Hyperion is the latest entry in our quarterly rollup series. It branches off from our main rolling Voyager development into a fixed target for our partners to qualify and build upon.

This Quarterly release is named after Saturn's moon Hyperion. Fun fact: Hyperion is potato shaped and its deeply cratered surface resembles a sponge. Hyperion rotates chaotically, tumbling unpredictably through space as it orbits Saturn.

As for the software, Comet 25.5.0 Hyperion brings 3 new features and 9 enhancements, including automatic Storage Vault unlocking, automatically switching jobs to use on-disk indexes, a new option to backup everything in a Microsoft 365 domain, and more.

As always for a new quarterly release, there are two changelogs for 25.5.0 depending on whether you are coming from the previous quarterly release or the previous Voyager release:

Changes compared to 25.2.4

Changes compared to 25.3.7

NOTE: The Impossible Cloud eu-central-1 region has been deprecated. Existing Storage Vaults and Storage Templates using this region will remain configured.

Changes compared to 25.3.6

New Features​

Automatically Switch Jobs To Use On-Disk Indexes​

Comet makes use of in-memory indexes to optimise backup and retention pass jobs to maintain a list of where the data is in the Storage Vault. For larger Storage Vaults, this can lead to a large amount of data held in memory. On devices that have a lower amount of RAM, this can cause a job to fail as there is not enough available memory to complete the job. Comet's solution is to store the indexes on-disk using temporary files instead. This is because devices can often have more free disk space than available RAM.

When a scheduled backup or retention pass requires more RAM than is available, Comet will now automatically switch to store the indexes using temporary files on disk.

Enhancements​

New Translations​

Comet 25.3.7 updates the translations for 13 languages. These are Danish, German, Spanish, French, Hebrew, Croatian, Italian, Dutch, Portuguese (Brazil), Portuguese (Europe), Russian, Polish and Thai.

Comet Backup Desktop App Windows Tray Icon "Show Interface" Changes​

When the policy setting "Prevent opening the application interface" is enabled, clicking the "Show Interface" button from the Comet Backup desktop app tray icon on Windows will now open the login dialog prompt.

This change allows another user to log into Comet Backup. Previously, this button had no action.

Changes compared to 25.2.3

Bug Fixes​

• Fixed an issue causing retention passes to crash if a snapshot references a pack that isn't present in the Storage Vault
• Fixed an issue with retention passes failing to run when backup job retries were enabled.

Changes compared to 25.3.5

New Features​

Bulk Cancel Jobs using Comet Management Console​

It is now possible to cancel running jobs in bulk from the Job Logs page on a Comet Management Console. This is an effective way to stop all currently running backup jobs with one click.

Changes compared to 25.2.2

Changes compared to 25.3.4

Changes compared to 25.3.3

Enhancements​

New option to back up everything in a Microsoft 365 domain​

In previous versions of Comet, the "Select all except..." option for Microsoft 365 Protected Items was provided as an alternative way to select accounts, allowing for the automatic inclusion of new accounts and potential exclusion of others. User feedback was that the behaviour of this option was unintuitive, and so we have elected to remove this option in favour of a more intuitive alternative.

In Comet 25.3.4, we are introducing the new "Back up everything" option for Microsoft 365 backups. This option provides a simple way to back up everything within a domain, including any accounts that are added later.

To back up everything with exceptions, users should instead create a group in Microsoft 365 and have the group auto-assign to new accounts. Users to be excluded can be removed from the group, and this group can then be selected in Comet.

Changes compared to 25.2.1

Enhancements​

VMware Protected Items configured using Changed Block Tracking can now fallback to a full backup​

VMware Protected Items that have been configured to use the Latest VM state (Changed Block Tracking) mode will now fallback to performing a full VM backup when Comet detects that more than 50% of the disk has changed. This speeds up the backup peformance when large parts of the VM has been modified.

Changes compared to 25.3.2

Enhancements​

Linux Disk Image snapshot driver now installs automatically​

Comet uses a custom Linux kernel driver backupsnap61 to snapshot a block device during a Linux Disk Image Protected Item backup.

In previous releases, backupsnap61 had to be installed manually using the backupsnap61-install.sh script found in the Comet Backup install directory.

Without backupsnap61 installed, Comet can't guarantee it can get exclusive read access to a block device. This will appear as a warning in a Linux Disk Image backup job log.

Now, backupsnap61 is installed automatically by Comet to ensure a snapshot driver is always available before starting a Linux Disk Image backup.