Tag Archives: fibre channel

Initiator, Target, Both or None ??

Whenever you’ve encountered an output of a nameserver entry you may have come across the phenomenon that the fabric has no clue what the attached device is. For [..]

Brocade, Brocade Technical, Fibre Channel, Storage Networking, Troubleshooting , , ,

Why FDMI is compulsory (or should be!!)

FDMI stands for Fabric Device Management Interface and is such an enormously cool feature and unfortunately one of the least used. From an operational management perspective FDMI provides [..]

Brocade, Brocade Technical, Fibre Channel, Storage Networking , , ,

9 – Long Distance configurations

Storage networks have been used for disaster recovery and business continuity purposes for as long as fibre-channel existed. The moment arrays could communicate to other arrays over either...

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Config Guide ,

Fillwords IDLE vs ARBff (one last time)

I’ve written about fillwords a lot (see here, here, and here) but I didn’t show you much about the different symptoms an incorrect fillword setting may incur. As [..]

Config Guide, Fibre Channel, Storage Networking, Troubleshooting , , , , , , ,

Energy Efficient Fibre Channel and related cost savings

For years many storage environments have used both active-active and active-passive multipath (MPIO) access mechanisms to access storage arrays in a dispersed or linear method. On enterprise class [..]

Fibre Channel , , , , , ,

Time with and without NTP on FC switches

I’ve been writing about troubleshooting issues for a while now and one of the things that is very difficult and most time consuming is correlating events between host [..]

Brocade, Cisco, Config Guide, Fibre Channel, Storage Networking, Troubleshooting , , , , , ,

Brocade 65xx series and airflow

This is important!! Now, you would think that when you look at the weather channel and the person tells you there is a wind coming from the North [..]

Brocade , , , , , , , ,

FC Frame header, or is there more to it

The FC frame header has not changed since its inception back in the late 80-ies. This shows the absolute rock-solid backward compatibility towards previous generation platforms and vendors. [..]

Fibre Channel, Storage Networking , ,

128GFC Fibre-Channel is here

Well, almost… 32GFC is fixed and at the standard has been ratified and the physical specs are moulded in concrete. In addition to this there are functions that [..]

Fibre Channel, Storage Networking , , ,

CRC errors

In Fibre-Channel, and many other network protocols, the use of CRC (Cyclic Redudancy Check) is adopted to detect corruption of frames. Be aware of the word “frames”!! As [..]

Config Guide, Fibre Channel, Troubleshooting , , ,