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Storage Tiers allow for use of SSD and hard drive storage within the same storage pool as a new feature in Windows Server 2012 R2. If you’ve not read Jose Barreto’s Step-by-step post on this subject already, it is a great source for links about Storage Tiers as well as a fantastic place to find examples of how to use PowerShell cmdlets to implement Storage Tiers with Storage Spaces. In this episode, we are going to show you how to implement Storage Tiers using mostly the UI.
If you’re not familiar with Storage Tiers, the idea is to be able to mix Solid State Disk (SSD) storage with conventional disks (HDD). However, Storage Tiers provides the ability to store more frequently accessed data on SSD media...with both types of media used as block based storage for the same virtual disk: the best of both types of storage. That’s a pretty high level summary…and a pretty awesome concept. Previously, in our basement lab I had two different pools: one for each type of storage.
If implementing tiers using PowerShell, some calculations may be required…and it looks a bit complicated if you’re just attempting to try out. Granted, below are quite a few screen shots and this is a lengthy post. However, the process using the UI is fairly easy. We made one diversion into PowerShell to show how to define MediaTypes for storage devices if they’re not detected automatically. The technique we use for that is very similar to Jose’s example but is another variation to show that you’re not limited to just one technique.
If you’ve read our recent post about expanding a storage pool , you may have a better understanding of how Storage Spaces uses columns. Using the UI to configure Storage Tiers will attempt to use the defaults for the number of columns. Using some quick and easy PowerShell during the creation process, you may change the column defaults for a specific storage pool.