Backup Raspberry Pi

Why Raspberry Pi ?

About a year ago I received an Raspberry Pi model 2b to learn programming. It’s a small “computer” with a lot of interfaces. Not only network, usb and also GPIO etc.

But instead I used the Raspberry Pi to track my solar panels with MRTG and I created a script that disabled my Access Points when nobody was at home. (To save energy. Why have your AP up and running when nobody is using it ?)

My Raspberry Pi Mode 2b
My Raspberry Pi Mode 2b

Samba server.

Because there were 4 USB connections at the RP, I connected my smart meter and an external HDD. The setup of a Samba server is very easy. A good link is : Samba-Deploying

But….. the network connection on the model 2b is only 100/10 mbit.. This is slooooowwwww !!! So I bought an 1000 mbit USB ethernet cable for Euro 1.83. Of course I can’t get the full 1000 mbit, but at least its fast !

 

Backup your Raspberry Pi

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Virtualbox error : VT-X is not available

Virtualbox could not start image again.

For installation of a Cisco Hyperflex system I am using Virtualbox on my laptop for the image. This is working perferct!

During a devnet session I had to install Docker on my laptop and I could create a Sparkbot. Really cool by the way. Then I wanted to install Hyperflex via my laptop, but I received some really strange errors.

VT-X is not available (VERR_VMX_NO_VMX

Virtualbox error
Virtualbox error

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Top 5 reasons Why Cisco UCS with NVMe.

Is the NVMe market growing ? According to IDC the NVME market is growing very fast in the next 3 years. SATA and SAS drives (Spinning disk and SSD) will be substantially less in the future. Why is it growing ? All hardware devices for storage relied on SCSI commands. These commands are processed sequential. … Read more

Cisco UCS Director 6.0 with Hyperflex integration (Video)

Automate Hyperflex with UCS Director 6.0 ! The software is available on the Cisco web site : www.cisco.com/go/software In a short video I will show you a working setup with a HX Cluster and UCS Director 6.0. Not only can you monitor the Hyperflex Cluster, but also configure and automate it with workflows.   Cisco … Read more

Really ? 37 minutes to install Cisco Hyperflex ?

Configuring the FI / UCS Manager

This week I went to a customer to install Hyperflex HX240 cluster with 4 nodes. Everything was already racked and stacked.

Hyperflex FI configuration
Hyperflex FI configuration

The first step is to configure the FI’s with ip addresses and a password. Just connect a console cable to the FI and your laptop. It’s easier to setup the FI-A and when the setup is finished then power on the FI-B. The procedure to setup a FI-B  is already described at : http://dcccie.joostvandermade.com/?p=25 

 

 

 

 

You should have the correct Firmware for the FI’s. Via the CLI or GUI you can upgrade the FI to the correct firmware. I prefer GUI although via CLI is also very easy. You can find the Dependencies int the Release Notes of Hyperflex

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Internet is getting faster. Now the bottleneck is Storage !

Well. Right now I don’t have any problem that my storage can’t keep up with my internetconnection.

And that has to do with my very slow internetconnection :
SlowInternet

Hopefully I will get fiber-to-the-home somewhere this year. And when I got 300 Mb, will I be able to download at that speed ?

Of course I can test it with  speedtest.net, but then all data remains in memory. Nothing is written to storage. (Doesn’t matter if it’s HDD or SDD.) So how to change this is you don’t want to invest in different hardware.

Think smart ! What is the fastest storage we got for ages….. It’s memory! I used RAM Drives since DOS 4.0 or something.

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Solution : Can’t add an EMC VNX 5500 to UCS Director 5.4

With UCS Director you can easily automate your Data center.

Not only the Cisco devices, but also third party devices like the EMC VNX 5500. But when I tried to add the VNX to the UCS-D system, I received an error and had a problem… Howto fix this. Gladly there is some good documentation after a good search. 😉

Here’s a video I created with the solution.

Howto Add an EMC VNX 5500 to UCS Director 5.4

 

If you don’t like watching a 5 minute video, here is an old fashion blog. 😉

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