It is not easy to get information about Pool LUNs distribution by FAST VP tiers in EMC VNX.
In Unisphere (GUI) we need to click on properties of every single LUN.
In Naviseccli (CLI) we can get report for all LUN but it’s ugly as usual.
So, I have created a simple tool to get nice report about LUN distribution.
Optionally it reports LUN’s user size, consumed size and metadata size.
This tool was improved and integrated into the new tool Universal Storage Collector
One more tool I have created to work with storage systems EMC VNX, CLARiiON and Celerra.
VNXCollector is a tool for gathering information from EMC CLARiiON/Celerra/VNX and providing it to the Graphite.
In my previous article I have described how to make a visualization diagram from a NAR file.
We can do same thing from a ‘live’ array.
Here is a description.
In my previous post I talked about report tool for NAR files from EMC CLARiiON/VNX.
One thing generating by that tool is a configuration visualization diagram.
I separated this code from that complex tool and rewrite in on the Python to simplify its usage.
This post is not about Arduino, microcontrollers, Raspberry Pi, FreeBSD and so on.
But this post is about DIY – Do It Yourself.
I am systems engineer by my primary job. And most times I work with EMC storage systems. EMC provides a lot of tools for their products. But we need something different sometimes.
When I need something different I create what I need.
In this post I will tell about NarReport – my tool for analyzing performance data from EMC CLARiiON/VNX.
One new thing arriving in the FreeBSD 11 is a support for 1-Wire devices.
To check it I used Raspberry Pi Model B and DS18B20 temperature sensors.
Here is a description how to work with it. Continue reading
FreeBSD 10.2-RELEASE became available at 13 August 2015.
One of the added features is the bcm2835_cpufreq driver, which supports CPU frequency and voltage control on the Raspberry Pi.
Let’s check how it works.
The Raspberry Pi doesn’t have any ‘Real Time Clock’ (RTC) module, which keeps actual time.
To use external RTC module DS1307 on the Raspberry Pi with FreeBSD 10 I wrote a small program.
But FreeBSD 11 has a new driver for DS1307.
Here is instruction how to use it with FreeBSD 11 on the Raspberry Pi.
My previous web application for control GPIO was monolithic.
This mean that server-side and client-side was in one script.
But modern Web application going to be dynamic with Representational State Transfer (REST).
Here is a description of a simple REST API service for Raspberry Pi with FreeBSD.