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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3
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1answer
32 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 ...
20
votes
1answer
587 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 ...
1
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0answers
16 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 ...
3
votes
1answer
81 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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votes
1answer
37 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, ...
0
votes
1answer
14 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 ...
0
votes
0answers
163 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 ...
2
votes
1answer
121 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 ...
2
votes
1answer
355 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 ...
2
votes
0answers
95 views

WWNs,WWPNs and Fibre Channel addresses

Lots of contradictory on these subjects and I don't know why. My first question is about the 64 bit WWN. One reference claims the terms WWN and WWPN are synonymous. An online source seems to refute ...
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votes
1answer
94 views

What is a Fibre Channel disk? [closed]

Our NetAPP SAN uses something called "Fibre Channel" disks. What are Fibre Channel disks, and does this mean that I can't replace them with a NetApp SATA or SAS disk?
0
votes
2answers
223 views

Can a NetApp disk array be used as a JBOD?

I have a bunch of (old) NetApp DS14MK2 disks arrays with Fibre Channel connections. I wouldn't use them to anything critical, but instead of throwing them out, could I use each of them as a separate ...
0
votes
1answer
259 views

Missing datastore in ESXi 5.5 after IP change on disk enclosure (N.B. FC connection)

I have the following setup. 1 HP DL380 G5 1 HP MSA2012fc drive enclosure with 2 FC controllers The 2 are directly connected via fiberchannel, 1 connection to the b controller of the MSA (no switch) ...
2
votes
1answer
103 views

Will ESXi 5.5 in standalone mode (free) support fibre channel SAN?

I have a HP blade in a C7000 enclosure and a new 3PAR StoreServ 7200 over Fibre Channel. Today we use DAS and have not virtualized our SQL servers. My goal is: SQL Server 2008 -> WS2012R2 -> ESXi 5.5 ...
0
votes
1answer
409 views

Dell PowerEdge R710 direct-attached to HP MSA 2040 SAN [closed]

I have no idea about Direct attached storage; I do not know that it is possible to do. I plan to use HP MSA 2040 storage to direct attached with my dell Power Edge R710 via Fiber Channel. What do i ...
3
votes
1answer
142 views

Are FC and SAS DAS devices standard enough?

Before I ask my questions, here is some background info that may or may not be useful: For the first time I find myself needing a DAS solution. My priority is data through-put in a single direction. ...
2
votes
2answers
1k views

VMware ESXi - Fiber Channel Configuration

I am trying to connect a promise vTrak e610f to a VM running on ESXi 5.5u1 through a Qlogic QLE8242 HBA. I want to use RDM to connect to connect it to a Ubuntu 12.04LTS VM. After installing the ...
0
votes
3answers
122 views

How to share a fibre channel filesystem between 2 hosts?

I have 2 hosts in isolated networks (no network access from one to another). There is a storage system accessible over fibre channel from both hosts. Is it possible to have both hosts have a safe ...
4
votes
1answer
200 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
2answers
80 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
333 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
3k 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 ...
0
votes
2answers
255 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
106 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
votes
2answers
216 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
225 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 ...
1
vote
2answers
294 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
108 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
296 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
votes
1answer
245 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
votes
1answer
866 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
844 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
742 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
121 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
196 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
655 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
300 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 ...
2
votes
2answers
818 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
76 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 ...
1
vote
1answer
89 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
3k 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
424 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
237 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
2k 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
4k 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
223 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
129 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
6k 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
137 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 ...