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4-1
CHAPTER
4
StorEdge File Replicator
This chapter provides an overview of the StorEdge File Replicator.
4.1 Overview
The Sun StorEdge 5310 NAS data appliances provide fault-tolerant features such as
redundant hardware devices, extensive monitoring and notification of both software
and hardware components, checkpointing and controller and server Failover.
StorEdge File Replicator extends these capabilities to include mirroring. This section
provides an overview of the StorEdge File Replicator feature.
A discussion of the different types of mirroring is necessary to lay the groundwork
for a discussion of the StorEdge File Replicator mirroring implementation. Mirroring
implementations can be loosely categorized into 3 buckets:
■ Checkpoint (or Snapshot) Mirroring
■ Real-time (or Synchronous) Mirroring
■ Pseudo Real-time (or Asynchronous) Mirroring
Throughout this document, some standard terms are used and are defined as
follows: