https://community.checkpoint.com/t5/Firewall-and-Security-Management/Upgrade-to-R81-20-from-R81-10-VSX-Environment-is-VSLS-required/m-p/275979#M105090 <P>We are upgrading our VSX environment from R81.10 to R81.20&nbsp;</P><P>&nbsp;<A href="https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_RN/CP_R81.20_ReleaseNotes.pdf" target="_blank">https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_RN/CP_R81.20_ReleaseNotes.pdf</A>&nbsp;page 40</P><P>In the release notes it states the following:</P><P><EM><STRONG>1. Starting from R81.10, VSLS is the only supported mode for new installations of VSX Clusters.</STRONG></EM><BR /><EM><STRONG>Upgrade of a VSX Cluster in the High Availability mode from R81.10 and earlier versions to R81.20 is supported'</STRONG></EM></P><P>Is VSLS required for this upgrade? Or can we continue to run HA mode.</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 23 Apr 2026 08:20:00 GMT Networks_Team_B 2026-04-23T08:20:00Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/Upgrade-to-R81-20-from-R81-10-VSX-Environment-is-VSLS-required/m-p/275979#M105090 <P>We are upgrading our VSX environment from R81.10 to R81.20&nbsp;</P><P>&nbsp;<A href="https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_RN/CP_R81.20_ReleaseNotes.pdf" target="_blank">https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_RN/CP_R81.20_ReleaseNotes.pdf</A>&nbsp;page 40</P><P>In the release notes it states the following:</P><P><EM><STRONG>1. Starting from R81.10, VSLS is the only supported mode for new installations of VSX Clusters.</STRONG></EM><BR /><EM><STRONG>Upgrade of a VSX Cluster in the High Availability mode from R81.10 and earlier versions to R81.20 is supported'</STRONG></EM></P><P>Is VSLS required for this upgrade? Or can we continue to run HA mode.</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 23 Apr 2026 08:20:00 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/Upgrade-to-R81-20-from-R81-10-VSX-Environment-is-VSLS-required/m-p/275979#M105090 Networks_Team_B 2026-04-23T08:20:00Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/Upgrade-to-R81-20-from-R81-10-VSX-Environment-is-VSLS-required/m-p/275981#M105091 <P>HA mode will be retained through the upgrade process. There is no requirement to change it to VSLS.</P> Thu, 23 Apr 2026 08:23:05 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/Upgrade-to-R81-20-from-R81-10-VSX-Environment-is-VSLS-required/m-p/275981#M105091 emmap 2026-04-23T08:23:05Z