Here is my backgroud
* 4 Windows servers installed in SAN
* 4 are attached with SAN switch via FC interface
* 2 TS3200 autochanger loader attached SAN switch
If I want to buy "one" networker for backup host, and 3 clients. How can i let all client backup their data from SAN to backup devices, instead of via LAN?
As, I still not understand about "Storage Nodes" and "Dyanmic Shared Drive"
There are 3 types of host in a Networker system; the Networker server controls the backups and stores tracking data as to what has been backed up; the Networker storage node is the part of Networker that moves data to backup media (the Networker server is also a storage node but you may have additional storage nodes to remove load from the backup server); lastly the Networker client is the software installed on the hosts you are backing up which communicates with the backup server and sends backup data to the storage node (the client will also be installed on the server and the storage node).
A storage node will accept backup data from other clients and send them to backup devices which are attached to it. However the license cost for a storage node is quite expensive. There is however another option, there is a lower cost license called the dedicated storage node which will only backup the client on which it is installed; since your hosts have connectivity to your autochanger this may be the option for you.
Presumably your autochanger is a physical tape library rather than a virtual tape library. You will have a number of tape devices in the autochanger; without any additional licenses you can dedicate tape devices to a particular host but that tape device will not be usable by other hosts; since a tape device is quite an expensive resource it is usually more cost effective to share the devices between (dedicated) storage nodes - to do this you need to purchase the dynamic drive sharing license.
I agree with David. You'll need one Dynamic Drive Sharing license for each tape drive. Also, one Dedicated Storage Node for each client (backup server has the ability itself). If you have databases or mail servers at these clients, you'll need to purchase additional licenses to backup these apps online. Could you explain if that is your scenario?
I guess the thing I noticed immediately about this is it seemed quite an unusual environment - 4 clients on a SAN with two jukeboxes (one which is implied will be the backup server); surely something is being missed here?
thanks so much, I understand more in Networker product now.
I captured my server license information for our discussion. we have DDS License and DSN Licnese but seem not activated. Any setting I missed?
You have none used, probably because you have not configured the drives yet. Are you installing this yourself or did you have EMC or an EMC partner carry out the work for you?
Do you have a copy of your design? Did EMC approve it or did they just sell you the licenses you asked for? How have you gone about configuring your drives, do you know how to set up DDS?
We have 4 servers and one of them installed Legato client + server, which control two tape libraries.
4 servers data are located in SAN Storage, and all of those devices are attached in same Fibre Switch.
Besides, I have no idea to install DSS, any recommended document i can take a look?
I don't see any mention of Storage Nodes in your diagram. Which hosts are Storage Nodes? Either way, here's some documentation that should help you:
NetWorker 7.6 Administration Guide page 104 - 'Dynamic Drive Sharing'