Data Center

Cisco Data Center related stuff.

Configuring Hyperflex 2.5 Replication

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There are many cool HX 2.5 features and one of them is native replication. But how do you configure this ? Well. Let’s start. What is Hyperflex replication ? It is possible to replicate VM’s from one Hyperflex Cluster to another Hyperflex cluster. In case of a disaster, you can (manually) start the replicated VM’s … Read more

Configure vCenter Appliance to use NTP

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When I installed vCenter appliance in the lab, I didn’t use a NTP server. (I know… STOOPID !!!) So how can you configure it afterwards ? Login to the vCenter Appliance. timesync.get will give you what mode the appliance is in. ntp.server.add –servers <NTP Server> will add a NTP server timesync.set –mode NTP will set … Read more

Hyperflex Post Install

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When you’re done with the installation of Hyperflex, there are still some steps left. You can configure it manually, but you can also use an automated script. Just go to https://<installer ip>/mssh  when you have the CLI window just type : post_install Now you got some questions and after you answered them, the cluster is … Read more

Top Links to Hyperflex Posts

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As you know I wrote some blog about Cisco Hyperflex. To make a search easier, here are my links to the blog posts. Hyperflex Links : Really ? 37 Minutes to install Cisco Hyperflex ? Howto use Hyperflex Rest Explorer. (With Video) Expanding Hyperflex with a Compute Node is So easy ! Hyperflex Cluster Information … Read more

Start Relaxing and let HX Profiler and Sizer do the Trick !

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Do you have a hard time to discover your workload ? What are you running and what resources does it need from your VMWare environment. Stop counting manually ! Use Hyperflex Profiler and Sizer tool. Of course you can have a look at my HX Sizing tool or the official Cisco Hyper Sizer for Partners. … Read more

Expanding Hyperflex with a Compute Node is So easy !

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When you have a Cisco Hyperflex cluster and you have enough storage, but you need more CPU or memory, it’s possible to expand the cluster with a compute node only. In this instruction video I will show you the steps. [embedyt] https://www.youtube.com/watch?v=VoSeL_TsEZA[/embedyt] Summary : Assign the Compute-Only service profile to a server. Install the ESXi … Read more

VMWare Error : System logs are stored on non-persistent storage

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After installing ESXi on a SD-Card I received the error message : What is the solution for this issue ? First I got to see how the local datastore is called. This I am going to use to write the logging to. Goto Settings of the server. Click on advanced settings.   In Syslog.global.logDir you … Read more