Cisco Blogs


Cisco Blog > Data Center and Cloud

Fibre Channel Standards, Speeds and Feeds, and Generation “X”

March 27, 2013 at 7:24 pm PST

Okay, I have a confession to make.

I’ve been somewhat amused by Brocade’s recent “Gen 5″ Fibre Channel campaign. After all, the idea that “we’re going to simply call 16G Fibre Channel something other than 16G Fibre Channel and pretend that people will not figure out that it’s really just 16G Fibre Channel” is, well, amusing!

Read More »

Tags: , , , , , , , ,

What Is Cisco UNIFIED FABRIC? Why Should You Care?

Is your network ready to help you transform and be the strategic partner that you can be? Let’s face it… Today’s data centers are challenged with siloed resources and facilities… Limited scalability… Poor resource utilization… Growing complexity…Perhaps the biggest challenge is time.  When 80% of your resources are dedicated to “keeping the lights on” and managing all what you have, there is very little time left for innovation that benefits the business.

And the reality is that the role of IT has to change – from a cost center to a business strategic partner!  Why? Because there are increasing demands on IT to help your business differentiate in order to survive and grow in these rough economic conditions. And let’s not forget that the increasing cost pressures, technology changes, and the advent of game-changers like cloud are forcing IT executives to look at how to deliver IT differently. 

These growing demands put even more pressure on the shoulders of IT especially given the current state of your Data Centers. The data center network sits at the core of IT and is key to how IT can deliver services and provide value back to the business.

So what do you do?  The good news is that …

Read More »

Tags: , , , , , , , , , , , , , , , , , , , , , ,

FCOE. Can’t we all just get along?

March 6, 2012 at 12:51 am PST

I was sitting in a room with a client the other day and normally in these conference rooms with the mahogany tables and high back leather chairs*, you have Cisco on one side of the table, and the client on the other. However, this wasn’t the case, as the table was formica and the chairs were folding.  Also, in the room was two groups that had never spoken before except in rare cases, “The network is down!” or “Our hosts can’t see their storage!”  Yes my friends, it was the LAN and SAN folks in the room.  The topic of FCoE was in front of us and the question was around their soon to be deployed Nexus 5000 switching infrastructure.    The discussion between the two parties over who would manage the Nexus 5000 reminded me of a scene from Ghostbusters… Read More »

Tags: , , , , , ,

Cisco SANs: Where do you begin?

February 20, 2012 at 1:07 pm PST

I spent two weeks over at the Ask the Expert forums, and I came to the realization that often our customers are bombarded with facts, figures, speeds, feeds, features, buzzwords, comparisons and functionalities for which they’re not sure which ones they must have while others they can live without or are a convenience.  So I figured I’d toss out what I think are the top features for building an MDS Storage Area Network.   Some may be obvious and others you might shake your head or light up the torches.  They’re not in any particular order as your mileage varies from mine.  I’ll probably skip those that are obvious like “hot swap power supplies” and other oh so exciting abilities…

The first set I usually refer to as the holy trinity of features as they constitute the foundation of the connectivity… VSANs, Port-Channels and TE Ports.  They’ve been around literally forever on the platform and for good reason, they’ve been part of the hardware’s DNA since it’s inception.  Additionally, if you walk down the hall to the folks that manage your LAN, you’ll find out that they’re using pretty much the same concepts and features as you (VLANs, Port/Ether-Channels and Trunking or 802.1q).  So, if those guys are managing hundreds or thousands of switches and routers, there’s probably something worthwhile here.   It’s also a pretty good chance that they are using them for the very same reasons that you are:

  • VSANs: Isolation of fault domains.
  • Port-Channels: High Availability and load-balancing of InterSwitch Links (ISL)
  • TE_Ports: The ability to run multiple VSANs over the same ISL leveraging frames tagged with the VSAN ID and enforced in hardware.

Next on my list is NPV Mode aka N_Port Virtualization.  I grew up in the era of 16 port SAN switches and like rabbits, they multiplied, and so did their domains, and don’t get me started on the upgrades…  You had top of rack designs that involved dozens of small switches and this tsunami of small switches was slowed down by the emergence of the high density directors with hundreds of ports, first 128 then 256 now over 500.  Lots of small switches met their demise..

Read More »

Tags: , , , , ,