Gartner Research

Comparing Public Cloud Block Storage From Amazon, Google and Microsoft

Published: 19 January 2017

ID: G00308192

Analyst(s): Angelina Troy


Default storage options are not necessarily the best when creating public cloud IaaS compute instances. Technical professionals can use this document to identify which block storage options from Amazon Web Services, Google Cloud Platform and Microsoft Azure are appropriate for their use cases.

Table Of Contents



  • Amazon Web Services
    • General Purpose SSD (gp2)
    • Provisioned IOPS SSD (io1)
    • Throughput Optimized HDD (st1)
    • Cold HDD (sc1)
    • EC2 Local SSD
    • EC2 Local HDD
  • Google Cloud Platform
    • Persistent Disk SSD
    • Persistent Disk HDD
    • Local SSD
  • Microsoft Azure
    • Premium Disk
    • Standard Disk
    • Local SSD
    • Local HDD


  • Balance Compute and Storage
  • Refer to Vendor Documentation to Avoid Sizing Problems
  • Use Persistent HDD Storage Where It Makes Sense

The Details

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