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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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
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1answer
353 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 ...
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1answer
3k 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 ...
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1answer
8k 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 ...
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1answer
4k 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 ...
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0answers
334 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 ...
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1answer
176 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 ...
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1answer
8k 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 ...
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1answer
143 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 ...
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1answer
504 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
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1answer
968 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 ...
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1answer
2k 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? ...
5
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1answer
3k 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: ...
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2answers
6k views

Mounting LUN from EMC VNX5300 via FC on Centos 6

On my VMX5300, I have created LUNs, configured hosts etc. Mounting LUNs in my ESXi is very simple, ESXi host discovered new FC device and with a few clicks I was able to mount new FC storage. On ...
4
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1answer
586 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
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2answers
120 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 ...
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2answers
540 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
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1answer
3k 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 ...
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1answer
157 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 ...
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1answer
7k views

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

How do FC switches work, and how should I configure mine?
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1answer
2k 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
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3answers
576 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 ...
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2answers
451 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 ...
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2answers
473 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?
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0answers
68 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 ...
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1answer
763 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 ...
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1answer
243 views

I still don't understand FC HBAs and such things [closed]

There is NO documentation out there. The companies don't offer any help on their products, and there aren't text books or anything. I want to set up a storage link between my desktop and my file ...
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1answer
327 views

What is the maximum number of FC switches in a switched star-topology fabric with a 4-domain fabric license on the hub switch?

I have 2 blade chassis, with 2 built-in fibre-channel switches each. And I inherited a "budget" fibre-channel switch with a 4-domain fabric license. I need a reality check, please: When I connect ...
2
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2answers
5k views

Emulex FC HBA not resetting

A Solaris 11 machine with an oldish Emulex HBA seems to have some problems: # dmesg | egrep emlxs Dec 29 15:31:10 san2 emlxs: [ID 349649 kern.info] [ 5.0608]emlxs1: NOTICE: 730: Link reset. ...
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2answers
2k views

diagnose dell poweredge r210 II not booting with qlogic hba

Dell doesn't "officially" support QLogic HBAs in their cheaper servers like R210 or R310. They support it with R410 upwards. But "official support" is a dubious concept anyway, at least for real men ...
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2answers
116 views

What SFPs can be used with Dell MD36x0f storage?

I've not found any information about used SFPs and supported cable length (which is what I actually want to know). Online configuration wizard does not allow to choose SFP type, only quantity. One ...
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1answer
178 views

Fiber-optic communication: Link length [closed]

I am trying to understand fiber optic communication over long distances: Can optical fibre communication links be used for a length of 100km as well as 100000km without having to change sender and ...
0
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2answers
4k views

MultiPath configuration on RHEL5 and Clariion CX-300

I have problem with discovering my FC-connected CX-300 storage. Frankly speaking I'm complete novice in FibreChannel, so step by step explanation would be appreciated. My configuration consist of two ...
3
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3answers
739 views

Is it possible to multipath across FC and iSCSI?

Perhaps a silly question this one, but I was wondering if it were possible to multipath a storage array across a FC connection and an iSCSI connection? Given that the main point of multipathing seems ...
1
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0answers
1k views

“Disk volume is write-protected” error when formatting

I have an Infortrend EonStor A16F-G2430 RAID-6 connected to Windows Server 2008 R2 x64 machine via Fiber Channel QLogic 2Gb PCI-X adapter. I am able to initialize the 8.5TB storage as GPT, and able ...
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1answer
419 views

EMC-branded DS24-M2 McData: Where get and what firmware?

I (will) get a EMC Symmetrix DS24-M2 FC Switch which is a branded McData 4500. I'm unsure how/if it's possible to update the box to the latest firmware without an official service contract anymore. ...
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3answers
261 views

Can't set up FC HBA with DHCP

I've got IP over FC working, and have the HBA (QLogic QLA2340) connected to a router with a DHCP server on it. However, whenever I do a: ifconfig fcip0 dhcp start I get: ifconfig: fcip0 wait timed ...
2
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2answers
207 views

Reset/reuse linux device letters?

Is there a way to tell the OS that /dev/sdd is really gone when I disconnect it and that it can reuse that letter? I have RAIDs hooked up through fibre channel. I have it set up so that fstab will ...
5
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2answers
5k views

How do I set up IP over FC?

I have 2 systems, with a Broadcom BCM5701 and a LSI7202p, of which are connected with a LC->SC cable. The cards are properly detected in Linux, however I wish to set up IP over FC. I've read online ...
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votes
1answer
225 views

why are FC drives so cheap? or Using Fibre Channel drives as internal storage RAID array [closed]

While looking on Google Product search for drives for a new file server, I noticed that that almost all of the cheapest 300GB 10k drives are Fibre Channel drives: Google Products search result page. ...
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2answers
203 views

How to benchmark a fiber storage structure

We have an VMware structure, that uses a couple of physical hosts, a blade chassis and two SAN storages (a Fujitsu DX90 and a Fujitsu Fibrecat SX88). The two physical hosts have most of the LUNs on ...
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2answers
5k views

How to connect an HP StorageWorks 8000 EVA via Fibre to a Windows Server machine for direct storage?

I have two used HP EVA 8000 AD524B drive enclosures with 14 146gb drives in each. They have 2 Fibre controllers in each. I would like to connect these two units to an HP Proliant DL380 G4 server ...
6
votes
2answers
3k views

Is 10Gbps fiber (aqua or teal clad) backwards compatible with 4Gbps/8Gbps (normally orange clad fiber) FC equipment?

Just like the subject says. I've got a mess of FC hardware in a rack that I'd like to replace the cabling on. Looking at Monoprice I see that LC/LC cables are really close in price between 10Gb and ...
3
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1answer
916 views

ESX shut down VMs when some but not all storage paths failed

I've been on hold now for an hour waiting for VMware support and am betting serverfault can beat them to the answer! I am running ESX 4.0 and 4.1 on 6 HP blades, using FibreChannel LUN storage. We ...
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1answer
241 views

Help identifying and getting started with this Fibre Channel equipment

Some old(?) fiber channel equipment is being donated to my company and I need help identifying what exactly I have, and how to get it up and running if possible. I have two HP rack units, each with ...
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1answer
1k views

what is the latency for an 8K transfer of Fibre Channel? (NFS vs FC) [closed]

I've heard it said that a 512byte data transfer over fibre channel is 10us so would an 8k (16x the data) take 160us? or is much of that 10us one time transmit overhead? I'm interested in comparing ...
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1answer
552 views

XServe Raid with Ubuntu 10.04 problems

I have an Apple XServe RAID connected via fibre channel to a Dell Poweredge R610. This server is mainly for hosting subversion repositories, and storing disk images. In the past 6 months or so we ...
0
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1answer
1k views

SAN I/O is horrible

I've been testing a SAN with fibre channel disks and I get 500MBPS Writes 200MBPS sequential reads and about 5MBPS randon reads / 1000 IOps max. Any idea why reads are so much slower? It is a 3PAR SAN ...
6
votes
2answers
489 views

Fibre channel zoning by port: bad idea?

I have a single FC switch here that has a bunch of servers hanging off of it. Currently it is zoned (as per my previous question, Fibre Channel zoning best practices) by WWN, one zone for each pair ...
0
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1answer
335 views

Convert EMC AX150 to iSCSI?

I've to an EMC AX150 SAN, with two FC controllers in it. And no existing FC infrastructure. Since the controller cards seem to be modular (you can get 1 or 2 of them), is it possible to obtain iSCSI ...