Hitachi Universal Volume Manager vs Synology Active Backup for SaaS

Hitachi Universal Volume Manager connects external block storage to a local storage system and maps its volumes for host access. Hosts can use those mapped volumes in the same way as volumes held in the local system. Documented uses include assigning external volumes to hosts, backup, and moving data from an older storage system. Connections use Fibre Channel; iSCSI is also available for VSP One Block. The guide identifies supported third-party systems and provides a generic Fibre Channel profile for systems that meet part of the standard SCSI Primary Commands set. Operations are available through the REST API, Storage Advisor Embedded, and CCI. Mapped volumes can be used with other storage products, including Dynamic Provisioning, TrueCopy, ShadowImage, and Universal Replicator. For VSP One Block, up to 4,096 external storage systems and eight mapping paths per external volume are supported. Each mapped external volume is limited to 256 TB; data above that capacity cannot be accessed. The feature requires a license on the local storage system, and pricing is on request.

Synology Active Backup for SaaS backs up Microsoft 365 and Google Workspace data to Synology NAS servers for recovery after data loss or service downtime. Microsoft 365 coverage includes OneDrive for Business, SharePoint Online, Exchange Online, and Teams. Google Workspace coverage includes Drive, Gmail, Contacts, and Calendar, including shared drives, labels, and attachments. Microsoft 365 backups can run continuously, manually, or on a schedule; continuous intervals adjust from one to ten minutes based on detected API request rates. Both services support file versioning, and Google Workspace versions can be retained for a chosen period or kept in full. The Microsoft 365 Recovery Portal lets administrators and employees restore or export backed-up data, with self-service access dependent on configuration. The product is a free add-on for a compatible Synology NAS, with unlimited accounts subject to NAS storage capacity. Active Backup for Microsoft 365 requires DSM 6.1-15217 or later. Deduplication requires an x64 NAS using Btrfs, and neither service supports secondary backups. Google Workspace setup requires configuring the Drive SDK API and creating a service key.