Comments for IT 2.0

Comment on Will we need a C for Nicira? God forbid! by Massimo

Massimo — Fri, 10 Feb 2012 13:36:25 +0000

Pete, some of the docs are misleading. There are a few that only report vSphere, KVM, Xen (example: http://www.nicira.com/sites/default/files/docs/Nicira%20-%20Network%20Virtualization%20Platform%20Datasheet_0.pdf)
Yes it appears they also support Hyper-V. For that matter VMware also supports Novell Netware as an OS (which I didn’t mention) … (just kidding).

Comment on Will we need a C for Nicira? God forbid! by Ivan Pepelnjak

Ivan Pepelnjak — Fri, 10 Feb 2012 11:07:39 +0000

Sure there are – I’m running my Linux servers on VMware #ImTheFivePercent

Comment on Will we need a C for Nicira? God forbid! by Pete

Pete — Fri, 10 Feb 2012 10:19:35 +0000

Hi Massimo,

I think you forgot the elephant in the room in your diagram above.. Hyper-V Really, are there any other OS’s apart from Windows (probably 95%+) on VMware ?

Pete

Comment on Will we need a C for Nicira? God forbid! by Massimo

Massimo — Thu, 09 Feb 2012 14:57:03 +0000

Ivan, you have just used 7 times the word “open” (including ovsdb) in 3 lines. But more importantly – and even worse than that- you have used the word “academic”. Just saying

Thanks for chiming in and set the record straight.

Massimo.

Comment on Will we need a C for Nicira? God forbid! by Ivan Pepelnjak

Ivan Pepelnjak — Thu, 09 Feb 2012 14:40:36 +0000

I also said (when I managed to stop laughing that since Open vSwitch, ovsdb and OpenStack are all open-source, it’s a bit simpler (from purely academic perspective) to replace proprietary components with alternatives, which might not be the case in some other environments. There are people writing their own (open-source or commercial) OpenFlow controllers to manage Open vSwitch.

Other than that, you’ve just made my day. Thank you!

Comment on The ABC of Lock-In by Massimo

Massimo — Tue, 07 Feb 2012 22:51:32 +0000

This in an interesting way to look at the problem of heterogeneity. Thanks.

Comment on The ABC of Lock-In by Massimo

Massimo — Tue, 07 Feb 2012 22:49:11 +0000

I like that picture a lot. It does indeed show the difference between “Enterprise Architectures” and “Cloud Computing”.

Comment on The ABC of Lock-In by Michael

Michael — Tue, 07 Feb 2012 01:06:49 +0000

The picture of on page 3 of the presentation
http://imexresearch.com/reports/EXEC%20SUMMARIES/IMEX%20-%20VZ%20Exec%20Summary.pdf
I like this very much. “Choas in the Enterprise”

Comment on The ABC of Lock-In by Michael

Michael — Tue, 07 Feb 2012 00:39:46 +0000

I forgot to say, that through the combination of the layers, the multiplication of factorial layers, if any layer changes from n=1 to n=2 (simplest form of a multivendor strategy) the factorial of this layer changes (in this case from 1 to 2 by 100 percent) .

E.G look at the theory of sets.

Combined two elements (computer and network) in a single vendor strategy.
Set 1 Computervendor (HP) -> 1 elements -> n=1 -> n!=1×1=1!=1
Set 2 Networkvendor (Cisco) -> 1 elements -> n=1 -> n!=1×1=1!=1
Combination of set 1 x set 2 = 1! x 1! = 1 x 1 = 1 combinations

Combined two elements (computer and network) in a multi vendor strategy(two vendors).
Set 1 Computervendor (HP, DEll) -> 2 elements -> n=2 -> n!=1×2=2!=2
Set 2 Networkvendor (Cisco, Juniper) -> 2 elements -> n=2 -> n!=1×2=2!=2
Combination of set 1 x set 2 = 2! x 2! = 2 x 2 = 4 combinations

Combined two elements (computer and network) in a multi vendor strategy(three vendors).
Set 1 Computervendor (HP, DEll,IBM) -> 3 elements -> n=2 -> n!=1x2x3=3!=6
Set 2 Networkvendor (Cisco, Juniper,Arista) -> 3 elements -> n=2 -> n!=1x2x3=3!=6
Combination of set 1 x set 2 = 3! x 3! = 6 x 6 = 36 combinations

As you can see it increases exponential. Upps and that is in the same layer 5, not between the layer , for example layer 7 and 8.

Comment on The ABC of Lock-In by Michael

Michael — Tue, 07 Feb 2012 00:07:39 +0000

Massimo, if you look from a mathematical view at a datacenter, then if you do a multi vendor strategy this will change the factorial and then you have a exponential curve, more complexity.

Formular for factorial : http://en.wikipedia.org/wiki/Factorial

Layer 9: Userpart (Software dynamic) n!+1+1+1+1+1
Layer 8: Application (Software dynamic) n!+1+1+1+1+1
Layer 7: Guest OS (Software dynamic) n!+1+1+1+1+1
————————————
Layer 6: Hypervisor (Software dynamic, mobile element) n!+1+1+1+1
————————————
Layer 5: Server Network Storage (Hardware static element) n!
Layer 4: Rack space (Hardware Sstatic element) n!+1+1+1
Layer 3: emergency power Diesel (Hardware static element) n!+1+1
Layer 2: floor space (Hardware static element) n!+1
Layer 1: Building (Hardware static element) n!