How ALTO solutions work?
ALTO has a unique architecture designed specifically to securely store large volumes of infrequently accessed storage. ALTO provides you with with the best of both worlds - the security of a physical removable media and the multi-user access and fast content restore of non-linear disk storage. How does it do this? On this page we provide a brief overview of the fundamental replication approach executed by ALTO.
ALTO-III can be fine-tuned for maximum storage efficiency by establishing Replication Rules based on the following principles
Replication factor 1 is most frequently used for Backup purposes, which by definition means there is a second copy of each file on another storage system. Using Replication Factor 1 offers the most cost effective storage solution for Incremental Backups
Replication factor 2 is the default replication for an Archive. Two copies of every file are created and stored on different Disks for protection. The two disks may be in the same chassis in a single chassis system or different chassis for additional resilience. Since ALTO uses Replication NOT mirroring, the two Replicas may be in geographically separated locations.
Replication factor 3 is typically used to create a Disaster Recovery Archive in a different building or in a different Geographical area. Increasingly Customers are taking advantage of this unique ALTO Capability to create a simple physical Shelf Archive as a copy of last resort