Infrastructure at your Service
By Franck Pachot . J’essaie quelque chose de nouveau. Je publie beaucoup en anglais (blog, articles, présentations) mais cette fois quelque chose de 100% francophone. En sortant du confinement, on reprend les transports (train, voiture,…) et c’est l’occasion de se détendre en musique mais aussi de s’informer avec des podcasts. J’ai l’impression que c’est un format qui a de l’avenir: moins contraignant que regarder une video ou ou lire un article ou une newsletter. Alors…
By Franck Pachot . I’ll reference Alex DeBrie article “SQL, NoSQL, and Scale: How DynamoDB scales where relational databases don’t“, especially the paragraph about “Why relational databases don’t scale”. But I want to make clear that my post here is not against this article, but against a very common myth that even precedes NoSQL databases. Actually, I’m taking this article as reference because the author, in his website and book, has really good points about…
Introduction RDS provide automatic backup feature. This feature will backup the entire RDS instance. As a DBA sometimes you need to backup individual database, they are many reason for that (legal, migration, replication,…). Unfortunately individual database backups are not available within the RDS instance. This post explains how you can enable the native database backup on RDS , as you are used to with an on-premises SQL Server instance. To summarize we will create a…
SQL Azure Database by default offers a 99.99% availability SLA across all its service tiers. This means that for any database, the downtime should not exceed 52 minutes per year. Using Zone redundancy increases availability to 99.995% which is about 26 minutes per year. These impressive numbers can be achieved through in-region redundancy of the compute and storage resources and automatic failover within the region. Some disruptive events may impact the region’s availability like Datacenter…
In this blog post, I’ll go through the steps to create an Azure SQL Database using Azure PowerShell. Introduction to Azure SQL Database The SQL database services provided by Microsoft on the cloud are now grouped under the name of Azure SQL. The Azure SQL family contains services that I will briefly summarize; Azure SQL Database – DBaaS (Database-as-a-Service) Azure SQL Managed Instance – PaaS (Platform-as-a-Service) SQL Server on Azure VMs – IaaS (Infrastructure-as-a-Service) In…
The SQL Server environment I worked with today has dozens of SQL Server instances using AlwaysOn Availability Groups for High Availability. When a login is created on the Primary replica of an Availability Group it is not synchronized automatically on secondary replicas. This might cause some issues after a failover (Failed logins). Since this is not done automatically by SQL Server out of the box the DBA has to perform this task. To avoid doing…
What is Nagios ? “Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.” https://www.nagios.org/ In simple words, you can monitor your servers (linux, MSSSQL, etc …) and databases (Oracle, SQL Server, Postgres, MySQL, MariaDB, etc …) with nagios. We use the free version !!! 😀 VM configuration : OS : CentOS Linux 7 CPU : Intel(R) Xeon(R) CPU E5-2620 v4…
During my last blog post I explained how to installed a MABS. Now that your infrastructure is setup you will be able to protect the workload of your Hyper-V Virtual Machines. You have first to create a new protection group. This group will contain one or more VMs which will share the same backup configuration for retention, synchronization and recovery. Protection is managed as follow: DPM create a copy of the selected data on the…
During my last blog-posts I tested the MARS (Microsoft Azure Recovery Service) through Windows Admin Center and how to use Azure Backup to recover files/folders or System State for protected servers. To continue my Azure protection possibilities overview I will today installed a MABS on one of my virtual on-premise server and uses it to protect my others virtual on-premises servers. To do so you go to your Azure Recovery Services vault. A vault is…
By Franck Pachot . There are good reasons for NoSQL and semi-structured databases. And there are also many mistakes and myths. If people move from RDBMS to NoSQL because of wrong reasons, they will have a bad experience and this finally deserves NoSQL reputation. Those myths were settled by some database newbies who didn’t learn SQL and relational databases. And, rather than learning the basics of data modeling, and capabilities of SQL for data sets…
