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 ...

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72 views

Can someone explain the important differences between fabric, point to point, and loop on a fibre san?

I have a fully redundant HP 8/20q FC SAN that has been working well, but as I dig deeper into things looking for more performance, I'm quickly at the end of my knowledge when it comes to FC ...
3
votes
1answer
51 views

Is a DCB switch required for a FCoE setup?

I'm looking to play around with a test Fibre Channel over Ethernet (FCoE) deployment between 2 Xen servers and 1 storage server. Eventually I plan to replace our ageing NFS shared storage solution. ...
5
votes
3answers
178 views

Brocade mirror ports

I'm getting a bunch of brand new condor 3 based switches and these things have a feature I'd like to use called port mirroring. Essentially, a mirror port can be configured to show all traffic being ...
2
votes
2answers
126 views

How to check the current queue depth value?

I have an OEL server connected via fibre to a NetApp SAN. How can I view the queue depth as the OS sees it? Output from lspci: 05:00.0 Fibre Channel: QLogic Corp. ISP2532-based 8Gb Fibre Channel ...
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2answers
76 views

qle2462 target mode on redhat 6

i have a solaris server with 40tb of data on it that i need to get moved to another linux server. i bought 2 qlogic fiber cards both are qle2462 and put one in the solaris box and the other in the ...
4
votes
1answer
57 views

UCS FC Adapter Aborts

So here's the scenario, and I'm hoping @Chopper3 can chime in here. For our SAN fabric, we have a pair of Cisco MDS 9513 FC switches with three EMC frames and four Cisco UCS domains directly attached. ...
0
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2answers
68 views

Mount NTFS volume on two different servers

We mounted an NTFS volume on two Windows 2008R2 servers. This volume is on a MD Dell storage array, connected to servers with Fiber Chanel. It worked a while, but now we get some errors like ...
2
votes
2answers
128 views

ip over fiber channel for faster LAN

Is it possible to set up a fast LAN using HBA's and a fibre switch? I have a brocade 200e and several emulex LP1150 pcie 4GB cards. Information regarding IP over fiber channel is difficult to find. I ...
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2answers
135 views

SAN newbie: What kind of fiber cables do I need to connect to the front end ports on my EMC CX300

I have an old CX300 I'm messing with and I cant determine what kind of HBA\fiber cables I need to connect a server to the front end ports on the DPE2. The hardware reference doesn't give me any ...
2
votes
4answers
97 views

SAN newbie: Using a server like an ISCSI gateway for a purely FC SAN device

I am very new to SANs and have inherited an old EMC CX300 to play with. The CX300 is purely FC, but I'd like to experiment with ISCSI as well without having to purchase an expensive ISCSI gateway ...
4
votes
1answer
235 views

Is IP over FC still crazy complex? [closed]

In the link below, it is explained that 4 years ago IP over FC was crazy complex: How do I set up IP over FC? Is that still the case on CentOS 6?
0
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1answer
100 views

LUN storage disk in 2 servers, can't see the files

I have one LUN disk connected over FC with linux server ( with centos) and esxi server with VM in Centos. (Two machines work in different LAN's.) In both machines i see this disk. In VM i created the ...
53
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1answer
638 views

Fibre channel long distance woes

I need a fresh pair of eyes. We're using a 15km fibre optic line across which fibrechannel and 10GbE is multiplexed (passive optical CWDM). For FC we have long distance lasers suitable up to 40km ...
7
votes
2answers
265 views

How Fibre Channel Frames are populated and traverse a Fabric?

Trying to wrap my head around how Fibre Channel Frames are actually populated and sent through a switched fabric. I Understand WWNN WWPN, WWNN is a WWN of the actual HBA, and WWPN are the WWN of the ...
0
votes
1answer
246 views

Fibre Channel Link Aggregation

quick question. Is there a Port-Channel/EtherChannel Link Aggregation equivalent for Fibre Channel? Is it possible to aggregate FC Links for High Availability? For instance if I have two Fabrics and I ...
1
vote
1answer
78 views

Demystifying HP VC-FC 4Gb Module on c7000 Chassis

has anyone used the HP VC-FC 4Gb Modules before in a c7000? If so could you help me understand the "Connect To" column? It shows a WWPN, but when looking at our FC switch it is connected to I don't ...
3
votes
2answers
152 views

What is a proper procedure for unplugging fiber chanel from ESXi

In my DC admins have to unplug my FC connection from ESXi5 (from EMC VNX) (temporary, some maintance works). I have never done that before and have some doubt about my own procedure... My first ...
7
votes
1answer
296 views

VMWare ESX and guest settings for Netapp cluster failover

If I'm running VMWare 5.x on FC [edit] LUNs presented from a Netapp running ontap 8.x in 7 mode, what steps should I take to ensure that the VMs can withstand a worst possible case cluster node ...
1
vote
1answer
182 views

Multi Port Fibre Channel Target with qlogic qle2462 to increase speed

I have a server running Nexenta with a QLogic QLE2460 in target mode. This works great. My problem is that with that I only get 1 port worth of speed (4gbps) to my switch. How can I increase the ...
0
votes
0answers
54 views

How to show current throughput of Emulex FibreChannel card?

