Storage optimized

The Ls-series is optimized for workloads that require low latency local storage, like NoSQL databases (for example, Cassandra, MongoDB, Cloudera, and Redis). The Ls-series offers up to 32 CPU cores, using the Intel® Xeon® processor E5 v3 family. This is the same CPU performance as the G/GS-Series and comes with 8 GiB of memory per CPU core.


ACU: 180-240

Size CPU cores Memory: GiB Local SSD: GiB Max data disks Max cached and local disk throughput: IOPS / MBps (cache size in GiB) Max uncached disk throughput: IOPS / MBps Max NICs / Network bandwidth
Standard_L4s 4 32 678 8 NA / NA (0) 5,000 / 125 2 / high
Standard_L8s 8 64 1,388 16 NA / NA (0) 10,000 / 250 4 / very high
Standard_L16s 16 128 2,807 32 NA / NA (0) 20,000 / 500 8 / extremely high
Standard_L32s** 32 256 5,630 64 NA / NA (0) 40,000 / 1,000 8 / extremely high

MBps = 10^6 bytes per second, and GiB = 1024^3 bytes.

*The maximum disk throughput (IOPS or MBps) possible with a Ls-series VM may be limited by the number, size, and striping of the attached disk(s). For details, see Premium Storage: High-performance storage for Azure virtual machine workloads.

**Instance is isolated to hardware dedicated to a single customer.

Size table definitions

  • Storage capacity is shown in units of GiB or 1024^3 bytes. When comparing disks measured in GB (1000^3 bytes) to disks measured in GiB (1024^3) remember that capacity numbers given in GiB may appear smaller. For example, 1023 GiB = 1098.4 GB
  • Disk throughput is measured in input/output operations per second (IOPS) and MBps where MBps = 10^6 bytes/sec.
  • Data disks can operate in cached or uncached modes. For cached data disk operation, the host cache mode is set to ReadOnly or ReadWrite. For uncached data disk operation, the host cache mode is set to None.
  • Maximum network bandwidth is the maximum aggregated bandwidth allocated and assigned per VM type. The maximum bandwidth provides guidance for selecting the right VM type to ensure adequate network capacity is available. When moving between Low, Moderate, High and Very High, the throughput will increase accordingly. Actual network performance will depend on many factors including network and application loads, and application network settings.

Other sizes

Next steps

Learn more about how Azure compute units (ACU) can help you compare compute performance across Azure SKUs.