3
votes
1answer
65 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 ...
5
votes
2answers
173 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
121 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
74 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 ...
0
votes
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 ...
1
vote
2answers
134 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 ...
7
votes
2answers
261 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 ...
1
vote
1answer
181 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 ...
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 ...
2
votes
1answer
177 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
146 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 ...
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
232 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 ...
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 ...
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 ...
1
vote
1answer
178 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 ...
1
vote
1answer
173 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 ...
6
votes
2answers
364 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
votes
1answer
279 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 ...
1
vote
1answer
581 views

Interpreting count of zero transmit credits

Our SAN consists of some Brocade 5100 FC-switches, three storage systems and a number of servers. The none of the switches are inter-connected (no inter-switch links). All servers, switches and ...
10
votes
1answer
673 views

Correct placement of devices on a Fibre Channel fabric

We're getting a pair of new 8Gb switches for our fibre channel fabric. This is a Good Thing since we're running out of ports in our primary datacenter, and it'll allow us to have at least one 8Gb ISL ...
2
votes
5answers
3k views

Building cheap SAN

Note: Some of you may ask, why not just use a cheap hardware solution. The solution is not so cheap in the country it has to be installed in, with as much as 100% import tax on high end ...
0
votes
1answer
353 views

How do I resolve an “Invalid Transaction” error saving a zone config in Brocade Web Tools?

When trying to save zoning changes in the Zone Administration tool in Brocade Web Tools, I get the status "Failed to commit changes to fabric" and the messages window shows: --- start of commit ...
3
votes
3answers
2k views

Which OS can work as a fiber-channel target?

Just for the research, which OS can work from the box or with some 3rd-party software as a fc-target? I know only the following: Solaris (currently only OpenSolaris+COMSTAR), Windows Storage Server. ...
1
vote
2answers
323 views

Restart Fibre channel controller after blade bootup IBM HS bladecentre

I have a remote system that needs to resume on startup. If the system is simply powered on then the blades boot before the SAN is online and then the only thing you can do is restart the systems. Is ...
0
votes
2answers
293 views

SAN cache memory upgrade

We currently have an IBM DS4300 Dual Controller Fibre SAN. It is a good box, but getting pretty old. It came with 256MB of cache per controller. Recently we replaced the batteries in one of the ...
0
votes
2answers
1k views

2 Server FC SAN Configuration

I have 2 identical servers: -48GB Ram -8GigE NIC's -2FC NIC's -2x72GB RAID1 Hard Drives -Server 2008R2 Host I also Have a Fibre Channel SAN: -16x146GB RAID10 Hard Drives -2xDual-port FC Controllers ...
6
votes
1answer
1k views

fibre channel debian problem

I have a QLogic Fibre Channel card installed in a Debian box (Lenny), and after some tiffs with the firmware, I managed to get the operating system to recognize the card (DKMS driver, and the ...
2
votes
1answer
1k views

Best practices for adding 2nd FC switch to fabric on in-production environment?

I have a single Brocade Silkworm 200e switch in production right now. The corp exchange server and 3 ESX 3.5 hosts are connected to the clariion cx3 array through it. Port 0,1 are SPA0 and 1, and ...
4
votes
2answers
1k views

What is Multipath I/O?

What exactly does "Multipath I/O" mean?
1
vote
1answer
2k views

QLogic FC HBA + IBM DS5100 on RHEL 5.4 LUNs not detected as SCSI disks

Hey Guys! I've got a brand new DS5100 SAN connected to multiple hosts (HS22 Blade in BladeCenter H) via two independent fabrics. Switch (Brocade 20p for BladeCenter) is zoned properly, ie every host ...
1
vote
4answers
516 views

Direct Attach FC Drive to Server

Is it possible for a server/PC to attach directly to a single fibre channel arbitrated loop drive with a 40-pin interface? For example, we'd like to run benchmarks on a HP EVA 5000 fibre channel ...
0
votes
2answers
173 views

IBM 3534-1RU SAN HUB

I was given an IBM 3534-1RU SAN HUB and I realized that it isn't a fibre hub that would do TCP/IP! So what could I use this for?
3
votes
2answers
2k views

IBM XIV (Storage Array) - Anyone?

Is anyone here using the IBM XIV storage array? Anything you would like to share of your experience so far? We're evaluating an HP EVA along with the XIV which is very different (using commodity ...
8
votes
2answers
23k views

Fibre Channel LUN rescan and QLogic

I have a serious problem with a SAN storage array connected to a Linux box through Fibre Channel. Here is the configuration : Debian with plain vanilla linux 2.6.27.25 Fibre controller QLogic 4Gb ...
4
votes
1answer
559 views

Cisco FC SAN switch decision

I've got to buy a bunch of FC SAN switches in the next week or so, I have to, and want to, buy Cisco MDSs. Servers are HP BL490c G6's in C7000 chassis with Virtual-Connect Flex-10 ethernet ...
7
votes
16answers
5k views

Cheap but Highly Available Shared Storage? [closed]

my group is in the market for plentiful storage. We traditionally used big-iron FC-attached SANs, but they are way expensive and provide much more performance than we require. We want highly ...
1
vote
1answer
453 views

SAN Optimization: How do you go about it?

Lots of us have Storage Area Networks (SANs). Most of us, probably. How do you go about optimizing for speed? How many spindles do you have? iSCSI or FC? How do you break up your array? And if you ...
4
votes
7answers
1k views

Rough estimate for speed advantage of SAN-via-fibre to san-via-iSCSI when using VMware vSphere

We are in the process of setting up two virtualization servers (DELL R710, Dual Quadcore Xeon CPUs at 2.3 Ghz, 48 GB RAM) for VMware VSphere with storage on a SAN (DELL Powervault MD3000i, 10x 500 GB ...
0
votes
3answers
868 views

Does a command-line config tool exist for the Clariion CX

On SANs with Mylex RAID controllers there is a command-line utility called mlxcfg that allows one to configure the SAN. Does such a utility exist for Clariion CX SANs and is it free to use without ...