25.3.8 Voyager released
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 25.3.7
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
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.
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.
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 25.3.4
Changes compared to 25.3.3
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 25.3.2
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.
Changes compared to 25.3.1
Creating the Linux recovery environment ISO using Comet Backup on a Linux endpoint can now be done without requiring Docker to be installed. This simplifies the install requirements to build the Linux recovery environment and also reduces how long it takes to build the recovery environment.
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 25.2.0
As part of our efforts to improve the experience of using Comet, in Comet 25.3.0 we have added functionality to automatically change Storage Vault access keys for some of our supported storage providers, allowing admins to manually unlock compatible Storage Vaults without the risk of data loss.
Vaults can also be automatically unlocked when specified criteria, configured in user policy settings, have been met.
The following Storage Vault types are currently supported:

Comet 25.3.0 adds support for setting yearly schedules and retention rules - great for long term storage, archival, and compliance requirements.


Changes compared to 24.12.5
As part of our efforts to improve the usability of Comet, all Comet Server Roles have been renamed.
These changes better reflect the capabilities of each role making it easier for new and existing customers to understand what each role does.
As part of this change, the Comet Server Service Manager (CSSM) has been renamed to the Comet Core Service Manager (CCSM).
The Comet Server web interface has also been update to reflect this changes, grouping the related side menu pages and settings under each of the new names.


Self-Hosted Comet Management Console Only
Storage Templates are Comet's recommended way to configure and deploy Storage Vaults for your backup infrastructure. Findng the Storage Templates settings on a Self-Hosted Management Console has been made significantly easier.
In older versions of Comet, the Storage Template settings were found as part of the Management Console (previously Auth Role) settings. This has now been moved to its own settings section which is a lot easier to find.
