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Guides

Hands-on Parallels RAS guides from the field: architecture, configuration, upgrades and lab-tested procedures.

Parallels RAS : mise a jour de la version 21 vers la 22
November 11, 2026

Upgrading Parallels RAS 21 to 22 on a multi-component farm

The console’s Check for Updates button is handy in a lab, but on a distributed farm it updates components in an order you don’t control — and that’s where the nasty surprises come from. Here is the manual, ordered procedure I use in production to move from v21 to v22, validated in the lab beforehand. … Read more

Inside HALB - Parallels RAS
November 11, 2026

Inside HALB: no, you can’t just waltz in

Everyone deploys one, nobody has ever opened it up. The HALB — High Availability Load Balancing — is that appliance you drop in front of the Secure Gateways, configure in two screens, and forget. I wanted to know what was inside, and above all to answer a question every architect asks: is it a fragile … Read more