VMware Cloud on AWS – What’s New – January 2026

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I posted last month about what’s new in VMware Cloud on AWS, particularly as it related to the host usage API and changes to the VMC Sizer tool. It’s a new calendar year, but the team hasn’t stopped, delivering some new updates via a soon to be rolled out VMware Cloud on AWS software bundle. More detail can be found in the VMware Cloud on AWS Release Notes located here, and there’s a great blog post from the team here.

 

What’s New?

The default version for all new SDDC deployments is now 1.26, and it will be rolled out across the fleet in the next little while. A key component of this release is vSphere 8.0 Update 3. This a long-term support release of vSphere, and delivers improved performance and reliability. Notable, also, is the NSX version – in this update it goes to 4.2.3.1. I’ve linked to it before, but check out the timeless classic “Correlating VMware Cloud on AWS SDDC Versions With Their vSphere Components” for more information. So, an update is great, but what do you really get? Let’s dig in.

Support for vSAN Express Storage Architecture

This is the big one – support for vSAN Express Storage Architecture (ESA) is now generally available for VMware Cloud on AWS. Note that “vSAN ESA is supported only for i4i.metal host types on newly deployed single availability zone SDDCs and for new secondary i4i.metal clusters on existing SDDCs that have been upgraded to 1.26”. So, no brownfield support, but there’s still scope to do some pretty cool stuff.

New vSAN ESA features include:

  • Native snapshots for faster backups;
  • A storage pool architecture that reduces fault domains and improves data availability; and
  • For smaller customers, supports for a RAID-5 storage policy starting from 3 hosts gives customers more storage capacity on smaller clusters.

Bring Your Own Keys (BYOK): VMC Now Includes VM Encryption

VMware Cloud on AWS now supports customer-managed VM Encryption through an external KMIP-compliant Key Management Systems (KMS). What does that mean? You can now use your own keys for workload VM encryption – while the VMC control plane continues to use the AWS KMS (managed by Broadcom) for vSAN encryption.

VM Hardware Version 21

VM Hardware Version 21 is pretty cool, offering support for:

  • 256 Disks per VM – Massive storage capacity through 64 disks across 4 vNVMe adapters;
  • NVMe 1.3 – Enhanced performance for Windows 11 and Windows Server 2022 deployments.
  • NVMe for Windows Server Failover Clustering (WSFC) – High-performance shared storage for mission-critical clustered applications.
  • Latest Guest OS Support – Compatibility with RHEL 10, Oracle Linux 10, Debian 13, and FreeBSD 15.

The blog post has an excellent comparison of Version 20 and Version 21.

VMware Tools 12.5.4

VMware Tools 12.5.4 offers improved driver compatibility, enhanced VM performance, and provides better integration with the underlying VMC infrastructure.

 

Thoughts

Software updates aren’t always headlining news, but support for ESA on VMC (finally) is news that’s sure to make quite a few customers happy. I’ve no doubt they’re sick of hearing how cool it is from their on-premises counterparts and are keen to be part of the action. The updates to VMware Tools and VM Hardware version support are also minor, but important updates to the platform.