Hi Kayboo,
Symantec Availability products will generall include the following:
Note: I'm providing the Windows products, but these same products exist on the Unix side and if this is what you're after, please update the post and perhaps someone more familiar with the Unix side can provide links to the documentation. Aside from documentation differences, these same 3 products exist on the Unix platform as well and the descriptions of each product below apply:
Storage Foundation for Windows (SFW) or just Storage Foundation (SF) on the Unix side.
This provides Volume Management and is used to create and manage volumes. Here, you can create redundant volumes (mirroring, RAID5), create snapshots for point-in-time backups, etc...
Veritas Cluster Server (VCS):
This is generally used in conjunction with Storage Foundation (sold as Storage Foundation High Availability) and is the clustering component which allows you to cluster applications between 2 or more servers to provide High Availability. If an active server or application goes down, the resources can move to another node in the cluster and be back online within a matter of minutes.
Veritas Volume Replicator (VVR):
This is an available option within Storage Foundation which allows you to replicate your volumes from one server to another. This can be used in a standalone configuration where a stand-alone server is replicating to a single server. Many customers will use this feature in what is called a Global Cluster. This way, they may have a 2-node cluster in New York, and Disaster Recovery 2-node cluster in New Jersey. They can then use VVR to replicat between the Production and DR clusters and in the event of an entire site failure, the application(s) will be able to move to the New Jersey DR site minimizing downtime.
On the Windows side, in order to get all 3 products, you would download the SFW-HA 5.1 SP2 installation (which is the latest version) as this includes all 3 products and their available options.
If you are interested in more detailed informaiton, please respond and I'll do my best to answer. Also, I'd recommend checking out the available documentation on the High Availability products:
SFW 5.1 Administrator's Guide:
http://www.symantec.com/business/support/index?page=content&id=DOC3327&cat=ADMINISTRATION_GUIDE&key=...
VCS 5.1 Administrator's Guide:
http://www.symantec.com/business/support/index?page=content&id=DOC3296&cat=ADMINISTRATION_GUIDE&key=...
VVR 5.1 Administrator's Guide:
http://www.symantec.com/business/support/index?page=content&id=DOC3327&cat=ADMINISTRATION_GUIDE&key=...
I hope this helps,
rjhanley
