Efficient Replication using Multicast Protocols
Replication as Data Protection
The use of replication as a data protection method is not new. Historically, it was relegated to disaster recovery for tier-1 applications and did not have a role in day-to-day backups.
Recently, however, many customers are using replication as their primary mechanism for backup and recovery for all tiers of systems – primarily due to the advent of object storage systems with built in replication and versioning. Unfortunately, the side effect is that this significantly increases the amount of data that needs to be replicated.
If one is to rely on replication as the primary method of data protection, one must replicate each version of every object to multiple nodes. Many systems transmit the entire object when it changes, then replicate the object multiple times if they are replicating it to multiple destinations. This exacerbates the issue by requiring even more bandwidth.
There is another way to protect your data…
Read the entire article here, Efficient Replication using Multicast Protocols
via the fine folks at Nexenta