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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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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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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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36 views

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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1answer
55 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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26 views

Spinning up disks in FC shelf

I own an Engenio 4600 FC shelf, which works apart from flaws regarding missing diagnostics pages quite well as a JBOD in combination with Linux and ZFS. The only problem I need to solve is if I ...
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0answers
96 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
70 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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1answer
848 views

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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0answers
99 views

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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1answer
15 views

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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1answer
58 views

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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1answer
64 views

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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1answer
89 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. ...
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1answer
75 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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0answers
410 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
557 views

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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2answers
712 views

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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2answers
182 views

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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1answer
435 views

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 ...
2
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2answers
510 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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0answers
363 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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0answers
200 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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1answer
219 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
34 views

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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1answer
741 views

Fibre Channel Adapter as a NIC?

Is it possible to use a Fibre Channel PCIe adapter as a network interface? I have Qlogic fc controller and 3com gigabit switch. I use Debian on a DL160 G5.
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1answer
586 views

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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0answers
748 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
98 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
159 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 ...
4
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1answer
721 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
333 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
213 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
4k views

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
1k 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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0answers
98 views

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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560 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
307 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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2answers
94 views

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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1answer
857 views

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
4k 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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0answers
1k views

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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2answers
871 views

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 ...
22
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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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0answers
377 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 ...
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1answer
127 views

Possible to cascade HP StorageWorks P4300 G2?

From my understanding HP StorageWorks P4300 G2 is intended to be multiplexed over 1Gb ethernet when used as a SAN, where half of them should be in a remote location. If all 4 are next to each other, ...
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1answer
23 views

Connection to MGMNT iterface on Cisco DSC 9124-K9 lost

From some reasons i've lost connection to mgmnt interface in DSC9124-K9 - I cannot ping, cannot see MAC in arp. Fabric interfaces are working well, without problems so I do not want to reset whole ...
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0answers
2k views

Virtualization-(Cluster) with KVM/libvirt on top of a FC SAN

I'd like to set up a 2-node HA-Cluster based on Ubuntu and KVM running about 30 VM's. Both nodes are connected to a HP MSA(5TB) via Fibre Channel. Multipathing's already working and the nodes are able ...
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1answer
1k views

Operational State Down on QLogic Switch

I have a QLogic SANbox 5800 Fibre Channel Switch with 20 SFP ports. Out of these 20, I can use only 16. The last 4 ports are showing Operational State Down. SANbox (admin) #> show port ...
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1answer
3k views

No LUNs visible on ESXi 5.5 using Brocade 825 connected to EMC VNX 5300

We've just bought a new Dell PowerEdge R620 to replace the oldest of our 3 hosts in our vSphere cluster. The existing hosts are connected to our EMC VNX 5300 SAN using gigabit ethernet which is a ...