Kategorie-Archiv: Blabla

Cisco UCS – Erste Eindrücke

Fazit Nr. 1

Die M71KR-E Mezzanine Card muss zeititg getauscht werden.  Diese PCIe Add-On Karte wird kaum noch supported und unterstützt darüber hinaus nicht nennenswert die Vorteile eines Cisco UCS Systems. VMware ESXi 4.1 ist zum Beispiel das letzte VMware ESXi Release das diese Karte im vollen Umfang ausreizt. Ein SAN-Boot war darüber hinaus leider erfolglos!

Fazit Nr. 2

Policies, Policies, Policies ! Alles im UCS Manager dreht sich um Policies. Bis es  aber überhaupt einmal soweit war, durfte ich mich mit reichlich Firmware Updates herumschlagen. Sind die Abweichungen zu groß, ist das System umbrauchbar ! Danach ist man dann aber erstmal mit allerhand Policies beschäftigt. Darunter UUID-, MAC-Adressen-, WWNN- und WWPN-Pools.

Fazit Nr. 3

Service Profiles ! Im Großen und Ganzen ein geniales Konzept. Die Komplexität ist dennoch nicht zu unterschätzen. Für einen ersten Wurf kann man sich durchaus so durcklicken, aber wenn man es genau nimmt, ist reichlich Vorarbeit erforderlich bis ein Service-Profil einen Blade Server zum Leben erweckt. Eine interessante Feststellung ist, das Cisco seine Blade Server mit einem speziellen Linux System bootet. Dieses Image setzt alle Einstellungen vom Server bevor man damit Spaß haben kann. Allerdings ist das nichts für ungeduldige Menschen. Der Server bootet dabei zwei mal durch und das kostet reichlich Zeit.

Fazit Nr. 4

Flexibilität kostet seinen Preis ! Im Vergleich zu anderen Produkten gestaltet sich das UCS äußerst kompliziert. Der Cisco UCS Manager ist zwar nicht unintuitiv, aber dennoch sehr verschachtelt und entsprechend überfrachtet mit Einstellungen und Optionen. Manchmal weiß man nicht so recht wo man hinklicken soll bzw. wo etwas zu konfigurieren ist.


Ich möchte an dieser Stelle noch keine voreiligen Beschlüße fassen. Aber im Moment hinterlässt das Cisco UCS gemischte Gefühle bei mir. Ich hoffe mit einer Cisco M81KR VIC tritt der ersehnte Aha-Effekt ein. Es ändert zwar nichts an der Komplexität des Systems, aber wie ich schon erwähnte, die Flexibilität erfordert seinen Preis. Ich bin immer noch davon überzeugt, dass das Cisco UCS ein hervorragenden Lab-System abgibt.

ucsm1 ucsm2 ucsm3 ucsm4 ucsm5 ucsm6

Welcome Cisco UCS – Teil 2

Es ist soweit ! ;)

Bilder sprechen mehr als Worte. Der erste Cisco UCS 6120XP Fabric Interconnect (FI) ist eingetroffen. Erste Feststellung, das UCS Management ist nicht ganz ohne! Zweite und sehr wichtige Erkenntnis: Im Gegensatz zu Cisco Switching Produkten gibt es definitiv KEINEN Weg um OEM / Third-Party Transceiver zum Laufen zu bringen. Der FI erwartet Cisco branded Ware! Bisschen bescheuert, weil in meinem Nexus 5010 Pärchen krieg ich so Dinger ohne weiteres zum Fliegen. Sobald das SFP+ Transceiver Problem vollständig gelöst ist, gibt’s erste Erkenntnisse. DIe Flexibilität erfordert jedenfalls seinen Preis! HP Virtual Connect ist dagegen Kinderfasching,


Erste Veränderungen. Umbau auf Deutsch und neue Optik!

Wie ich bereits angekündigt habe, steige ich wieder auf die Sprache Deutsch um. Meine bisherigen Artikel bleiben natürlich weiterhin bestehen, da ich recht viele Treffer bei Google habe.

Um meinen Umstieg auch optisch sichtbar zu machen, habe ich das Theme gewechselt. Nichts besonderes, aber genug um die Veränderung der Seite hervorzuheben.

Dieser Artikel passt wirklich hervorragend in de Kategorie Blabla. :) Er ist absolut nicht lesenswert. *lach* Aber meine bestehenden Kategorien zu überdenken, dürfte ebenfalls nicht schaden.

In diesem Sinne, freut euch darauf was bald kommt. ;) Langweilige Versprechungen gibt’s bei mir jedenfalls nicht. *ggg*

New job, dead lab and a temporary solution. ;)

Hi !

Let’s start blogging again. :) A lots of time passed since I blogged interesting things. The main reason was, I decided to change my employer. The last weeks we moved our home, too. Now my little family is living in a suite little house, with a big garden, a big garage but no more big cellar. ;) But I will talk about this circumstance some lines later.


Today I had my first day at qSkills. This is my new employer. :) I’m working as an IT Architect and Software-Engineer. My first job is to design and implement an entire new network because the current network is very outdated. Maybe the new network is based on Cisco Nexus. ;) It’s hot stuff and my new boss loves nice and cool toys. Me too! ;) BTW. the company earns his money with professionel trainings and they have a strong relationship with Fujitsu and NetApp. In the dedicated training datacenter (nine 47U racks!) are lot’s of nice toys installed, predominantly Fujitsu servers and many NetApps storage systems of course. A very nice playground for lot’s of tests in addition to my private lab. :) A good point to talk about my home lab.

