When you create storage spaces, plan ahead, and give yourself room to fine-tune the storage spaces after you observe your workloads in action. Leave room for tuning when you create storage spaces However, you might occasionally need to adjust the storage tiers configuration to get the performance you want for a specific workload. This typically delivers very efficient storage management with little or no intervention on your part. So if only 30 percent of the data on a virtual hard disk is "hot," only that 30 percent moves to your solid-state drives.Ī write-back cache backed by SSDs minimizes the impact of random writes-In addition, a 1 GB write-back cache backed by SSDs reduces the latency of random writes, which increases the overall throughput performance of the storage. Optimization moves data, not files-The data is mapped and moved at a sub-file level. (1)ĭuring its nightly run (at 1:00 a.m., by default), the Storage Tiers Optimization task moves the most frequently accessed ("hot") data to your faster solid-state drives (the SSD tier) and the "cooler" data to the less expensive hard disk drives (the HDD tier). Over the course of the day, Storage Spaces creates a heat map of the data based on how often each piece of data is accessed. Storage tiers optimization is a two-part process, as shown below:
WINDOWS SERVER 2012 PROCESS MONITOR WINDOWS
If you're using tiered storage spaces in Windows Server 2012 R2, Windows is automatically optimizing your storage performance by transparently moving the data that's accessed most frequently to your faster solid-state drives (the SSD tier) and switching out less active data to your less expensive hard disk drives (the HDD tier). Use performance counters to monitor storage tiers When should I consider pinning files to a storage tier? Is the SSD tier capacity sufficient for my workload?Īre storage tiers being optimized frequently enough for the workload? Save a report when Storage Tiers Optimization runs Use performance counters for the Tier object to gather additional data about Reads and Writes to the tiers. To make sure your storage tiers are optimizing performance of your storage spaces efficiently in Windows Server 2012 R2, you should evaluate the performance of your storage configuration after a few days, when your workloads have run long enough to become established and predictable, and then check a few simple data points each week in a Storage Tier Optimization Report to make sure the storage tiers are performing optimally.
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