Forecasting Azure Stack HCI Cache Wear

So you’ve set up an Azure Stack HCI Cluster and everything’s running great, but there is this nagging feeling in the back of your mind. It’s a hybrid setup, with some type of flash cache sitting in front of spinning disk, and you start to wonder how hard you’re pushing that cache, and how long Read More…

Best Practices for patching S2D and AzureStack HCI Clusters – Part 1

Overview While spending a lot of time on the Storage Spaces Direct Slack group, one thing that comes up again and again is patching of S2D Clusters, and what is the best way to do it. For this blog series, I’m going to break down the patching best practices into 2 separate scenarios: Offline Patching Read More…

Perform better Storage Spaces Direct maintenance with these Powershell functions

Storage Spaces Direct (S2D) is an incredibly powerful technology, and makes up a huge part of the new AzureStack HCI Solution, however performing maintenance on it can catch out new players. One of the biggest causes of failures while performing maintenance on S2D hosts and clusters, is that the hosts haven’t been correctly put into Read More…

Get a pretty view of your S2D Storage Pools

A simple function for viewing the capacity of your Storage Pools

Looking at the Write Cache in Storage Spaces Direct

Looking at the Write Cache in Storage Spaces Direct and how to see it’s usage in Windows Server 2016 vs 2019

You need to change the way you patch S2D Clusters

If you’re running a Storage Spaces Direct (S2D) Cluster, you might have noticed some instability in recent months,┬áspecifically when it comes to patching and performing maintenance. Well you’re in luck because 5 days ago, Microsoft released a new KB article that helps explain why you might have seen issues. The scenario targeted by the Microsoft Read More…

Using WS2016Lab to test Windows Server 2019

If you’ve been anywhere near Twitter or any Tech Blogs and News sites recently, you would have noticed that Microsoft have dropped their first cut of the next Long-Term Service Branch OS, Windows Server 2019, into the Windows Insider ring for people like you and me to start testing. Now most people (like me) don’t Read More…

Must Read Storage Spaces Direct Blog Posts

Hi all, Quite often the best information on new technology is actually found in blog posts and not actual documentation, and while the documentation for Storage Spaces Direct from Microsoft is great, some of the real gems are in the pre-GA blogs they put up. So below, I hope to keep up a list of Read More…

Bug when applying KB4038782 September CU to Storage Spaces Direct Clusters

UPDATE(2017-09-19): Microsoft have officially recognized the bug and have a KB describing the symptoms and workaround much like the below. See here: https://support.microsoft.com/en-us/help/4043361/disks-in-maintenance-mode-status-after-september-cumulative-update-kb I was patching our dev cluster the other day and came across a new issue when applying the latest September Cumulative Update (KB4038782), and it seems others on the internet have hit Read More…

S2D Storage Tiers misconfiguration bug

I’ve been deploying a few Storage Spaces Direct (S2D) clusters lately, and I noticed a slight mis-configuration that can occur on deployment. Normally when deploying S2D, the disk types in the nodes are detected and the fastest disk (usually NVMe or SSD) is assigned to the cache, while the next fastest is used for the Read More…