My well known home data center is DEAD ! I moved everyting into the new garage, until I can start my new home lab idea. ;) I’m not sure if I can pay the new idea this year, because the move to the new home was very expensive and I have a wife and little daughter who needs money too. But I can wait until next year. Meanwhile I’m running a tempory solution in the new cellar which is not big enough for a 2m tall rack. But it’s enough for playing and blogging about my experience, as you can see on the last picture. ;) That’s why I hope you visit my blog, again…. :D

Some news…

It’s end of February and I didn’t blogged since two months. :( But  the last months I had lot’s of work and prepared very important changes. I quit my current job and on 1. April 2012 I will start working in a new company. I will blog about my new employer soon. It’s an amazing company and I can’t wait starting my new job. :) Last weekend I signed my new tenancy agreement and my new home is amazing, too. But there’s no more room for my home lab. That’s why I have to stop for several months playing arround with my toys. Don’t worry, I have a great idea for my new “Home Datacenter”, but I need time and of course money. ;) Stay tuned and thank you for visiting my Blog. :)

Merry Xmas 2011

I wish all my readers and followers on Twitter a

Merry Xmas!

Thank you for reading and commenting all my blogs and tweets. :) Now it’s time to shutdown my home lab and spent attention to my family. :) My daughter Lina is one year old and 30 mins ago I give her a very big Teddy-Bear. :) That was really fun and she loves her new toy.

In 2012 I will finish my M$ Hyper-V project and I plan to publish a real world Hyper-V cluster configuration. I will start with the current Hyper-V version and I plan to do the same with Hyper-V 3.0 ! ;) A Windows SMB 2.2 file server over Infinband is on my roadmap, too. And with a little bit of luck I can get an HP EVA 4400 for my home lab. ;)

Stay tuned and I wish everybody  happy holidays! :)

Kind regards.

Merry Xmas 2011
Merry Xmas 2011

HP ProCurve Switch Mesh – My new lab network

I decided to try the HP ProCurve Switch Mesh technology in conjunction with my HP BladeSystems and HP Virtual Connect. After a week of planing, searching the Internet and reading several documents, I started to rebuild the network in my home lab. The results are amazing. Everything in my lab runs very fast and with low latency. Even the software based Core Router (Debian + Quagga) is no limitation. I tested the network performance with iperf and was able to send data thru my Mesh from one routed network to a another with 900 Mbits/s! I did the iperf test with two CentOS 6 virtual machine running one VMXNET3 NIC. The VMs are placed on different hosts, too.

Configuring the switch mesh is very simple. Disable routing and stacking and add all mesh ports with the mesh command. The vlans are added automatically to all mesh ports. Only ensure that every mesh switch knows all configured vlans.

My HP BladeSystem is connected with two LACP trunks to the switch mesh. I decided to setup VLAN tunneling  because the two connected blades running VMware ESX.The HP Virtual Connect setup was very simple and thanks to LLDP I detected a cabling error. ;) LLDP is very useful! You can see several informations about the connected network port. That’s really cool.

Currently my mesh is connected with several 1 Gbits links, but with a little bit luck I can get some 10 GbE modules for my 3500yl switches. ;)

That’s all for today. Stay tuned. ;)

[Offtopic] My new car: Audi S4

8 years ago I drove a very powerful car. It was an Opel Calibra 4×4 Turbo with a modified engine and I think about 260 horse power. This car was exciting and fun! But I have to give it away, because my budget at this time was too less to maintenance this car. But I never stopped to dream about a new exciting and fast car. Yesterday my 8 year old dream became true: Audi Quattro :D

Well it’s not the true, well-known and popular Audi Quattro, but it has four wheel drive, lot’s of power and it’s of course an Audi, too. :) Say Hello to my new baby! It’s an Audi S4 from 2003. It has a 4.2 liters V8 engine with 344 horse power. This car is so much fun and it revs up to 7000 rpm. That’s absolutely amazing and this car is an addiction! I love it. :) But it’s a very comfortable and usable car, too. It has space enough for our baby and all the stuff we need for a journey. A perfect combination: Fun and usability. :) And now enjoy the pictures of my “Black Beast”. :D

IBM BladeCenter E

Yesterday I received a new toy for my home lab: An IBM BladeCenter E

Two weeks ago I auctioned two IBM JS21 power blades for very little money, because a rack based IBM Power4 oder Power5 server is incredible expensive. Even an outdatet pSeries 615/630 with slow 1 GHz Power4 processor is not affordable. I don’t like to pay several hundreds Euros for a low performance server. That’s why I decided to catch the mentioned JS21 power blades. ;) Running these blades requires an IBM BladeCenter, of course and a member of my preferred Unix board offered me one with lot’s important accessoirs. Here it is, with two 2000 W power supplys, two Cisco Systems Intelligent Gigabit Ethernet Switch Module and two Brocade Fibre Channel Switch Modules. An IBM HS20 x86 blade is installed, too. Very nice, because the two JS21 blades aren’t yet shipped.

Compared to my HP c-Class BladeSystem the IBM BladeCenter is very outdated. Only four I/O modules – yes, I know, the BladeCenter H offers 8 I/O modules – and the design and packaging of the IBM blade server isn’t that nice and modern like my HP blade servers. But I know the IBM BladeCenter E is a very old system. It exists much longer than the newer HP c-Class BladeSystem and I’m only interessted in running a current release of AIX. ;) Combined with the nice I/O modules it’s a very good deal.