Cloudsfer vs Hitachi Universal Volume Manager

Cloudsfer provides cloud data migration, backup and synchronization across cloud and on-premise systems. Its migration service supports more than 20 cloud storage providers, with listed systems including Dropbox, Box, OneDrive, SharePoint Online, Egnyte, Amazon S3, Azure Blob, FTP and WebDAV. Transfer features include delta migration, filters, detailed reports and an on-premise agent. Backup can run automatically on daily, weekly or monthly schedules, including to a local environment. Synchronization transfers cloud and on-premise data on a configured schedule and moves only changes. Cloudsfer says communications are encrypted and it does not store user data or passwords; its migration page says transfers use TLS and data is not stored on its servers. The Free Tier costs nothing for 1GB. Essential costs $100 a month for 100GB, with $1.20 per GB overage and one parallel job. Professional costs $320 a month for 400GB, while Enterprise costs $780 a month for 1TB; both list separate overage rates and parallel-job limits.

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.