I have a DELL M620 Blade Server in a M1000e Chassis, with an Emulex LPe1205-M FibreChannel Card. A DELL TL4000 Tape Library is directly attached to this card. Emulex OneCommand Manager is installed ...
2
votes
2answers
370 views

How do you remove attached FC LUNS from CentOS 6?

We have a Qlogic QLE2560 HBA running on a Centos 6 server. I am needing to remove the attached LUNS remotely. I do not have any software from qlogic installed on the device. Their are 2 LUNS ...
3
votes
1answer
67 views

Is it possible to connect a FC HBA 8 Gb through 10 Gb Ethernet SFP+?

I have to connect an IBM Server with a QLogic EP2532 to an IBM DS3512 with a PMC PM8032. I need two 8 Gb FC LX 1310 nm SFP+ modules and since they seem to be hard to get, I thought would it be ...
0
votes
1answer
64 views

Solaris not seeing FC volume

We recently replaced a failed controller in an AL connected RAID. I wasn't the one that replaced the controller, but apparently when the new controller was installed something weird happened with the ...
1
vote
2answers
1k views

How to share Fibre Channel between servers on Windows 2012 STD

I'm new to Fibre Channel so please take that into consideration. We have 3 servers. 2 servers are running Hyper-V and 3rd server was bought to act as a file/backup server for those 2 servers. All ...
0
votes
1answer
259 views

hotplugging drives from a fibre-channel cabin reports wrong size

First thing, we are not even sure this is a udev problem, but we need somewhere to start asking... We have a Hitachi fibre-channel SAN serving volumes to a couple of machines running ubuntu server ...
2
votes
1answer
178 views

How to configure multipath using Intel X520-SR2 10GB on Oracle Linux 6.2?

I've installed the Intel x520-sr2 Ethernet/Fibre card into a server that has Oracle Linux 6.2 Installed on it. When I boot the server I can go into a QLogic menu (screen has something for Intel on ...
0
votes
2answers
1k views

What does this mean: “SATP VMW_SATP_LOCAL does not support device configuration”?

Can anyone tell me what this means in ESXi 5.1?: SATP VMW_SATP_LOCAL does not support device configuration I've googled it and I get a lot of results, but as yet all the pages that contain the ...
2
votes
1answer
2k views

Linux Fiber Channel Host Setup Basic

I've been googling for about 4 hours now with no luck. I am trying to setup a Linux server running Oracle Server 6.3 as a Fiber Channel host. And then connect it to a Dell Compellent Fibre Channel ...
1
vote
1answer
2k views

How to get multipath working for Ubuntu Server 12.04

I'm working on a project which aims to make use of Ubuntu servers running on enterprise class hardware. In our case that means IBM HS23E blade servers, QLogic 4GB fibre channel extension cards and ...
1
vote
0answers
147 views

Virtual fiber channel HBA in Solaris

We are trying to set up some virtual Fibre Channel HBA's in Solaris. This seems to be possible with NPIV. Creating NPIV's in a Solaris global zone works fine, but passing that NPIV to a zone didn't ...
-1
votes
1answer
109 views

Which protocol do clients use when communicating with servers in a SAN [closed]

I'm trying to wrap my head around how a SAN works and how it is implemented. If I understand this well, clients wanting to access the storage devices in a SAN need to communicate with the servers via ...
-2
votes
1answer
4k views

RHEL - blocked FC remote port time out: saving binding

My Server went into a faulty state since the database could not write on the partition. I found out that the partition went into Read Only mode. Finally to fix it, I had to do a hard reboot. Linux ...
1
vote
1answer
130 views

Looking for OpenFlow capable Converged Switch [closed]

I'm looking for a switch with the following features: has GBit and 10GBit ethernet interfaces has FibreChannel Uplink ports (4 & 8 Gbit) can use OpenFlow to regulate network traffic. Does ...
0
votes
1answer
146 views

Diagnosing SAN connectivity issues (RHEL5)

We are currently utilizing GFS2 to share a SAN LUN between 3 servers. However due to a feature problem with vendor software we are using, we currently have the volume unmounted on two of the boxes, ...
6
votes
1answer
360 views

FCoE, on any Ethernet switch?

