For years, I’ve recommended data and log files reside on separate drives for performance reasons. But given today’s flash arrays, virtualization, and much of the storage subsystem being abstracted, is separating data and log files still important? Short answer: yes, it should be, but don’t stop there. Long answer: it depends. You should review multiple…
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As a DBA, one of the most critical aspects of managing SQL Server is ensuring the integrity and reliability of database backups. SQL Server’s native backup functionalities offer robust tools for securing your data, particularly for databases utilizing the full recovery model. However, mixing SQL Server native backups with disk or VM snapshots can lead…
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“I thought the cloud was supposed to be fast. Why are things moving like a sloth?” Have you heard someone complain about the speed of an application after moving it to the Microsoft Azure? Azure is a good environment, but things are not always fast in the cloud. To illustrate, in this post, we’ll review…
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If you’ve moved your SQL Server workload to Azure Virtual Machines, you’ve noticed there’s no shortage in the number of options available. Virtual machine sizes, disk types, caching vs no caching, support for bursting, etc. When hosting SQL Server on Azure Virtual Machines, choosing the right combination of VM size and disk types is essential…
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No one likes to think about how to detect database corruption. But, Imagine this: you’re arriving at your job expecting an ordinary day. You begin receiving calls that the main application is returning a weird error when submitting or updating data; A severe error occurred on the current command. The results, if any, should be…
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We’re often asked to provide support during a crisis. Maybe a critical database is corrupt and no longer accessible. Or worse, an entire SQL Server instance is lost. Fortunately, many companies have a documented backup process. What’s far less common, however, is a well-documented process for restoring and recovering the critical databases. That part is…
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Cumulative Updates, CUs, are the way bug fixes and other improvements are released for SQL Server. These updates can make your SQL Servers more secure, they can fix performance issues, and they can make your system more reliable. But, as with any new code, they can sometimes introduce new issues. It’s not often that this…
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SQL Server hardware can be powerful. Lots of CPU cores and memory. Just what a crypto miner may need in their quest to generate cryptocurrency. In the case of the MrbMiner exploit, numerous SQL Servers have been exploited with brute-force attacks. These attacks are scanning for servers exposed directly to the internet and are using…
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In my last post, I wrote about a new option in Azure – shared disks. Have you ever needed to build a Failover Cluster Instance (FCI) in Azure? This post will provide a few steps to get you started. To follow along with the demo, you’ll need an Azure account (available for free here )…
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Azure offers a large array of options when it comes to high availability and disaster recovery. Failover clustered instances (FCIs) is a well known option, for SQL Server, that’s been available for years on premises. However, FCIs traditionally required shared storage. New versions of the Windows OS and SQL Server now support other options such…
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