Release Notes

Here, at StarWind, we don’t have broken things. But perfection has no limits, which is why we continue to build upon our existing solutions and develop them to be up-to-date. We listen to customer feedback, conduct periodic tests, and follow trends in business and technology to keep delivering what hyperconvergence can offer best.

You can find the latest updates regarding the product of your interest below.

StarWind Virtual SAN (VSAN) for vSphere

StarWind VSAN for vSphere

OVF Version 20200515
Version 8 (build 13586)
18 May 2020

Synchronous Replication

  • Linux Kernel updated.
  • StarWind event log rotation updated. The log file size is now limited to 50MB and will be rotated in case the file size is more than 50MB. Logrotate works on an hourly basis.
  • Fixed the processing of the EXTENDED COPY(LID4) command. It was returning an error to the client on the previous build, thus making the client use non-VAAI commands.


  • Text file notification changed to open and close text file on each message instead of keeping the file open constantly.

E-mail Notifications

  • Introduced a minor fix for secured authentication on SMTP — compatibility issues with some servers.
OVF version 20200420
Version 8 (build 13569)
20 April 2020

Synchronous Replication

  • Full synchronization with CRC check, which was added in the previous release, is now used only for cases when underlying storage is MS Storage Spaces. Synchronization type (Full or Full hash) is shown in the Management Console. For generic storage types, the old algorithm with data copy without additional CRC check is used due to better performance.
  • Memory alignment fixed for data CRC request. Compatibility fix for VSA build.
  • Fixed the bug for the Node Majority configuration with two nodes and a Witness node. Data corruption may occur in the case when failure is caused only by the loss of the sync channel, and the failing node has the ability to process client requests at the moment when the loss of the sync channel is detected.


  • The number of files for log rotate is updated to the new value of 20 during the update of existing installations.

Flat Storage

  • Improved the processing of responses to UNMAP/TRIM commands from the underlying storage system for ReFS: functionality to suppress log error on failed Trim call for the error 312 (ERROR_NO_RANGES_PROCESSED) added.

E-mail Notifications

  • Fixed bug: sending e-mail notifications using the SMTP server without authentication was broken in the previous build.
OVF version 20191007
Version 8 (build 13170)
08 October 2019


  • Linux Kernel updated.
  • Fixed StarWind Events issue in Management Console, namely the invisibility of events after changing time in the OS.
  • Added support for iSCSI Header Digest and iSCSI Data Digest. These features provide CRC data control in iSCSI headers and PDUs, respectively, and can be enabled by setting corresponding options in iSCSI Initiator on the client.
  • Optimized performance when more than three sessions connect to the target.
  • Added log message for an error on session reinstantiation due to the stuck old session.
  • Fixed issue in cache deinitialization. In some cases, devices with disk cache could prevent normal service termination.

Synchronous Replication

  • Added option to change ALUA settings of an existing device.
  • Optimized processing of failover to minimize response time when a partner server has gone offline without proper shutdown. Please, see KB for more information.
  • Fixed processing of sync channel loss. The failover procedure involved the request of some extended status fields from the partner nodes, which could take long and exceed command processing timeout. This state could occur in some cases when running Windows Server 2019 and could lead to data loss.
  • Changed failover procedure to process sync channel loss without extended interaction with partners.

Management Console

  • Optimized UI performance.


  • CollectLogs script moved to the StarWind Service directory.

Update Option

  • Added an ability to update from the previous builds. The update procedure is described here.
OVF version 20190226
Version 8 (build 12859)
27 February 2019


  • Linux Kernel updated.
  • Automatic rescan script updated.
  • Fixed a network layer implementation with eliminating possible data transfer issues under a heavy workload.
  • Improved performance compared with previous builds.
  • Added an ability to update from the previous builds. The update procedure is described here.
  • Updating is strongly recommended for systems that are running on previous builds of StarWind VSAN for vSphere!
OVF version 20181210
Version 8 (build 12658)
13 December 2018


  • Linux Kernel update.
  • Fixed StarWindVSA.service startup output.
  • Fixed checking available underlying storage capacity during an HA device creation/extension.

Synchronous Replication

  • Fixed the issue with incorrect processing of storage hardware failures (introduced in build 12393). Before, in build 12393, disk storage failures on an HA node were sometimes left unprocessed. After the hardware issue was resolved and the HA node restarted, no correct full sync process was done, leading to the risk of data corruption. Updating is strongly recommended for systems running StarWind VSAN for vSphere V8 build 12393 and later!

StarWind Management Console

  • Added ACL and CHAP functionalities.
OVF version 24092018
Version 8 (build 12533)
24 September 2018


  • Linux Kernel update.
  • Added Linux Software RAID support.
  • Fixed StarWind service crashes when the size of L1 cache exceeds 3GB.
  • Fixed StarWind service crashes when the L2 cache is assigned.
  • Updated the automated storage rescan script.
  • StarWind Management console is not included in this build. Management is done through the dedicated console.
  • Fixed issues with space allocation on the underlying storage during a device extension.
  • Fixed issue with an empty header after resetting a VM.
  • StarWind accepts connections only from ESXi iSCSI Software Adapter.
  • Fixed StarWind Events format in Management Console.
  • Removed the "Mark as synchronized" option when HA device is in Maintenance mode.
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