I also installed the Emulex utilities, etc. The issue is that nothing I try (reboot / rescan-scsi-...
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2answers
5k views

Centos 7 server can't see Disk Array disks

Context I have a server freshly provisionned with CentOS 7, connected to a Disk Array with a Fibre Channel connection. I want to mount the Disk Array's disks on my server's file system, and then ...
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Ubuntu 14.04 with Emulex fibre channel. Finds target, but doesn't create device

I have a Cisco branded Emulex LightPulse LPE12002 in a Cisco UCS server running Ubuntu 14.04, and I am trying to connect to about 15TB of remote storage configured for it. I don't know where to start, ...
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FC-Multipath: Which path_selector performs best?

So I learned that since Red Hat 6 it is possible to choose between 3 algorithms for loadbalancing between different paths to my FC-SAN, the default dumb round-robin - and new - queue-length and ...
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1answer
3k views

Checking fiber cables for light without risking my eyes

I do storage, so I do a lot of fiber. I am also unlucky enough to have a patch panel with single strands, so when someone else does patching for me, it's usually a mystery which of the two strands I'm ...
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405 views

NPIV Fibre Channel how to make vHBA scsi_hostX persistent after reboot and libvirt

I'm using QLogic 8GB Fibre Channel HBA which has NPIV with CentOS6.5 I created the LUN on the SAN and did the zoning for the virtual WWPN. In CentOS I do the following to create a virtual HBA: echo ...
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1answer
2k views

Can't Repair SR in XenCenter

I've added in a 4th host to my Xen 6.2 cluster and I'm unable to get it to successfully attach to my existing storage repositories. I'm using 3 older IBM hosts and the 4th new one which is CPU masked ...