-[DSv2-series](../sizes-general.md#dsv2-series) VMs support premium storage, which is recommended for the best performance. The sizes recommended here are baselines, but the actual machine size you select depends on your workload demands. DSv2-series VMs are general-purpose VMs that are good for a variety of workloads, whereas other machines sizes are optimized for specific workload types. For example, the [M-series](../sizes-memory.md#m-series) offers the highest vCPU count and memory for the largest SQL Server workloads. The [GS-series](../sizes-older.md#gs-series) and [DSv2-series 11-15](../sizes-memory.md#dsv2-series-11-15) are optimized for large memory requirements. Both of those series are also available in [constrained core sizes](../../windows/constrained-vcpu.md), which saves money for workloads with lower compute demands. The [Ls-series](../sizes-storage.md) machines are optimized for high disk throughput and IO. It is important to consider your specific SQL Server workload and apply this to your selection of a VM series and size.
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