I understand the concept of FCoE. I have looked at the Wikipedia page and looking at the layer 2 frame diagram, it looks like FCoE really should "just work" on any Ethernet switch, but is this really ...
-3
votes
1answer
681 views

Add Windows Server 2008 MPIO futures to Windows 7 [closed]

I have interest issue. I want to work with SAN storage via two Fibre Chanel with using multypath. And I want to use Windows 7 as workstation. Can i add this futures to Windows 7. And how to do this? ...
4
votes
1answer
2k views

Switch Netapp expansion FC port from target to initiator

I have a v3200 with a 4 port FC expansion card. I am trying to switch one (or all, doesn't matter) of those ports from target to initiator. When I execute fcadmin config, I get: ...
0
votes
2answers
3k views

Mounting LUN from EMC VNX5300 via FC on Centos 6

On my VMX5300, I have created LUNs, configure hosts etc. Mounting LUNs in my ESXi is very simple, ESXi host discovered new FC device and with few clicks I was able to mount new FC storage. On Centos ...
4
votes
1answer
233 views

Brocade ISL port monitoring

I have a pair of Brocade switches with ISLs running between them. I'd like to know if it's possible to be alerted when one of the ISL ports goes from an E_PORT to anything else (particularly a ...
1
vote
2answers
101 views

FC SAN network high-error rate simulation

Is there a way to simulate a malfunctioning device or a faulty cable in a FC SAN network? edit: I know shutting down a port on a switch is an option, I'd like to simulate high error rates though. In ...
0
votes
2answers
267 views

How to block some disks from probes on Linux boot?

My linux host connected to SAN with FC interface. It connect with one path, and see some luns, that can't access, because they need anohter path, not available to host. On boot linux probe all lun ...
3
votes
1answer
706 views

Fiber Channel Loop vs Point to Point

So, I'm playing with a couple of QLogic QLA2340s connected directly together. I've got options here to either have them act as a loop, or in point to point mode. What's the difference if I'm only ...
-7
votes
1answer
116 views

What's Fibre Channel? [closed]

i don't understand if the technology 'fibre channel' is something 'software' or something 'hardware' (fibre optics connection) ? Can i create a fibre-channel san using 'some' pieces of existent ...
24
votes
1answer
3k views

How should I set up my Fibre Channel (FC) network?

How do FC switches work, and how should I configure mine?
6
votes
1answer
1k views

Which events specifically cause Windows 2008 to mark a SAN volume offline?

I am searching for specific criteria/events that will cause Windows 2008 to mark a SAN volume as offline in disk management, even though it is connected to that SAN volume via FC or iSCSI. Microsoft ...
2
votes
3answers
288 views

HBA directly to DAE bypassing SPE

Is it possible to setup a server with a host-based adapter (HBA) directly to a Dell/EMC CX3-40f disk-array enclosure (DAE) which only has fiber connections, taking the storage-processor out of the ...
1
vote
1answer
246 views

Can tgtadm serve up FC targets on Emulex / Qlogic HBAs?

I'm trying to discern if 'tgtadm' can be used with mode 'fc'. All the documentation out there tends to point to iSCSI only, though some spots hint at Qlogic FC HBA target mode integration. Would ...
0
votes
2answers
186 views

CISCO SNMP map port identifier to physical port

Given the identifier (the id from fcsPortPhyPortNum) and/or WWN of a FC switch port, how can I determine the physical location of the port on the switch (i.e., module 2/port 5 or fc2/5) via SNMP?
1
vote
0answers
59 views

CISCO SNMP fcIfFLoginTable oid result

Looking at an SNMP walk over 1.3.6.1.4.1.9.9.289.1.1.5.1.3 (enterprise.cisco.ciscoMgmt.ciscoFcFeMIB.ciscoFcFeObjects.cffFcFeConfig.fcIfFLoginTable.fcIfFLoginEntry.fcIfNxPortNodeName) on a CISCO FC ...
0
votes
1answer
445 views

Can a backup server HBA be zoned into 2 tape drives without confusing applications?

| tape drive 1 | ---- | switch 1 | ---- hba1 | backup server | hba2 ---- | switch 2 | -----| tape drive 2 | Our backup server has 2 FC HBAs. Each is zoned into a different drive on the back of the ...